Fixed issue where physically insignificant part mass was not being correctly cascaded down through parent parts.
Fixed issue where physically insignificant part mass was not being correctly cascaded down through parent parts.

--- a/Documents/CHANGES.txt
+++ b/Documents/CHANGES.txt
@@ -1,3 +1,50 @@
+1.0.18.0
+    Added: Orbital readouts - "Speed at Periapsis" and "Speed at Apoapsis". (Padishar)
+    Added: Manoeuvre readouts - "Post-burn Apoapsis" and "Post-burn Periapsis". (Padishar)
+    Fixed: Synched the minimum simulation time sliders and stopped them from snapping back after 999ms. (saybur)
+    Fixed: Added workaround for the bug in Vessel.horizontalSrfSpeed (Padishar)
+    Fixed: Physically insignificant part masses were not correctly being cascaded down through its parents.
+
+1.0.17.0
+    Added: 'Mach Number' readout under the 'Surface' category and included it on the default surface HUD.
+    Added: Stock sections in the Flight Engineer can now become HUDs.
+    Added 'Thermal' readouts category including:
+        Internal Flux
+        Convection Flux
+        Radiation Flux
+        Critical Part Name
+        Critical Part Temperature
+        Critical Part Skin Temperature
+        Critical Part Thermal Percentage of Max Temperature
+        Hottest Part Name
+        Hottest Part Temperature
+        Hottest Part Skin Temperature
+        Coldest Part Name
+        Coldest Part Temperature
+        Coldest Part Skin Temperature
+
+    Changed: Mach on the Build Engineer now accurate to 2 decimal places.
+    Changed: Max mach in the Build Engineer defaults to 1.00 even when no jet engines are present.
+    Changed: Increased eccentricity readout to 5 decimal places.
+    Changed: Implemented Sarbian's object pooling.
+    Changed: The default selected body is now assigned via 'Planitarium.Home'.
+    Changed: HUDs to clamp fully inside the screen instead of allowing them to run off the edge by a certain amount.
+    Fixed: Physically insignificant part mass is now associated with the parent part.
+    Fixed: Longitude and Latitude readouts now use a KER formatter instead of Squad's incorrect implementation.
+    Fixed: Possible null reference in the Rendezvous Processor.
+    Fixed: Fairing mass issues introduced with regards to simulation changes.
+    Fixed: Use of per-propellant fuel flow mode override.
+    Fixed: Burn times calculated for jet engines.
+    Fixed: Thrust issues introduced with Sarbian's simulation alterations.
+    Fixed: Issue where HUDs positioned close to the top/bottom of the screen could be pushed out of position.
+
+1.0.16.6, 02-05-15
+    Fixed: Separately staged fairing mass jettisons are now calculated in the editor.
+
+1.0.16.5, 02-05-2015
+    Fixed: Delta-V not being correctly calculated.
+    Changed: Editor locking now uses the InputLockManager.
+
 1.0.16.4, 01-05-2015
     Fixed: Physically insignificant part mass is now accounted for.
     Changed: Module mass accounted for as it now makes its way onto the launch pad (e.g. fairings).
@@ -33,7 +80,7 @@
 
 1.0.15.1, 13-02-2015
     Rebuild
-    
+
 1.0.15.0, 08-02-2015
     Padishar's Fixes:
         Added: Support KIDS ISP thrust correction.
@@ -43,7 +90,7 @@
 
 1.0.14.1, 28-12-2014
     Fixed: Missing texture on the ER-7500 model.
-    
+
 1.0.14.0, 28-12-2014
     Added: Career mode that limits the Flight Engineer by:
         - Requiring an Engineer Kerbal of any level, or placement of an Engineer Chip or ER-7500 part.
@@ -163,7 +210,7 @@
     Added: New readout to the surface category:
         - Vertical Acceleration
         - Horizontal Acceleration
-    
+
     Changed: Atmospheric efficiency readout now shows as a percentage.
     Changed: Atmospheric settings (pressure/velocity) in the editor condensed onto a single line.
     Fixed: Bug where the overlays in the editor would stay open outside of parts screen.
@@ -320,6 +367,7 @@
     Added: Stock toolbar support in the Flight Engineer.
     Changed: Orbital Period has higher precision.
     Fixed: Various NullRefs in editor window and overlay.
-    
+
 1.0.0.0, 24-07-2014
     Initial release for public testing.
+

--- a/KerbalEngineer/CelestialBodies.cs
+++ b/KerbalEngineer/CelestialBodies.cs
@@ -37,7 +37,8 @@
             try
             {
                 SystemBody = new BodyInfo(PSystemManager.Instance.localBodies.Find(b => b.referenceBody == null || b.referenceBody == b));
-                if (!SetSelectedBody("Kerbin"))
+                String homeCBName = Planetarium.fetch.Home.bodyName;
+                if (!SetSelectedBody(homeCBName))
                 {
                     SelectedBody = SystemBody;
                     SelectedBody.SetSelected(true);

--- a/KerbalEngineer/Control/ControlCentre.cs
+++ b/KerbalEngineer/Control/ControlCentre.cs
@@ -142,7 +142,7 @@
             try
             {
                 GUI.skin = null;
-                this.position = GUILayout.Window(this.GetInstanceID(), this.position, this.Window, "KERBAL ENGINEER REDUX " + EngineerGlobals.AssemblyVersion + " - CONTROL CENTRE", HighLogic.Skin.window);
+                this.position = GUILayout.Window(this.GetInstanceID(), this.position, this.Window, "KERBAL ENGINEER REDUX " + EngineerGlobals.ASSEMBLY_VERSION + " - CONTROL CENTRE", HighLogic.Skin.window);
                 this.CentreWindow();
             }
             catch (Exception ex)

--- a/KerbalEngineer/Editor/BuildAdvanced.cs
+++ b/KerbalEngineer/Editor/BuildAdvanced.cs
@@ -215,7 +215,7 @@
                 }
 
                 // Change the window title based on whether in compact mode or not.
-                title = !compactMode ? "KERBAL ENGINEER REDUX " + EngineerGlobals.AssemblyVersion : "K.E.R. " + EngineerGlobals.AssemblyVersion + (showAtmosphericDetails ? " (ATMOS.)" : String.Empty);
+                title = !compactMode ? "KERBAL ENGINEER REDUX " + EngineerGlobals.ASSEMBLY_VERSION : "K.E.R. " + EngineerGlobals.ASSEMBLY_VERSION;
 
                 // Reset the window size when the staging or something else has changed.
                 stagesLength = stages.Length;
@@ -354,7 +354,7 @@
                 GUILayout.Space(5.0f);
 
                 GUILayout.BeginVertical();
-                GUILayout.Label("Mach: " + atmosphericMach.ToString("F1"), settingAtmoStyle, GUILayout.Width(125.0f * GuiDisplaySize.Offset));
+                GUILayout.Label("Mach: " + atmosphericMach.ToString("F2"), settingAtmoStyle, GUILayout.Width(125.0f * GuiDisplaySize.Offset));
                 GUI.skin = HighLogic.Skin;
                 atmosphericMach = GUILayout.HorizontalSlider(Mathf.Clamp(atmosphericMach, 0.0f, maxMach), 0.0f, maxMach);
                 GUI.skin = null;
@@ -523,8 +523,13 @@
             GUILayout.EndHorizontal();
 
             GUILayout.BeginHorizontal();
-            GUILayout.Label("Simulate using vectored thrust values:");
+            GUILayout.Label("Simulate using vectored thrust values:", settingStyle);
             SimManager.vectoredThrust = GUILayout.Toggle(SimManager.vectoredThrust, "ENABLED", buttonStyle, GUILayout.Width(100.0f * GuiDisplaySize.Offset));
+            GUILayout.EndHorizontal();
+
+            GUILayout.BeginHorizontal();
+            GUILayout.Label("Verbose Simulation Log:", settingStyle);
+            SimManager.logOutput = GUILayout.Toggle(SimManager.logOutput, "ENABLED", buttonStyle, GUILayout.Width(100.0f * GuiDisplaySize.Offset));
             GUILayout.EndHorizontal();
 
             GUILayout.BeginHorizontal();
@@ -558,9 +563,9 @@
             }
             GUILayout.EndHorizontal();
 
-            GUILayout.Label("Minimum delay between simulations: " + SimManager.minSimTime.Milliseconds + "ms", settingStyle);
+            GUILayout.Label("Minimum delay between simulations: " + SimManager.minSimTime.TotalMilliseconds + "ms", settingStyle);
             GUI.skin = HighLogic.Skin;
-            SimManager.minSimTime = new TimeSpan(0, 0, 0, 0, (int)GUILayout.HorizontalSlider(SimManager.minSimTime.Milliseconds, 0, 2000.0f));
+            SimManager.minSimTime = TimeSpan.FromMilliseconds(GUILayout.HorizontalSlider((float)SimManager.minSimTime.TotalMilliseconds, 0, 2000.0f));
             GUI.skin = null;
         }
 
@@ -823,6 +828,14 @@
                     bodiesListPosition = new Rect(position.width - 452.0f * GuiDisplaySize.Offset, 5.0f, 125.0f * GuiDisplaySize.Offset, 20.0f);
                     bodiesList.enabled = GUI.Toggle(bodiesListPosition, bodiesList.enabled, "BODY: " + CelestialBodies.SelectedBody.Name.ToUpper(), buttonStyle);
                     bodiesList.SetPosition(bodiesListPosition.Translate(position));
+                }
+                else
+                {
+                    if (GUI.Toggle(new Rect(position.width - 133.0f * GuiDisplaySize.Offset, 5.0f, 60.0f * GuiDisplaySize.Offset, 20.0f), showAtmosphericDetails, "ATMO", buttonStyle) != showAtmosphericDetails)
+                    {
+                        hasChanged = true;
+                        showAtmosphericDetails = !showAtmosphericDetails;
+                    }
                 }
 
                 // Draw the main informational display box.
@@ -841,7 +854,7 @@
                     DrawBurnTime();
                     GUILayout.EndHorizontal();
 
-                    if (showAtmosphericDetails)
+                    if (showAtmosphericDetails && !compactMode)
                     {
                         GUILayout.BeginVertical(areaSettingStyle);
                         DrawAtmosphericDetails();

--- a/KerbalEngineer/Editor/PartInfoItem.cs
+++ b/KerbalEngineer/Editor/PartInfoItem.cs
@@ -19,38 +19,69 @@
 
 namespace KerbalEngineer.Editor
 {
+    using System.Collections.Generic;
     using VesselSimulator;
 
-    public class PartInfoItem : Pool<PartInfoItem>
+    public class PartInfoItem
     {
+        private static readonly Pool<PartInfoItem> pool = new Pool<PartInfoItem>(Create, Reset);
+
         public string Name { get; set; }
 
         public string Value { get; set; }
 
+        private static PartInfoItem Create()
+        {
+            return new PartInfoItem();
+        }
+
+        public void Release()
+        {
+            pool.Release(this);
+        }
+
+        public static void Release(List<PartInfoItem> objList)
+        {
+            for (int i = 0; i < objList.Count; ++i)
+            {
+                objList[i].Release();
+            }
+        }
+
+        private static void Reset(PartInfoItem obj)
+        {
+            obj.Name = string.Empty;
+            obj.Value = string.Empty;
+        }
+
         public static PartInfoItem Create(string name)
         {
-            return GetPoolObject().Initialise(name);
+            return New(name);
         }
 
         public static PartInfoItem Create(string name, string value)
         {
-            return GetPoolObject().Initialise(name, value);
+            return New(name, value);
         }
 
-        public PartInfoItem Initialise(string name)
+        public static PartInfoItem New(string name)
         {
-            Name = name;
-            Value = string.Empty;
+            PartInfoItem obj = pool.Borrow();
+            
+            obj.Name = name;
+            obj.Value = string.Empty;
 
-            return this;
+            return obj;
         }
 
-        public PartInfoItem Initialise(string name, string value)
+        public static PartInfoItem New(string name, string value)
         {
-            Name = name;
-            Value = value;
+            PartInfoItem obj = pool.Borrow();
 
-            return this;
+            obj.Name = name;
+            obj.Value = value;
+
+            return obj;
         }
     }
 }

--- a/KerbalEngineer/EngineerGlobals.cs
+++ b/KerbalEngineer/EngineerGlobals.cs
@@ -1,7 +1,5 @@
 // 
-//     Kerbal Engineer Redux
-// 
-//     Copyright (C) 2014 CYBUTEK
+//     Copyright (C) 2015 CYBUTEK
 // 
 //     This program is free software: you can redistribute it and/or modify
 //     it under the terms of the GNU General Public License as published by
@@ -17,42 +15,31 @@
 //     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // 
 
-#region Using Directives
-
-using System.IO;
-using System.Reflection;
-
-#endregion
-
 namespace KerbalEngineer
 {
-    public class EngineerGlobals
+    using System.IO;
+    using System.Reflection;
+
+    public static class EngineerGlobals
     {
-        #region Constants
-
         /// <summary>
         ///     Current version of the Kerbal Engineer assembly.
         /// </summary>
-        public const string AssemblyVersion = "1.0.16.4";
-
-        #endregion
-
-        #region Fields
+        public const string ASSEMBLY_VERSION = "1.0.18.0";
 
         private static string assemblyFile;
         private static string assemblyName;
         private static string assemblyPath;
-
-        #endregion
-
-        #region Properties
 
         /// <summary>
         ///     Gets the Kerbal Engineer assembly's path including the file name.
         /// </summary>
         public static string AssemblyFile
         {
-            get { return assemblyFile ?? (assemblyFile = Assembly.GetExecutingAssembly().Location); }
+            get
+            {
+                return assemblyFile ?? (assemblyFile = Assembly.GetExecutingAssembly().Location);
+            }
         }
 
         /// <summary>
@@ -60,7 +47,10 @@
         /// </summary>
         public static string AssemblyName
         {
-            get { return assemblyName ?? (assemblyName = new FileInfo(AssemblyFile).Name); }
+            get
+            {
+                return assemblyName ?? (assemblyName = new FileInfo(AssemblyFile).Name);
+            }
         }
 
         /// <summary>
@@ -68,9 +58,10 @@
         /// </summary>
         public static string AssemblyPath
         {
-            get { return assemblyPath ?? (assemblyPath = AssemblyFile.Replace(new FileInfo(AssemblyFile).Name, "")); }
+            get
+            {
+                return assemblyPath ?? (assemblyPath = AssemblyFile.Replace(new FileInfo(AssemblyFile).Name, ""));
+            }
         }
-
-        #endregion
     }
 }

--- a/KerbalEngineer/Extensions/DoubleExtensions.cs
+++ b/KerbalEngineer/Extensions/DoubleExtensions.cs
@@ -1,7 +1,7 @@
 // 
 //     Kerbal Engineer Redux
 // 
-//     Copyright (C) 2014 CYBUTEK
+//     Copyright (C) 2015 CYBUTEK
 // 
 //     This program is free software: you can redistribute it and/or modify
 //     it under the terms of the GNU General Public License as published by
@@ -17,18 +17,12 @@
 //     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // 
 
-#region Using Directives
-
-using KerbalEngineer.Helpers;
-
-#endregion
-
 namespace KerbalEngineer.Extensions
 {
+    using Helpers;
+
     public static class DoubleExtensions
     {
-        #region Methods: public
-
         public static double Clamp(this double value, double lower, double higher)
         {
             return value < lower ? lower : value > higher ? higher : value;
@@ -49,14 +43,19 @@
             return Units.ToDistance(value);
         }
 
-        public static string ToTorque(this double value)
+        public static string ToFlux(this double value)
         {
-            return Units.ToTorque(value);
+            return Units.ToFlux(value);
         }
 
         public static string ToForce(this double value)
         {
             return Units.ToForce(value);
+        }
+
+        public static string ToMach(this double value)
+        {
+            return Units.ToMach(value);
         }
 
         public static string ToMass(this double value)
@@ -79,6 +78,14 @@
             return Units.ToSpeed(value);
         }
 
-        #endregion
+        public static string ToTemperature(this double value)
+        {
+            return Units.ToTemperature(value);
+        }
+
+        public static string ToTorque(this double value)
+        {
+            return Units.ToTorque(value);
+        }
     }
 }

--- a/KerbalEngineer/Extensions/FloatExtensions.cs
+++ b/KerbalEngineer/Extensions/FloatExtensions.cs
@@ -1,7 +1,7 @@
 // 
 //     Kerbal Engineer Redux
 // 
-//     Copyright (C) 2014 CYBUTEK
+//     Copyright (C) 2015 CYBUTEK
 // 
 //     This program is free software: you can redistribute it and/or modify
 //     it under the terms of the GNU General Public License as published by
@@ -17,18 +17,12 @@
 //     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // 
 
-#region Using Directives
-
-using KerbalEngineer.Helpers;
-
-#endregion
-
 namespace KerbalEngineer.Extensions
 {
+    using Helpers;
+
     public static class FloatExtensions
     {
-        #region Methods: public
-
         public static string ToAcceleration(this float value)
         {
             return Units.ToAcceleration(value);
@@ -44,14 +38,19 @@
             return Units.ToDistance(value);
         }
 
+        public static string ToFlux(this float value)
+        {
+            return Units.ToFlux(value);
+        }
+
         public static string ToForce(this float value)
         {
             return Units.ToForce(value);
         }
 
-        public static string ToTorque(this float value)
+        public static string ToMach(this float value)
         {
-            return Units.ToTorque(value);
+            return Units.ToMach(value);
         }
 
         public static string ToMass(this float value)
@@ -74,6 +73,14 @@
             return Units.ToSpeed(value);
         }
 
-        #endregion
+        public static string ToTemperature(this float value)
+        {
+            return Units.ToTemperature(value);
+        }
+
+        public static string ToTorque(this float value)
+        {
+            return Units.ToTorque(value);
+        }
     }
 }

--- a/KerbalEngineer/Extensions/PartExtensions.cs
+++ b/KerbalEngineer/Extensions/PartExtensions.cs
@@ -25,9 +25,9 @@
 
     public static class PartExtensions
     {
-        private static Part cachePart;
-        private static PartModule cachePartModule;
-        private static PartResource cachePartResource;
+        //private static Part cachePart;
+        //private static PartModule cachePartModule;
+        //private static PartResource cachePartResource;
 
         /// <summary>
         ///     Gets whether the part contains a specific resource.
@@ -55,9 +55,10 @@
         /// <summary>
         ///     Gets whether the part has fuel.
         /// </summary>
+        /* not used
         public static bool EngineHasFuel(this Part part)
         {
-            cachePartModule = GetModule<ModuleEngines>(part);
+            PartModule cachePartModule = GetModule<ModuleEngines>(part);
             if (cachePartModule != null)
             {
                 return (cachePartModule as ModuleEngines).getFlameoutState;
@@ -71,7 +72,7 @@
 
             return false;
         }
-
+        */
         /// <summary>
         ///     Gets the cost of the part excluding resources.
         /// </summary>
@@ -89,11 +90,27 @@
         }
 
         /// <summary>
+        ///     Gets the cost of the part modules
+        ///     Same as stock but without mem allocation
+        /// </summary>
+        public static double GetModuleCostsNoAlloc(this Part part, float defaultCost)
+        {
+            float cost = 0f;
+            for (int i = 0; i < part.Modules.Count; i++)
+            {
+                PartModule pm = part.Modules[i];
+                if (pm is IPartCostModifier)
+                    cost += (pm as IPartCostModifier).GetModuleCost(defaultCost);
+            }
+            return cost;
+        }
+
+        /// <summary>
         ///     Gets the cost of the part including resources.
         /// </summary>
         public static double GetCostWet(this Part part)
         {
-            return part.partInfo.cost - GetResourceCostInverted(part) + part.GetModuleCosts(0.0f);
+            return part.partInfo.cost - GetResourceCostInverted(part) + part.GetModuleCostsNoAlloc(0.0f); // part.GetModuleCosts allocate 44B per call. 
         }
 
         /// <summary>
@@ -107,9 +124,10 @@
         /// <summary>
         ///     Gets the maximum thrust of the part if it's an engine.
         /// </summary>
+        /* not used
         public static double GetMaxThrust(this Part part)
         {
-            cachePartModule = GetModule<ModuleEngines>(part);
+            PartModule cachePartModule = GetModule<ModuleEngines>(part);
             if (cachePartModule != null)
             {
                 return (cachePartModule as ModuleEngines).maxThrust;
@@ -123,20 +141,18 @@
 
             return 0.0;
         }
+        */
 
         /// <summary>
         ///     Gets the first typed PartModule in the part's module list.
         /// </summary>
         public static T GetModule<T>(this Part part) where T : PartModule
         {
-            PartModule partModule;
-            for (int i = 0; i < part.Modules.Count; ++i)
-            {
-                partModule = part.Modules[i];
-                if (partModule is T)
-                {
-                    return partModule as T;
-                }
+            for (int i = 0; i < part.Modules.Count; i++)
+            {
+                PartModule pm = part.Modules[i];
+                if (pm is T)
+                    return (T)pm;
             }
             return null;
         }
@@ -181,10 +197,10 @@
             return GetModule<ModuleEngines>(part);
         }
 
-        public static ModuleEnginesFX GetModuleEnginesFx(this Part part)
+/*        public static ModuleEnginesFX GetModuleEnginesFx(this Part part)
         {
             return GetModule<ModuleEnginesFX>(part);
-        }
+        }*/
 
         /// <summary>
         ///     Gets a ModuleGenerator typed PartModule.
@@ -205,16 +221,20 @@
         /// <summary>
         ///     Gets the current selected ModuleEnginesFX.
         /// </summary>
-        public static ModuleEnginesFX GetModuleMultiModeEngine(this Part part)
-        {
-            ModuleEnginesFX moduleEngineFx;
-            string mode = GetModule<MultiModeEngine>(part).mode;
-            for (int i = 0; i < part.Modules.Count; ++i)
-            {
-                moduleEngineFx = part.Modules[i] as ModuleEnginesFX;
-                if (moduleEngineFx != null && moduleEngineFx.engineID == mode)
-                {
-                    return moduleEngineFx;
+        public static ModuleEngines GetModuleMultiModeEngine(this Part part)
+        {
+            ModuleEngines moduleEngines;
+            MultiModeEngine multiMod = GetModule<MultiModeEngine>(part);
+            if (multiMod != null)
+            {
+                string mode = multiMod.mode;
+                for (int i = 0; i < part.Modules.Count; ++i)
+                {
+                    moduleEngines = part.Modules[i] as ModuleEngines;
+                    if (moduleEngines != null && moduleEngines.engineID == mode)
+                    {
+                        return moduleEngines;
+                    }
                 }
             }
             return null;
@@ -252,7 +272,7 @@
 
         public static ProtoModuleDecoupler GetProtoModuleDecoupler(this Part part)
         {
-            cachePartModule = GetModule<ModuleDecouple>(part);
+            PartModule cachePartModule = GetModule<ModuleDecouple>(part);
             if (cachePartModule == null)
             {
                 cachePartModule = GetModule<ModuleAnchoredDecoupler>(part);
@@ -270,7 +290,7 @@
         /// </summary>
         public static ProtoModuleEngine GetProtoModuleEngine(this Part part)
         {
-            cachePartModule = GetModule<ModuleEngines>(part);
+            PartModule cachePartModule = GetModule<ModuleEngines>(part);
             if (cachePartModule != null)
             {
                 return new ProtoModuleEngine(cachePartModule);
@@ -293,7 +313,7 @@
             double cost = 0.0;
             for (int i = 0; i < part.Resources.list.Count; ++i)
             {
-                cachePartResource = part.Resources.list[i];
+                PartResource cachePartResource = part.Resources.list[i];
                 cost = cost + (cachePartResource.amount * cachePartResource.info.unitCost);
             }
             return cost;
@@ -303,36 +323,37 @@
         ///     Gets the cost of the part's contained resources, inverted.
         /// </summary>
         public static double GetResourceCostInverted(this Part part)
+        {
+            double sum = 0;
+            for (int i = 0; i < part.Resources.list.Count; i++)
+            {
+                PartResource r = part.Resources.list[i];
+                sum += (r.maxAmount - r.amount) * r.info.unitCost;
+            }
+            return sum;
+        }
+
+        /// <summary>
+        ///     Gets the cost of the part's maximum contained resources.
+        /// </summary>
+        public static double GetResourceCostMax(this Part part)
         {
             double cost = 0.0;
             for (int i = 0; i < part.Resources.list.Count; ++i)
             {
-                cachePartResource = part.Resources.list[i];
-                cost = cost + ((cachePartResource.maxAmount - cachePartResource.amount) * cachePartResource.info.unitCost);
+                PartResource cachePartResource = part.Resources.list[i];
+                cost = cost + (cachePartResource.maxAmount * cachePartResource.info.unitCost);
             }
             return cost;
         }
 
         /// <summary>
-        ///     Gets the cost of the part's maximum contained resources.
-        /// </summary>
-        public static double GetResourceCostMax(this Part part)
-        {
-            double cost = 0.0;
-            for (int i = 0; i < part.Resources.list.Count; ++i)
-            {
-                cachePartResource = part.Resources.list[i];
-                cost = cost + (cachePartResource.maxAmount * cachePartResource.info.unitCost);
-            }
-            return cost;
-        }
-
-        /// <summary>
         ///     Gets the current specific impulse for the engine.
         /// </summary>
+        /* not used
         public static double GetSpecificImpulse(this Part part, float atmosphere)
         {
-            cachePartModule = GetModule<ModuleEngines>(part);
+            PartModule cachePartModule = GetModule<ModuleEngines>(part);
             if (cachePartModule != null)
             {
                 return (cachePartModule as ModuleEngines).atmosphereCurve.Evaluate(atmosphere);
@@ -346,6 +367,7 @@
 
             return 0.0;
         }
+        */
 
         /// <summary>
         ///     Gets the total mass of the part including resources.
@@ -360,12 +382,10 @@
         /// </summary>
         public static bool HasModule<T>(this Part part) where T : PartModule
         {
-            for (int i = 0; i < part.Modules.Count; ++i)
+            for (int i = 0; i < part.Modules.Count; i++)
             {
                 if (part.Modules[i] is T)
-                {
                     return true;
-                }
             }
             return false;
         }
@@ -375,13 +395,11 @@
         /// </summary>
         public static bool HasModule<T>(this Part part, Func<T, bool> predicate) where T : PartModule
         {
-            for (int i = 0; i < part.Modules.Count; ++i)
-            {
-                cachePartModule = part.Modules[i] as T;
-                if (cachePartModule != null && predicate(cachePartModule as T))
-                {
+            for (int i = 0; i < part.Modules.Count; i++)
+            {
+                PartModule pm = part.Modules[i];
+                if (pm is T && predicate(pm as T))
                     return true;
-                }
             }
             return false;
         }
@@ -407,7 +425,7 @@
         /// </summary>
         public static bool HasOneShotAnimation(this Part part)
         {
-            cachePartModule = GetModule<ModuleAnimateGeneric>(part);
+            PartModule cachePartModule = GetModule<ModuleAnimateGeneric>(part);
             return cachePartModule != null && (cachePartModule as ModuleAnimateGeneric).isOneShot;
         }
 
@@ -448,7 +466,7 @@
         /// </summary>
         public static bool IsEngine(this Part part)
         {
-            return HasModule<ModuleEngines>(part) || HasModule<ModuleEnginesFX>(part);
+            return HasModule<ModuleEngines>(part);
         }
 
         /// <summary>
@@ -488,15 +506,14 @@
         /// </summary>
         public static bool IsPrimary(this Part part, List<Part> partsList, PartModule module)
         {
-            for (int i = 0; i < partsList.Count; ++i)
-            {
-                cachePart = partsList[i];
-
-                if (HasModule(cachePart, module.ClassID) == false)
+            for (int i = 0; i < partsList.Count; i++)
+            {
+                var vesselPart = partsList[i];
+                if (!vesselPart.HasModule(module.ClassID))
                 {
                     continue;
                 }
-                if (cachePart == part)
+                if (vesselPart == part)
                 {
                     return true;
                 }
@@ -532,7 +549,7 @@
         /// </summary>
         public static bool IsSolidRocket(this Part part)
         {
-            return (HasModule<ModuleEngines>(part) && GetModuleEngines(part).throttleLocked) || (HasModule<ModuleEnginesFX>(part) && GetModuleEnginesFx(part).throttleLocked);
+            return (part.HasModule<ModuleEngines>() && part.GetModuleEngines().throttleLocked);
         }
 
         public class ProtoModuleDecoupler
@@ -580,6 +597,12 @@
             }
         }
 
+        // This needs updating to handle multi-mode engines and engines with multiple ModuleEngines correctly.
+        // It currently just shows the stats of the currently active module for multi-mode engines and just 
+        // the first ModuleEngines for engines with multiple modules.
+        // It should really show all the modes for multi-mode engines as separate sections.
+        // For other engines with multiple ModuleEngines it should combine the separate modules into a single set of data
+        // The constructor should be changed to take the Part itself.  It can be called if HasModule<ModuleEngines>() is true.
         public class ProtoModuleEngine
         {
             private readonly PartModule module;
@@ -619,19 +642,6 @@
                 MinimumThrust = engine.minThrust;
                 Propellants = engine.propellants;
             }
-
-            private void SetModuleEnginesFx()
-            {
-                ModuleEnginesFX engine = module as ModuleEnginesFX;
-                if (engine == null)
-                {
-                    return;
-                }
-
-                MaximumThrust = engine.maxThrust * (engine.thrustPercentage * 0.01);
-                MinimumThrust = engine.minThrust;
-                Propellants = engine.propellants;
-            }
         }
     }
 }

--- /dev/null
+++ b/KerbalEngineer/Extensions/StringExtensions.cs
@@ -1,1 +1,33 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Extensions
+{
+    public static class StringExtensions
+    {
+        public static string ToLength(this string value, int length)
+        {
+            if (value != null && value.Length > length)
+            {
+                value = value.Substring(0, length) + "...";
+            }
+            return value;
+        }
+    }
+}

--- a/KerbalEngineer/Flight/DisplayStack.cs
+++ b/KerbalEngineer/Flight/DisplayStack.cs
@@ -214,7 +214,7 @@
         /// </summary>
         private void DrawControlBar()
         {
-            GUILayout.Label("FLIGHT ENGINEER " + EngineerGlobals.AssemblyVersion, this.titleStyle);
+            GUILayout.Label("FLIGHT ENGINEER " + EngineerGlobals.ASSEMBLY_VERSION, this.titleStyle);
 
             this.DrawControlBarButtons(SectionLibrary.StockSections);
             this.DrawControlBarButtons(SectionLibrary.CustomSections);

--- a/KerbalEngineer/Flight/Readouts/Miscellaneous/SimulationDelay.cs
+++ b/KerbalEngineer/Flight/Readouts/Miscellaneous/SimulationDelay.cs
@@ -51,7 +51,7 @@
             GUILayout.BeginHorizontal();
             GUILayout.Label("Sim Delay", this.NameStyle);
             GUI.skin = HighLogic.Skin;
-            SimManager.minSimTime = new TimeSpan(0, 0, 0, 0, (int)GUILayout.HorizontalSlider(SimManager.minSimTime.Milliseconds, 0, 1000.0f));
+            SimManager.minSimTime = TimeSpan.FromMilliseconds(GUILayout.HorizontalSlider((float)SimManager.minSimTime.TotalMilliseconds, 0, 2000.0f));
             GUI.skin = null;
             GUILayout.EndHorizontal();
         }

--- a/KerbalEngineer/Flight/Readouts/Orbital/Eccentricity.cs
+++ b/KerbalEngineer/Flight/Readouts/Orbital/Eccentricity.cs
@@ -43,7 +43,7 @@
 
         public override void Draw(SectionModule section)
         {
-            this.DrawLine(FlightGlobals.ship_orbit.eccentricity.ToString("F3"), section.IsHud);
+            this.DrawLine(FlightGlobals.ship_orbit.eccentricity.ToString("F5"), section.IsHud);
         }
 
         #endregion

--- a/KerbalEngineer/Flight/Readouts/Orbital/ManoeuvreNode/ManoeuvreProcessor.cs
+++ b/KerbalEngineer/Flight/Readouts/Orbital/ManoeuvreNode/ManoeuvreProcessor.cs
@@ -30,6 +30,8 @@
 
 namespace KerbalEngineer.Flight.Readouts.Orbital.ManoeuvreNode
 {
+    using Helpers;
+
     public class ManoeuvreProcessor : IUpdatable, IUpdateRequest
     {
         #region Fields
@@ -60,6 +62,10 @@
         }
 
         public static double NormalDeltaV { get; private set; }
+
+        public static double PostBurnAp { get; private set; }
+
+        public static double PostBurnPe { get; private set; }
 
         public static double ProgradeDeltaV { get; private set; }
 
@@ -108,6 +114,8 @@
             NormalDeltaV = deltaV.y;
             RadialDeltaV = deltaV.x;
             TotalDeltaV = node.GetBurnVector(FlightGlobals.ship_orbit).magnitude;
+            PostBurnAp = node.nextPatch != null ? node.nextPatch.ApA : 0;
+            PostBurnPe = node.nextPatch != null ? node.nextPatch.PeA : 0;
 
             UniversalTime = FlightGlobals.ActiveVessel.patchedConicSolver.maneuverNodes[0].UT;
             AngleToPrograde = FlightGlobals.ActiveVessel.patchedConicSolver.maneuverNodes[0].patch.GetAngleToPrograde(UniversalTime);
@@ -163,7 +171,7 @@
                     deltaVDrain = deltaV.Clamp(0.0, stageDeltaV);
                 }
 
-                var exhaustVelocity = stage.isp * 9.82;
+                var exhaustVelocity = stage.isp * Units.GRAVITY;
                 var flowRate = stage.thrust / exhaustVelocity;
                 var endMass = Math.Exp(Math.Log(startMass) - deltaVDrain / exhaustVelocity);
                 var deltaMass = (startMass - endMass) * Math.Exp(-(deltaVDrain * 0.001) / exhaustVelocity);

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Orbital/ManoeuvreNode/PostBurnApoapsis.cs
@@ -1,1 +1,69 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2014 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+#region Using Directives
+
+using System;
+
+using KerbalEngineer.Extensions;
+using KerbalEngineer.Flight.Sections;
+
+#endregion
+
+namespace KerbalEngineer.Flight.Readouts.Orbital.ManoeuvreNode
+{
+    public class PostBurnApoapsis : ReadoutModule
+    {
+        #region Constructors
+
+        public PostBurnApoapsis()
+        {
+            this.Name = "Post-burn Apoapsis";
+            this.Category = ReadoutCategory.GetCategory("Orbital");
+            this.HelpString = String.Empty;
+            this.IsDefault = false;
+        }
+
+        #endregion
+
+        #region Methods: public
+
+        public override void Draw(SectionModule section)
+        {
+            if (!ManoeuvreProcessor.ShowDetails)
+            {
+                return;
+            }
+
+            this.DrawLine("Post-burn Apoapsis", ManoeuvreProcessor.PostBurnAp.ToDistance(), section.IsHud);
+        }
+
+        public override void Reset()
+        {
+            ManoeuvreProcessor.Reset();
+        }
+
+        public override void Update()
+        {
+            ManoeuvreProcessor.RequestUpdate();
+        }
+
+        #endregion
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Orbital/ManoeuvreNode/PostBurnPeriapsis.cs
@@ -1,1 +1,69 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2014 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+#region Using Directives
+
+using System;
+
+using KerbalEngineer.Extensions;
+using KerbalEngineer.Flight.Sections;
+
+#endregion
+
+namespace KerbalEngineer.Flight.Readouts.Orbital.ManoeuvreNode
+{
+    public class PostBurnPeriapsis : ReadoutModule
+    {
+        #region Constructors
+
+        public PostBurnPeriapsis()
+        {
+            this.Name = "Post-burn Periapsis";
+            this.Category = ReadoutCategory.GetCategory("Orbital");
+            this.HelpString = String.Empty;
+            this.IsDefault = false;
+        }
+
+        #endregion
+
+        #region Methods: public
+
+        public override void Draw(SectionModule section)
+        {
+            if (!ManoeuvreProcessor.ShowDetails)
+            {
+                return;
+            }
+
+            this.DrawLine("Post-burn Periapsis", ManoeuvreProcessor.PostBurnPe.ToDistance(), section.IsHud);
+        }
+
+        public override void Reset()
+        {
+            ManoeuvreProcessor.Reset();
+        }
+
+        public override void Update()
+        {
+            ManoeuvreProcessor.RequestUpdate();
+        }
+
+        #endregion
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Orbital/SpeedAtApoapsis.cs
@@ -1,1 +1,68 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2014 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+#region Using Directives
+
+using System;
+using KerbalEngineer.Flight.Sections;
+using KerbalEngineer.Helpers;
+using KerbalEngineer.Extensions;
+
+#endregion
+
+namespace KerbalEngineer.Flight.Readouts.Orbital
+{
+    public class SpeedAtApoapsis : ReadoutModule
+    {
+        #region Constructors
+
+        public SpeedAtApoapsis()
+        {
+            this.Name = "Speed at Apoapsis";
+            this.Category = ReadoutCategory.GetCategory("Orbital");
+            this.HelpString = "Shows the orbital speed of the vessel when at apoapsis, the highest point of the orbit.";
+            this.IsDefault = false;
+        }
+
+        #endregion
+
+        #region Methods: public
+
+        public override void Draw(SectionModule section)
+        {
+            // Vis-viva: v^2 = GM(2/r - 1/a)
+            // All this is easily got from the ships orbit (and reference body)
+            String str;
+            Orbit orbit = FlightGlobals.ship_orbit;
+            if (orbit.eccentricity > 1.0)
+                str = "---m/s";
+            else
+            {
+                double speedsqr = orbit.referenceBody.gravParameter * ((2 / orbit.ApR) - (1 / orbit.semiMajorAxis));
+                if (Double.IsNaN(speedsqr) || speedsqr < 0)
+                    str = "---m/s";     // Don't think this is possible barring bugs in the Orbit class
+                else
+                    str = Math.Sqrt(speedsqr).ToSpeed();
+            }
+            this.DrawLine(str, section.IsHud);
+        }
+
+        #endregion
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Orbital/SpeedAtPeriapsis.cs
@@ -1,1 +1,64 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2014 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+#region Using Directives
+
+using System;
+using KerbalEngineer.Flight.Sections;
+using KerbalEngineer.Helpers;
+using KerbalEngineer.Extensions;
+
+#endregion
+
+namespace KerbalEngineer.Flight.Readouts.Orbital
+{
+    public class SpeedAtPeriapsis : ReadoutModule
+    {
+        #region Constructors
+
+        public SpeedAtPeriapsis()
+        {
+            this.Name = "Speed at Periapsis";
+            this.Category = ReadoutCategory.GetCategory("Orbital");
+            this.HelpString = "Shows the orbital speed of the vessel when at periapsis, the lowest point of the orbit.";
+            this.IsDefault = false;
+        }
+
+        #endregion
+
+        #region Methods: public
+
+        public override void Draw(SectionModule section)
+        {
+            // Vis-viva: v^2 = GM(2/r - 1/a)
+            // All this is easily got from the ships orbit (and reference body)
+            String str;
+            Orbit orbit = FlightGlobals.ship_orbit;
+            double oneovera = (orbit.eccentricity == 1) ? 0 : (1 / orbit.semiMajorAxis);
+            double speedsqr = orbit.referenceBody.gravParameter * ((2 / orbit.PeR) - oneovera);
+            if (Double.IsNaN(speedsqr) || speedsqr < 0)
+                str = "---m/s";
+            else
+                str = Math.Sqrt(speedsqr).ToSpeed();
+            this.DrawLine(str, section.IsHud);
+        }
+
+        #endregion
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Orbital/TimeToAtmosphere.cs
@@ -1,1 +1,99 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2014 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+#region Using Directives
+
+using System;
+using KerbalEngineer.Flight.Sections;
+using KerbalEngineer.Helpers;
+
+#endregion
+
+namespace KerbalEngineer.Flight.Readouts.Orbital
+{
+    public class TimeToAtmosphere : ReadoutModule
+    {
+        //private LogMsg log = new LogMsg();
+        
+        #region Constructors
+
+        public TimeToAtmosphere()
+        {
+            this.Name = "Time to Atmosphere";
+            this.Category = ReadoutCategory.GetCategory("Orbital");
+            this.HelpString = "Shows the time until the vessel enters or leaves atmosphere.";
+            this.IsDefault = false;
+        }
+
+        #endregion
+
+        #region Methods: public
+
+        public override void Draw(SectionModule section)
+        {
+            String str;
+            Orbit orbit = FlightGlobals.ship_orbit;
+
+            if (orbit.referenceBody.atmosphere && orbit.PeA < orbit.referenceBody.atmosphereDepth)
+            {
+                double tA = orbit.TrueAnomalyAtRadius(orbit.referenceBody.atmosphereDepth + orbit.referenceBody.Radius);
+                //log.buf.AppendFormat("tA = {0}\n", tA);
+                double utTime = Planetarium.GetUniversalTime();
+                //log.buf.AppendFormat("utTime = {0}\n", utTime);
+                double timeAtRad1 = orbit.GetUTforTrueAnomaly(tA, orbit.period * 0.5);
+                //log.buf.AppendFormat("timeAtRad1 = {0}\n", timeAtRad1);
+                if (timeAtRad1 < utTime)
+                {
+                    timeAtRad1 += orbit.period;
+                    //log.buf.AppendFormat("timeAtRad1 = {0}\n", timeAtRad1);
+                }
+                double timeAtRad2 = orbit.GetUTforTrueAnomaly(-tA, orbit.period * 0.5);
+                //log.buf.AppendFormat("timeAtRad2 = {0}\n", timeAtRad2);
+                if (timeAtRad2 < utTime)
+                {
+                    timeAtRad2 += orbit.period;
+                    //log.buf.AppendFormat("timeAtRad2 = {0}\n", timeAtRad2);
+                }
+                double time = Math.Min(timeAtRad1, timeAtRad2) - utTime;
+                //log.buf.AppendFormat("time = {0}\n", time);
+
+                if (Double.IsNaN(time))
+                {
+                    str = "---s";
+                    //log.buf.AppendLine("time is NaN");
+                }
+                else
+                {
+                    str = TimeFormatter.ConvertToString(time);
+                    //log.buf.AppendFormat("str = {0}\n", str);
+                }
+            }
+            else
+            {
+                str = "---s";
+                //log.buf.AppendLine("no atmosphere or pe > atmosphere");
+            }
+
+            //log.Flush();
+            this.DrawLine(str, section.IsHud);
+        }
+
+        #endregion
+    }
+}

--- a/KerbalEngineer/Flight/Readouts/ReadoutLibrary.cs
+++ b/KerbalEngineer/Flight/Readouts/ReadoutLibrary.cs
@@ -1,7 +1,5 @@
 // 
-//     Kerbal Engineer Redux
-// 
-//     Copyright (C) 2014 CYBUTEK
+//     Copyright (C) 2015 CYBUTEK
 // 
 //     This program is free software: you can redistribute it and/or modify
 //     it under the terms of the GNU General Public License as published by
@@ -19,8 +17,6 @@
 
 namespace KerbalEngineer.Flight.Readouts
 {
-    #region Using Directives
-
     using System;
     using System.Collections.Generic;
     using System.Linq;
@@ -30,6 +26,7 @@
     using Rendezvous;
     using Settings;
     using Surface;
+    using Thermal;
     using Vessel;
     using AltitudeSeaLevel = Surface.AltitudeSeaLevel;
     using ApoapsisHeight = Orbital.ApoapsisHeight;
@@ -40,17 +37,9 @@
     using TimeToApoapsis = Orbital.TimeToApoapsis;
     using TimeToPeriapsis = Orbital.TimeToPeriapsis;
 
-    #endregion
-
     public static class ReadoutLibrary
     {
-        #region Fields
-
         private static List<ReadoutModule> readouts = new List<ReadoutModule>();
-
-        #endregion
-
-        #region Constructors
 
         /// <summary>
         ///     Sets up and populates the readout library with the stock readouts.
@@ -63,6 +52,7 @@
                 ReadoutCategory.SetCategory("Surface", "Surface and atmospheric readouts.");
                 ReadoutCategory.SetCategory("Vessel", "Vessel performance statistics.");
                 ReadoutCategory.SetCategory("Rendezvous", "Readouts for rendezvous manovoeures.");
+                ReadoutCategory.SetCategory("Thermal", "Thermal characteristics readouts.");
                 ReadoutCategory.SetCategory("Miscellaneous", "Miscellaneous readouts.");
                 ReadoutCategory.Selected = ReadoutCategory.GetCategory("Orbital");
 
@@ -101,6 +91,11 @@
                 readouts.Add(new NodeTimeToHalfBurn());
                 readouts.Add(new NodeAngleToPrograde());
                 readouts.Add(new NodeAngleToRetrograde());
+                readouts.Add(new PostBurnApoapsis());
+                readouts.Add(new PostBurnPeriapsis());
+                readouts.Add(new SpeedAtApoapsis());
+                readouts.Add(new SpeedAtPeriapsis());
+                readouts.Add(new TimeToAtmosphere());
 
                 // Surface
                 readouts.Add(new AltitudeSeaLevel());
@@ -109,6 +104,7 @@
                 readouts.Add(new VerticalAcceleration());
                 readouts.Add(new HorizontalSpeed());
                 readouts.Add(new HorizontalAcceleration());
+                readouts.Add(new MachNumber());
                 readouts.Add(new Latitude());
                 readouts.Add(new Longitude());
                 readouts.Add(new GeeForce());
@@ -171,7 +167,22 @@
                 readouts.Add(new Rendezvous.OrbitalPeriod());
                 readouts.Add(new Rendezvous.SemiMajorAxis());
                 readouts.Add(new Rendezvous.SemiMinorAxis());
-                
+
+                // Thermal
+                readouts.Add(new InternalFlux());
+                readouts.Add(new ConvectionFlux());
+                readouts.Add(new RadiationFlux());
+                readouts.Add(new CriticalPart());
+                readouts.Add(new CriticalTemperature());
+                readouts.Add(new CriticalSkinTemperature());
+                readouts.Add(new CriticalThermalPercentage());
+                readouts.Add(new HottestPart());
+                readouts.Add(new HottestTemperature());
+                readouts.Add(new HottestSkinTemperature());
+                readouts.Add(new CoolestPart());
+                readouts.Add(new CoolestTemperature());
+                readouts.Add(new CoolestSkinTemperature());
+
                 // Misc
                 readouts.Add(new Separator());
                 readouts.Add(new GuiSizeAdjustor());
@@ -188,22 +199,20 @@
             }
         }
 
-        #endregion
-
-        #region Properties
-
         /// <summary>
         ///     Gets and sets the available readout modules.
         /// </summary>
         public static List<ReadoutModule> Readouts
         {
-            get { return readouts; }
-            set { readouts = value; }
-        }
-
-        #endregion
-
-        #region Methods
+            get
+            {
+                return readouts;
+            }
+            set
+            {
+                readouts = value;
+            }
+        }
 
         /// <summary>
         ///     Gets a list of readout modules which are associated with the specified category.
@@ -226,7 +235,7 @@
         /// </summary>
         public static void Reset()
         {
-            foreach (var readout in readouts)
+            foreach (ReadoutModule readout in readouts)
             {
                 readout.Reset();
             }
@@ -239,8 +248,8 @@
         {
             try
             {
-                var handler = SettingHandler.Load("HelpStrings.xml");
-                foreach (var readout in readouts)
+                SettingHandler handler = SettingHandler.Load("HelpStrings.xml");
+                foreach (ReadoutModule readout in readouts)
                 {
                     readout.HelpString = handler.GetSet(readout.Category + "." + readout.GetType().Name, readout.HelpString);
                 }
@@ -251,7 +260,5 @@
                 Logger.Exception(ex);
             }
         }
-
-        #endregion
     }
 }

--- a/KerbalEngineer/Flight/Readouts/ReadoutModule.cs
+++ b/KerbalEngineer/Flight/Readouts/ReadoutModule.cs
@@ -29,6 +29,8 @@
 
 namespace KerbalEngineer.Flight.Readouts
 {
+    using Extensions;
+
     public abstract class ReadoutModule
     {
         #region Fields
@@ -178,13 +180,13 @@
             {
                 GUILayout.Label(this.Name, this.NameStyle);
                 GUILayout.FlexibleSpace();
-                GUILayout.Label(value, this.ValueStyle);
+                GUILayout.Label(value.ToLength(20), this.ValueStyle);
             }
             else
             {
                 GUILayout.Label(this.Name, this.NameStyle, GUILayout.Height(this.NameStyle.fontSize * 1.2f));
                 GUILayout.FlexibleSpace();
-                GUILayout.Label(value, this.ValueStyle, GUILayout.Height(this.ValueStyle.fontSize * 1.2f));
+                GUILayout.Label(value.ToLength(20), this.ValueStyle, GUILayout.Height(this.ValueStyle.fontSize * 1.2f));
             }
             GUILayout.EndHorizontal();
 
@@ -198,13 +200,13 @@
             {
                 GUILayout.Label(name, this.NameStyle);
                 GUILayout.FlexibleSpace();
-                GUILayout.Label(value, this.ValueStyle);
+                GUILayout.Label(value.ToLength(20), this.ValueStyle);
             }
             else
             {
                 GUILayout.Label(name, this.NameStyle, GUILayout.Height(this.NameStyle.fontSize * 1.2f));
                 GUILayout.FlexibleSpace();
-                GUILayout.Label(value, this.ValueStyle, GUILayout.Height(this.ValueStyle.fontSize * 1.2f));
+                GUILayout.Label(value.ToLength(20), this.ValueStyle, GUILayout.Height(this.ValueStyle.fontSize * 1.2f));
             }
             GUILayout.EndHorizontal();
 

--- a/KerbalEngineer/Flight/Readouts/Rendezvous/RendezvousProcessor.cs
+++ b/KerbalEngineer/Flight/Readouts/Rendezvous/RendezvousProcessor.cs
@@ -1,7 +1,7 @@
 // 
 //     Kerbal Engineer Redux
 // 
-//     Copyright (C) 2014 CYBUTEK
+//     Copyright (C) 2015 CYBUTEK
 // 
 //     This program is free software: you can redistribute it and/or modify
 //     it under the terms of the GNU General Public License as published by
@@ -17,30 +17,19 @@
 //     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // 
 
-#region Using Directives
-
-using System;
-
-using KerbalEngineer.Extensions;
-using KerbalEngineer.Helpers;
-
-#endregion
-
 namespace KerbalEngineer.Flight.Readouts.Rendezvous
 {
+    using System;
+    using Extensions;
+    using Helpers;
+
     public class RendezvousProcessor : IUpdatable, IUpdateRequest
     {
-        #region Fields
-
         private static readonly RendezvousProcessor instance = new RendezvousProcessor();
 
         private Orbit originOrbit;
         private Orbit targetOrbit;
 
-        #endregion
-
-        #region Properties
-
         /// <summary>
         ///     Gets the target's altitude above its reference body.
         /// </summary>
@@ -71,7 +60,10 @@
         /// </summary>
         public static RendezvousProcessor Instance
         {
-            get { return instance; }
+            get
+            {
+                return instance;
+            }
         }
 
         /// <summary>
@@ -149,10 +141,6 @@
         /// </summary>
         public bool UpdateRequested { get; set; }
 
-        #endregion
-
-        #region Methods: public
-
         /// <summary>
         ///     Request and update to calculate the details.
         /// </summary>
@@ -166,7 +154,13 @@
         /// </summary>
         public void Update()
         {
-            if (FlightGlobals.fetch.VesselTarget == null)
+            if (FlightGlobals.fetch == null ||
+                FlightGlobals.fetch.VesselTarget == null ||
+                FlightGlobals.ActiveVessel == null ||
+                FlightGlobals.ActiveVessel.targetObject == null ||
+                FlightGlobals.ActiveVessel.targetObject.GetOrbit() == null ||
+                FlightGlobals.ship_orbit == null ||
+                FlightGlobals.ship_orbit.referenceBody == null)
             {
                 ShowDetails = false;
                 return;
@@ -174,55 +168,50 @@
 
             ShowDetails = true;
 
-            this.targetOrbit = FlightGlobals.fetch.VesselTarget.GetOrbit();
-            this.originOrbit = (FlightGlobals.ship_orbit.referenceBody == Planetarium.fetch.Sun || FlightGlobals.ship_orbit.referenceBody == FlightGlobals.ActiveVessel.targetObject.GetOrbit().referenceBody)
+            targetOrbit = FlightGlobals.fetch.VesselTarget.GetOrbit();
+            originOrbit = (FlightGlobals.ship_orbit.referenceBody == Planetarium.fetch.Sun ||
+                           FlightGlobals.ship_orbit.referenceBody == FlightGlobals.ActiveVessel.targetObject.GetOrbit().referenceBody)
                 ? FlightGlobals.ship_orbit
                 : FlightGlobals.ship_orbit.referenceBody.orbit;
 
-            RelativeInclination = this.originOrbit.GetRelativeInclination(this.targetOrbit);
+            RelativeInclination = originOrbit.GetRelativeInclination(targetOrbit);
             RelativeVelocity = FlightGlobals.ship_tgtSpeed;
-            RelativeSpeed = FlightGlobals.ship_obtSpeed - this.targetOrbit.orbitalSpeed;
-            PhaseAngle = this.originOrbit.GetPhaseAngle(this.targetOrbit);
-            InterceptAngle = this.CalcInterceptAngle();
-            TimeToAscendingNode = this.originOrbit.GetTimeToVector(this.GetAscendingNode());
-            TimeToDescendingNode = this.originOrbit.GetTimeToVector(this.GetDescendingNode());
-            AngleToAscendingNode = this.originOrbit.GetAngleToVector(this.GetAscendingNode());
-            AngleToDescendingNode = this.originOrbit.GetAngleToVector(this.GetDescendingNode());
-            AltitudeSeaLevel = this.targetOrbit.altitude;
-            ApoapsisHeight = this.targetOrbit.ApA;
-            PeriapsisHeight = this.targetOrbit.PeA;
-            TimeToApoapsis = this.targetOrbit.timeToAp;
-            TimeToPeriapsis = this.targetOrbit.timeToPe;
-            SemiMajorAxis = this.targetOrbit.semiMajorAxis;
-            SemiMinorAxis = this.targetOrbit.semiMinorAxis;
-
-            Distance = Vector3d.Distance(this.targetOrbit.pos, this.originOrbit.pos);
-            OrbitalPeriod = this.targetOrbit.period;
-        }
-
-        #endregion
-
-        #region Methods: private
+            RelativeSpeed = FlightGlobals.ship_obtSpeed - targetOrbit.orbitalSpeed;
+            PhaseAngle = originOrbit.GetPhaseAngle(targetOrbit);
+            InterceptAngle = CalcInterceptAngle();
+            TimeToAscendingNode = originOrbit.GetTimeToVector(GetAscendingNode());
+            TimeToDescendingNode = originOrbit.GetTimeToVector(GetDescendingNode());
+            AngleToAscendingNode = originOrbit.GetAngleToVector(GetAscendingNode());
+            AngleToDescendingNode = originOrbit.GetAngleToVector(GetDescendingNode());
+            AltitudeSeaLevel = targetOrbit.altitude;
+            ApoapsisHeight = targetOrbit.ApA;
+            PeriapsisHeight = targetOrbit.PeA;
+            TimeToApoapsis = targetOrbit.timeToAp;
+            TimeToPeriapsis = targetOrbit.timeToPe;
+            SemiMajorAxis = targetOrbit.semiMajorAxis;
+            SemiMinorAxis = targetOrbit.semiMinorAxis;
+
+            Distance = Vector3d.Distance(targetOrbit.pos, originOrbit.pos);
+            OrbitalPeriod = targetOrbit.period;
+        }
 
         private double CalcInterceptAngle()
         {
-            var originRadius = (this.originOrbit.semiMinorAxis + this.originOrbit.semiMajorAxis) * 0.5;
-            var targetRadius = (this.targetOrbit.semiMinorAxis + this.targetOrbit.semiMajorAxis) * 0.5;
-            var angle = 180.0 * (1.0 - Math.Pow((originRadius + targetRadius) / (2.0 * targetRadius), 1.5));
+            double originRadius = (originOrbit.semiMinorAxis + originOrbit.semiMajorAxis) * 0.5;
+            double targetRadius = (targetOrbit.semiMinorAxis + targetOrbit.semiMajorAxis) * 0.5;
+            double angle = 180.0 * (1.0 - Math.Pow((originRadius + targetRadius) / (2.0 * targetRadius), 1.5));
             angle = PhaseAngle - angle;
             return RelativeInclination < 90.0 ? AngleHelper.Clamp360(angle) : AngleHelper.Clamp360(360.0 - (180.0 - angle));
         }
 
         private Vector3d GetAscendingNode()
         {
-            return Vector3d.Cross(this.targetOrbit.GetOrbitNormal(), this.originOrbit.GetOrbitNormal());
+            return Vector3d.Cross(targetOrbit.GetOrbitNormal(), originOrbit.GetOrbitNormal());
         }
 
         private Vector3d GetDescendingNode()
         {
-            return Vector3d.Cross(this.originOrbit.GetOrbitNormal(), this.targetOrbit.GetOrbitNormal());
-        }
-
-        #endregion
+            return Vector3d.Cross(originOrbit.GetOrbitNormal(), targetOrbit.GetOrbitNormal());
+        }
     }
 }

--- a/KerbalEngineer/Flight/Readouts/Surface/AtmosphericEfficiency.cs
+++ b/KerbalEngineer/Flight/Readouts/Surface/AtmosphericEfficiency.cs
@@ -1,7 +1,7 @@
 // 
 //     Kerbal Engineer Redux
 // 
-//     Copyright (C) 2014 CYBUTEK
+//     Copyright (C) 2015 CYBUTEK
 // 
 //     This program is free software: you can redistribute it and/or modify
 //     it under the terms of the GNU General Public License as published by
@@ -17,36 +17,26 @@
 //     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // 
 
-#region Using Directives
-
-using KerbalEngineer.Extensions;
-using KerbalEngineer.Flight.Sections;
-
-#endregion
-
 namespace KerbalEngineer.Flight.Readouts.Surface
 {
+    using Extensions;
+    using Sections;
+
     public class AtmosphericEfficiency : ReadoutModule
     {
-        #region Constructors
-
         public AtmosphericEfficiency()
         {
-            this.Name = "Atmos. Efficiency";
-            this.Category = ReadoutCategory.GetCategory("Surface");
-            this.HelpString = "Shows you vessel's efficiency as a ratio of the current velocity and terminal velocity.  Less than 1 means that you are losing efficiency due to gravity and greater than 1 is due to drag.";
-            this.IsDefault = true;
+            Name = "Atmos. Efficiency";
+            Category = ReadoutCategory.GetCategory("Surface");
+            HelpString = "Shows you vessel's efficiency as a ratio of the current velocity and terminal velocity.  Less than 100% means that you are losing efficiency due to gravity and greater than 100% is due to drag.";
+            IsDefault = false;
         }
-
-        #endregion
-
-        #region Methods: public
 
         public override void Draw(SectionModule section)
         {
             if (AtmosphericProcessor.ShowDetails)
             {
-                this.DrawLine(AtmosphericProcessor.Efficiency.ToPercent(), section.IsHud);
+                DrawLine(AtmosphericProcessor.Efficiency.ToPercent(), section.IsHud);
             }
         }
 
@@ -59,7 +49,5 @@
         {
             AtmosphericProcessor.RequestUpdate();
         }
-
-        #endregion
     }
 }

--- a/KerbalEngineer/Flight/Readouts/Surface/HorizontalSpeed.cs
+++ b/KerbalEngineer/Flight/Readouts/Surface/HorizontalSpeed.cs
@@ -21,6 +21,7 @@
 
 using KerbalEngineer.Extensions;
 using KerbalEngineer.Flight.Sections;
+using System;
 
 #endregion
 
@@ -44,7 +45,11 @@
 
         public override void Draw(SectionModule section)
         {
-            this.DrawLine(FlightGlobals.ActiveVessel.horizontalSrfSpeed.ToSpeed(), section.IsHud);
+            // Used to do this but the bug-fix to horizontalSrfSpeed in KSP 1.0.3 actually made it worse so workaround
+            //this.DrawLine(FlightGlobals.ActiveVessel.horizontalSrfSpeed.ToSpeed(), section.IsHud);
+            var ves = FlightGlobals.ActiveVessel;
+            double horizSpeed = Math.Sqrt(ves.srfSpeed * ves.srfSpeed - ves.verticalSpeed * ves.verticalSpeed);
+            this.DrawLine(horizSpeed.ToSpeed(), section.IsHud);
         }
 
         #endregion

--- a/KerbalEngineer/Flight/Readouts/Surface/Latitude.cs
+++ b/KerbalEngineer/Flight/Readouts/Surface/Latitude.cs
@@ -20,6 +20,7 @@
 #region Using Directives
 
 using KerbalEngineer.Flight.Sections;
+using KerbalEngineer.Helpers;
 
 #endregion
 
@@ -43,7 +44,7 @@
 
         public override void Draw(SectionModule section)
         {
-            this.DrawLine(KSPUtil.PrintLatitude(FlightGlobals.ship_latitude), section.IsHud);
+            this.DrawLine(Units.ToAngleDMS(FlightGlobals.ship_latitude) + (FlightGlobals.ship_latitude < 0 ? " S" : " N"), section.IsHud);
         }
 
         #endregion

--- a/KerbalEngineer/Flight/Readouts/Surface/Longitude.cs
+++ b/KerbalEngineer/Flight/Readouts/Surface/Longitude.cs
@@ -17,35 +17,25 @@
 //     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // 
 
-#region Using Directives
-
-using KerbalEngineer.Flight.Sections;
-
-#endregion
-
 namespace KerbalEngineer.Flight.Readouts.Surface
 {
+    using Helpers;
+    using Sections;
+
     public class Longitude : ReadoutModule
     {
-        #region Constructors
-
         public Longitude()
         {
-            this.Name = "Longitude";
-            this.Category = ReadoutCategory.GetCategory("Surface");
-            this.HelpString = "Shows the vessel's longitude around a celestial body.  Longitude is the angle from the bodies prime meridian.";
-            this.IsDefault = true;
+            Name = "Longitude";
+            Category = ReadoutCategory.GetCategory("Surface");
+            HelpString = "Shows the vessel's longitude around a celestial body.  Longitude is the angle from the bodies prime meridian.";
+            IsDefault = true;
         }
-
-        #endregion
-
-        #region Methods: public
 
         public override void Draw(SectionModule section)
         {
-            this.DrawLine(KSPUtil.PrintLongitude(FlightGlobals.ship_longitude), section.IsHud);
+            double angle = AngleHelper.Clamp180(FlightGlobals.ship_longitude);
+            DrawLine(Units.ToAngleDMS(angle) + (angle < 0.0 ? "W" : " E"), section.IsHud);
         }
-
-        #endregion
     }
 }

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Surface/MachNumber.cs
@@ -1,1 +1,43 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Flight.Readouts.Surface
+{
+    using Extensions;
+    using Sections;
+
+    public class MachNumber : ReadoutModule
+    {
+        public MachNumber()
+        {
+            Name = "Mach Number";
+            Category = ReadoutCategory.GetCategory("Surface");
+            HelpString = "Shows the vessel's mach number.";
+            IsDefault = true;
+        }
+
+        public override void Draw(SectionModule section)
+        {
+            if (FlightGlobals.ActiveVessel.atmDensity > 0.0)
+            {
+                DrawLine(FlightGlobals.ActiveVessel.mach.ToMach(), section.IsHud);
+            }
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Thermal/ConvectionFlux.cs
@@ -1,1 +1,53 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Flight.Readouts.Thermal
+{
+    using Extensions;
+    using Sections;
+
+    public class ConvectionFlux : ReadoutModule
+    {
+        public ConvectionFlux()
+        {
+            Name = "Convection Flux";
+            Category = ReadoutCategory.GetCategory("Thermal");
+            HelpString = string.Empty;
+            IsDefault = true;
+        }
+
+        public override void Draw(SectionModule section)
+        {
+            if (ThermalProcessor.ShowDetails && FlightGlobals.ActiveVessel.atmDensity > 0.0)
+            {
+                DrawLine(ThermalProcessor.ConvectionFlux.ToFlux(), section.IsHud);
+            }
+        }
+
+        public override void Reset()
+        {
+            FlightEngineerCore.Instance.AddUpdatable(ThermalProcessor.Instance);
+        }
+
+        public override void Update()
+        {
+            ThermalProcessor.RequestUpdate();
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Thermal/CoolestPart.cs
@@ -1,1 +1,52 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Flight.Readouts.Thermal
+{
+    using Sections;
+
+    public class CoolestPart : ReadoutModule
+    {
+        public CoolestPart()
+        {
+            Name = "Coolest Part";
+            Category = ReadoutCategory.GetCategory("Thermal");
+            HelpString = string.Empty;
+            IsDefault = true;
+        }
+
+        public override void Draw(SectionModule section)
+        {
+            if (ThermalProcessor.ShowDetails)
+            {
+                DrawLine(ThermalProcessor.CoolestPartName, section.IsHud);
+            }
+        }
+
+        public override void Reset()
+        {
+            FlightEngineerCore.Instance.AddUpdatable(ThermalProcessor.Instance);
+        }
+
+        public override void Update()
+        {
+            ThermalProcessor.RequestUpdate();
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Thermal/CoolestSkinTemperature.cs
@@ -1,1 +1,53 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Flight.Readouts.Thermal
+{
+    using Helpers;
+    using Sections;
+
+    public class CoolestSkinTemperature : ReadoutModule
+    {
+        public CoolestSkinTemperature()
+        {
+            Name = "Coolest Skin Temperature";
+            Category = ReadoutCategory.GetCategory("Thermal");
+            HelpString = string.Empty;
+            IsDefault = true;
+        }
+
+        public override void Draw(SectionModule section)
+        {
+            if (ThermalProcessor.ShowDetails)
+            {
+                DrawLine(Units.ToTemperature(ThermalProcessor.CoolestSkinTemperature, ThermalProcessor.CoolestSkinTemperatureMax), section.IsHud);
+            }
+        }
+
+        public override void Reset()
+        {
+            FlightEngineerCore.Instance.AddUpdatable(ThermalProcessor.Instance);
+        }
+
+        public override void Update()
+        {
+            ThermalProcessor.RequestUpdate();
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Thermal/CoolestTemperature.cs
@@ -1,1 +1,53 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Flight.Readouts.Thermal
+{
+    using Helpers;
+    using Sections;
+
+    public class CoolestTemperature : ReadoutModule
+    {
+        public CoolestTemperature()
+        {
+            Name = "Coolest Temperature";
+            Category = ReadoutCategory.GetCategory("Thermal");
+            HelpString = string.Empty;
+            IsDefault = true;
+        }
+
+        public override void Draw(SectionModule section)
+        {
+            if (ThermalProcessor.ShowDetails)
+            {
+                DrawLine(Units.ToTemperature(ThermalProcessor.CoolestTemperature, ThermalProcessor.CoolestTemperatureMax), section.IsHud);
+            }
+        }
+
+        public override void Reset()
+        {
+            FlightEngineerCore.Instance.AddUpdatable(ThermalProcessor.Instance);
+        }
+
+        public override void Update()
+        {
+            ThermalProcessor.RequestUpdate();
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Thermal/CriticalPart.cs
@@ -1,1 +1,52 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Flight.Readouts.Thermal
+{
+    using Sections;
+
+    public class CriticalPart : ReadoutModule
+    {
+        public CriticalPart()
+        {
+            Name = "Critical Part";
+            Category = ReadoutCategory.GetCategory("Thermal");
+            HelpString = string.Empty;
+            IsDefault = true;
+        }
+
+        public override void Draw(SectionModule section)
+        {
+            if (ThermalProcessor.ShowDetails)
+            {
+                DrawLine(ThermalProcessor.CriticalPartName, section.IsHud);
+            }
+        }
+
+        public override void Reset()
+        {
+            FlightEngineerCore.Instance.AddUpdatable(ThermalProcessor.Instance);
+        }
+
+        public override void Update()
+        {
+            ThermalProcessor.RequestUpdate();
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Thermal/CriticalSkinTemperature.cs
@@ -1,1 +1,53 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Flight.Readouts.Thermal
+{
+    using Helpers;
+    using Sections;
+
+    public class CriticalSkinTemperature : ReadoutModule
+    {
+        public CriticalSkinTemperature()
+        {
+            Name = "Critical Skin Temperature";
+            Category = ReadoutCategory.GetCategory("Thermal");
+            HelpString = string.Empty;
+            IsDefault = true;
+        }
+
+        public override void Draw(SectionModule section)
+        {
+            if (ThermalProcessor.ShowDetails)
+            {
+                DrawLine(Units.ToTemperature(ThermalProcessor.CriticalSkinTemperature, ThermalProcessor.CriticalSkinTemperatureMax), section.IsHud);
+            }
+        }
+
+        public override void Reset()
+        {
+            FlightEngineerCore.Instance.AddUpdatable(ThermalProcessor.Instance);
+        }
+
+        public override void Update()
+        {
+            ThermalProcessor.RequestUpdate();
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Thermal/CriticalTemperature.cs
@@ -1,1 +1,53 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Flight.Readouts.Thermal
+{
+    using Helpers;
+    using Sections;
+
+    public class CriticalTemperature : ReadoutModule
+    {
+        public CriticalTemperature()
+        {
+            Name = "Critical Temperature";
+            Category = ReadoutCategory.GetCategory("Thermal");
+            HelpString = string.Empty;
+            IsDefault = true;
+        }
+
+        public override void Draw(SectionModule section)
+        {
+            if (ThermalProcessor.ShowDetails)
+            {
+                DrawLine(Units.ToTemperature(ThermalProcessor.CriticalTemperature, ThermalProcessor.CriticalTemperatureMax), section.IsHud);
+            }
+        }
+
+        public override void Reset()
+        {
+            FlightEngineerCore.Instance.AddUpdatable(ThermalProcessor.Instance);
+        }
+
+        public override void Update()
+        {
+            ThermalProcessor.RequestUpdate();
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Thermal/CriticalThermalPercentage.cs
@@ -1,1 +1,53 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Flight.Readouts.Thermal
+{
+    using Extensions;
+    using Sections;
+
+    public class CriticalThermalPercentage : ReadoutModule
+    {
+        public CriticalThermalPercentage()
+        {
+            Name = "Critical Thermal Percentage";
+            Category = ReadoutCategory.GetCategory("Thermal");
+            HelpString = string.Empty;
+            IsDefault = true;
+        }
+
+        public override void Draw(SectionModule section)
+        {
+            if (ThermalProcessor.ShowDetails)
+            {
+                DrawLine(ThermalProcessor.CriticalTemperaturePercentage.ToPercent(), section.IsHud);
+            }
+        }
+
+        public override void Reset()
+        {
+            FlightEngineerCore.Instance.AddUpdatable(ThermalProcessor.Instance);
+        }
+
+        public override void Update()
+        {
+            ThermalProcessor.RequestUpdate();
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Thermal/HottestPart.cs
@@ -1,1 +1,52 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Flight.Readouts.Thermal
+{
+    using Sections;
+
+    public class HottestPart : ReadoutModule
+    {
+        public HottestPart()
+        {
+            Name = "Hottest Part";
+            Category = ReadoutCategory.GetCategory("Thermal");
+            HelpString = string.Empty;
+            IsDefault = true;
+        }
+
+        public override void Draw(SectionModule section)
+        {
+            if (ThermalProcessor.ShowDetails)
+            {
+                DrawLine(ThermalProcessor.HottestPartName, section.IsHud);
+            }
+        }
+
+        public override void Reset()
+        {
+            FlightEngineerCore.Instance.AddUpdatable(ThermalProcessor.Instance);
+        }
+
+        public override void Update()
+        {
+            ThermalProcessor.RequestUpdate();
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Thermal/HottestSkinTemperature.cs
@@ -1,1 +1,53 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Flight.Readouts.Thermal
+{
+    using Helpers;
+    using Sections;
+
+    public class HottestSkinTemperature : ReadoutModule
+    {
+        public HottestSkinTemperature()
+        {
+            Name = "Hottest Skin Temperature";
+            Category = ReadoutCategory.GetCategory("Thermal");
+            HelpString = string.Empty;
+            IsDefault = true;
+        }
+
+        public override void Draw(SectionModule section)
+        {
+            if (ThermalProcessor.ShowDetails)
+            {
+                DrawLine(Units.ToTemperature(ThermalProcessor.HottestSkinTemperature, ThermalProcessor.HottestSkinTemperatureMax), section.IsHud);
+            }
+        }
+
+        public override void Reset()
+        {
+            FlightEngineerCore.Instance.AddUpdatable(ThermalProcessor.Instance);
+        }
+
+        public override void Update()
+        {
+            ThermalProcessor.RequestUpdate();
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Thermal/HottestTemperature.cs
@@ -1,1 +1,53 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Flight.Readouts.Thermal
+{
+    using Helpers;
+    using Sections;
+
+    public class HottestTemperature : ReadoutModule
+    {
+        public HottestTemperature()
+        {
+            Name = "Hottest Temperature";
+            Category = ReadoutCategory.GetCategory("Thermal");
+            HelpString = string.Empty;
+            IsDefault = true;
+        }
+
+        public override void Draw(SectionModule section)
+        {
+            if (ThermalProcessor.ShowDetails)
+            {
+                DrawLine(Units.ToTemperature(ThermalProcessor.HottestTemperature, ThermalProcessor.HottestTemperatureMax), section.IsHud);
+            }
+        }
+
+        public override void Reset()
+        {
+            FlightEngineerCore.Instance.AddUpdatable(ThermalProcessor.Instance);
+        }
+
+        public override void Update()
+        {
+            ThermalProcessor.RequestUpdate();
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Thermal/InternalFlux.cs
@@ -1,1 +1,53 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Flight.Readouts.Thermal
+{
+    using Extensions;
+    using Sections;
+
+    public class InternalFlux : ReadoutModule
+    {
+        public InternalFlux()
+        {
+            Name = "Internal Flux";
+            Category = ReadoutCategory.GetCategory("Thermal");
+            HelpString = string.Empty;
+            IsDefault = true;
+        }
+
+        public override void Draw(SectionModule section)
+        {
+            if (ThermalProcessor.ShowDetails)
+            {
+                DrawLine(ThermalProcessor.InternalFlux.ToFlux(), section.IsHud);
+            }
+        }
+
+        public override void Reset()
+        {
+            FlightEngineerCore.Instance.AddUpdatable(ThermalProcessor.Instance);
+        }
+
+        public override void Update()
+        {
+            ThermalProcessor.RequestUpdate();
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Thermal/RadiationFlux.cs
@@ -1,1 +1,53 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Flight.Readouts.Thermal
+{
+    using Extensions;
+    using Sections;
+
+    public class RadiationFlux : ReadoutModule
+    {
+        public RadiationFlux()
+        {
+            Name = "Radiation Flux";
+            Category = ReadoutCategory.GetCategory("Thermal");
+            HelpString = string.Empty;
+            IsDefault = true;
+        }
+
+        public override void Draw(SectionModule section)
+        {
+            if (ThermalProcessor.ShowDetails)
+            {
+                DrawLine(ThermalProcessor.RadiationFlux.ToFlux(), section.IsHud);
+            }
+        }
+
+        public override void Reset()
+        {
+            FlightEngineerCore.Instance.AddUpdatable(ThermalProcessor.Instance);
+        }
+
+        public override void Update()
+        {
+            ThermalProcessor.RequestUpdate();
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Thermal/ThermalProcessor.cs
@@ -1,1 +1,161 @@
+// 
+//     Copyright (C) 2015 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+namespace KerbalEngineer.Flight.Readouts.Thermal
+{
+    using System;
+
+    public class ThermalProcessor : IUpdatable, IUpdateRequest
+    {
+        private static readonly ThermalProcessor instance = new ThermalProcessor();
+
+        static ThermalProcessor()
+        {
+            HottestTemperature = 0.0;
+            HottestTemperatureMax = 0.0;
+            HottestSkinTemperature = 0.0;
+            HottestSkinTemperatureMax = 0.0;
+            CoolestTemperature = 0.0;
+            CoolestTemperatureMax = 0.0;
+            CoolestSkinTemperature = 0.0;
+            CoolestSkinTemperatureMax = 0.0;
+            CriticalTemperature = 0.0;
+            CriticalTemperatureMax = 0.0;
+            CriticalSkinTemperature = 0.0;
+            CriticalSkinTemperatureMax = 0.0;
+            HottestPartName = string.Empty;
+            CoolestPartName = string.Empty;
+            CriticalPartName = string.Empty;
+        }
+
+        public static double ConvectionFlux { get; private set; }
+
+        public static string CoolestPartName { get; private set; }
+
+        public static double CoolestSkinTemperature { get; private set; }
+
+        public static double CoolestSkinTemperatureMax { get; private set; }
+
+        public static double CoolestTemperature { get; private set; }
+
+        public static double CoolestTemperatureMax { get; private set; }
+
+        public static string CriticalPartName { get; private set; }
+
+        public static double CriticalSkinTemperature { get; private set; }
+
+        public static double CriticalSkinTemperatureMax { get; private set; }
+
+        public static double CriticalTemperature { get; private set; }
+
+        public static double CriticalTemperatureMax { get; private set; }
+
+        public static double CriticalTemperaturePercentage { get; private set; }
+
+        public static string HottestPartName { get; private set; }
+
+        public static double HottestSkinTemperature { get; private set; }
+
+        public static double HottestSkinTemperatureMax { get; private set; }
+
+        public static double HottestTemperature { get; private set; }
+
+        public static double HottestTemperatureMax { get; private set; }
+
+        public static ThermalProcessor Instance
+        {
+            get
+            {
+                return instance;
+            }
+        }
+
+        public static double InternalFlux { get; private set; }
+
+        public static double RadiationFlux { get; private set; }
+
+        public static bool ShowDetails { get; private set; }
+
+        public void Update()
+        {
+            if (FlightGlobals.ActiveVessel.parts.Count == 0)
+            {
+                ShowDetails = false;
+                return;
+            }
+
+            ShowDetails = true;
+
+            ConvectionFlux = 0.0;
+            RadiationFlux = 0.0;
+            InternalFlux = 0.0;
+            HottestTemperature = 0.0;
+            HottestSkinTemperature = 0.0;
+            CoolestTemperature = double.MaxValue;
+            CoolestSkinTemperature = double.MaxValue;
+            CriticalTemperature = double.MaxValue;
+            CriticalSkinTemperature = double.MaxValue;
+            CriticalTemperaturePercentage = 0.0;
+            HottestPartName = string.Empty;
+            CoolestPartName = string.Empty;
+            CriticalPartName = string.Empty;
+
+            for (int i = 0; i < FlightGlobals.ActiveVessel.parts.Count; ++i)
+            {
+                Part part = FlightGlobals.ActiveVessel.parts[i];
+
+                ConvectionFlux = ConvectionFlux + part.thermalConvectionFlux;
+                RadiationFlux = RadiationFlux + part.thermalRadiationFlux;
+                InternalFlux = InternalFlux + part.thermalInternalFluxPrevious;
+
+                if (part.temperature > HottestTemperature || part.skinTemperature > HottestSkinTemperature)
+                {
+                    HottestTemperature = part.temperature;
+                    HottestTemperatureMax = part.maxTemp;
+                    HottestSkinTemperature = part.skinTemperature;
+                    HottestSkinTemperatureMax = part.skinMaxTemp;
+                    HottestPartName = part.partInfo.title;
+                }
+                if (part.temperature < CoolestTemperature || part.skinTemperature < CoolestSkinTemperature)
+                {
+                    CoolestTemperature = part.temperature;
+                    CoolestTemperatureMax = part.maxTemp;
+                    CoolestSkinTemperature = part.skinTemperature;
+                    CoolestSkinTemperatureMax = part.skinMaxTemp;
+                    CoolestPartName = part.partInfo.title;
+                }
+
+                if (part.temperature / part.maxTemp > CriticalTemperaturePercentage || part.skinTemperature / part.skinMaxTemp > CriticalTemperaturePercentage)
+                {
+                    CriticalTemperature = part.temperature;
+                    CriticalTemperatureMax = part.maxTemp;
+                    CriticalSkinTemperature = part.skinTemperature;
+                    CriticalSkinTemperatureMax = part.skinMaxTemp;
+                    CriticalTemperaturePercentage = Math.Max(part.temperature / part.maxTemp, part.skinTemperature / part.skinMaxTemp);
+                    CriticalPartName = part.partInfo.title;
+                }
+            }
+        }
+
+        public bool UpdateRequested { get; set; }
+
+        public static void RequestUpdate()
+        {
+            instance.UpdateRequested = true;
+        }
+    }
+}

--- a/KerbalEngineer/Flight/Readouts/Vessel/DeltaVStaged.cs
+++ b/KerbalEngineer/Flight/Readouts/Vessel/DeltaVStaged.cs
@@ -30,13 +30,6 @@
 {
     public class DeltaVStaged : ReadoutModule
     {
-        #region Fields
-
-        private int numberOfStages;
-        private bool showing;
-
-        #endregion
-
         #region Constructors
 
         public DeltaVStaged()

--- a/KerbalEngineer/Flight/Readouts/Vessel/IntakeAirDemandSupply.cs
+++ b/KerbalEngineer/Flight/Readouts/Vessel/IntakeAirDemandSupply.cs
@@ -55,20 +55,11 @@
             var demand = 0.0;
             foreach (var part in FlightGlobals.ActiveVessel.Parts)
             {
-                if (part.Modules.Contains("ModuleEngines"))
+                for (int i = 0; i < part.Modules.Count; i++)
                 {
-                    var engine = part.Modules["ModuleEngines"] as ModuleEngines;
-                    if (engine.isOperational)
-                    {
-                        demand += engine.propellants
-                            .Where(p => p.name == "IntakeAir")
-                            .Sum(p => p.currentRequirement);
-                    }
-                }
-                if (part.Modules.Contains("ModuleEnginesFX"))
-                {
-                    var engine = part.Modules["ModuleEnginesFX"] as ModuleEnginesFX;
-                    if (engine.isOperational)
+                    PartModule partmod = part.Modules[i];
+                    var engine = partmod as ModuleEngines;
+                    if (engine != null && engine.isOperational)
                     {
                         demand += engine.propellants
                             .Where(p => p.name == "IntakeAir")

--- a/KerbalEngineer/Flight/Readouts/Vessel/Mass.cs
+++ b/KerbalEngineer/Flight/Readouts/Vessel/Mass.cs
@@ -28,12 +28,6 @@
 {
     public class Mass : ReadoutModule
     {
-        #region Fields
-
-        private bool showing;
-
-        #endregion
-
         #region Constructors
 
         public Mass()

--- a/KerbalEngineer/Flight/Readouts/Vessel/PartCount.cs
+++ b/KerbalEngineer/Flight/Readouts/Vessel/PartCount.cs
@@ -46,7 +46,7 @@
         {
             if (SimulationProcessor.ShowDetails)
             {
-                this.DrawLine(Units.ConcatF(SimulationProcessor.LastStage.partCount, SimulationProcessor.LastStage.totalPartCount), section.IsHud);
+                this.DrawLine(Units.ConcatF(SimulationProcessor.LastStage.partCount, SimulationProcessor.LastStage.totalPartCount, 0), section.IsHud);
             }
         }
 

--- a/KerbalEngineer/Flight/Sections/SectionEditor.cs
+++ b/KerbalEngineer/Flight/Sections/SectionEditor.cs
@@ -215,15 +215,18 @@
             this.ParentSection.Name = GUILayout.TextField(this.ParentSection.Name, this.textStyle);
             var isShowingInControlBar = !string.IsNullOrEmpty(this.ParentSection.Abbreviation);
             this.ParentSection.Abbreviation = GUILayout.TextField(this.ParentSection.Abbreviation, this.textStyle, GUILayout.Width(75.0f));
+
+            ParentSection.IsHud = GUILayout.Toggle(this.ParentSection.IsHud, "HUD", this.readoutButtonStyle, GUILayout.Width(50.0f));
+            if (ParentSection.IsHud)
+            {
+                this.ParentSection.IsHudBackground = GUILayout.Toggle(this.ParentSection.IsHudBackground, "BG", this.readoutButtonStyle, GUILayout.Width(50.0f));
+            }
+
             if (this.ParentSection.IsCustom)
             {
                 if (isShowingInControlBar && string.IsNullOrEmpty(this.ParentSection.Abbreviation))
                 {
                     DisplayStack.Instance.RequestResize();
-                }
-                if (this.ParentSection.IsHud = GUILayout.Toggle(this.ParentSection.IsHud, "HUD", this.readoutButtonStyle, GUILayout.Width(50.0f)))
-                {
-                    this.ParentSection.IsHudBackground = GUILayout.Toggle(this.ParentSection.IsHudBackground, "BG", this.readoutButtonStyle, GUILayout.Width(50.0f));
                 }
 
                 if (GUILayout.Button("DELETE SECTION", this.readoutButtonStyle, GUILayout.Width(150.0f)))

--- a/KerbalEngineer/Flight/Sections/SectionLibrary.cs
+++ b/KerbalEngineer/Flight/Sections/SectionLibrary.cs
@@ -1,7 +1,7 @@
 // 
 //     Kerbal Engineer Redux
 // 
-//     Copyright (C) 2014 CYBUTEK
+//     Copyright (C) 2015 CYBUTEK
 // 
 //     This program is free software: you can redistribute it and/or modify
 //     it under the terms of the GNU General Public License as published by
@@ -19,22 +19,19 @@
 
 #region Using Directives
 
-using System.Collections.Generic;
-using System.Linq;
-
-using KerbalEngineer.Flight.Readouts;
-using KerbalEngineer.Settings;
-
-using UnityEngine;
-
 #endregion
 
 namespace KerbalEngineer.Flight.Sections
 {
+    using System.Collections.Generic;
+    using System.Linq;
+    using Readouts;
+    using Settings;
+    using UnityEngine;
+
     public static class SectionLibrary
     {
         #region Constructors
-
         /// <summary>
         ///     Sets up and populates the library with the stock sections on creation.
         /// </summary>
@@ -71,7 +68,15 @@
                 ReadoutModules = ReadoutLibrary.GetCategory(ReadoutCategory.GetCategory("Rendezvous")).Where(r => r.IsDefault).ToList()
             });
 
-            var hud1 = new SectionModule
+            CustomSections.Add(new SectionModule
+            {
+                Name = "THERMAL",
+                Abbreviation = "HEAT",
+                ReadoutModules = ReadoutLibrary.GetCategory(ReadoutCategory.GetCategory("Thermal")).Where(r => r.IsDefault).ToList(),
+                IsCustom = true
+            });
+            
+            SectionModule hud1 = new SectionModule
             {
                 Name = "HUD 1",
                 Abbreviation = "HUD 1",
@@ -90,7 +95,7 @@
             hud1.IsHud = true;
             CustomSections.Add(hud1);
 
-            var hud2 = new SectionModule
+            SectionModule hud2 = new SectionModule
             {
                 Name = "HUD 2",
                 Abbreviation = "HUD 2",
@@ -101,7 +106,8 @@
                     ReadoutLibrary.GetReadout("AltitudeTerrain"),
                     ReadoutLibrary.GetReadout("VerticalSpeed"),
                     ReadoutLibrary.GetReadout("HorizontalSpeed"),
-                    ReadoutLibrary.GetReadout("Biome")
+                    ReadoutLibrary.GetReadout("Biome"),
+                    ReadoutLibrary.GetReadout("MachNumber")
                 },
             };
             hud2.FloatingPositionX = Screen.width * 0.75f - (hud2.ReadoutModules.First().ContentWidth * 0.5f);
@@ -109,11 +115,9 @@
             hud2.IsHud = true;
             CustomSections.Add(hud2);
         }
-
         #endregion
 
         #region Properties
-
         /// <summary>
         ///     Gets and sets a list of custom sections.
         /// </summary>
@@ -133,13 +137,11 @@
         ///     Gets and sets a list of stock sections
         /// </summary>
         public static List<SectionModule> StockSections { get; set; }
-
         #endregion
 
         #region Updating
 
         #region Methods: public
-
         /// <summary>
         ///     Fixed update all of the sections.
         /// </summary>
@@ -160,17 +162,15 @@
             UpdateSections(StockSections);
             UpdateSections(CustomSections);
         }
-
         #endregion
 
         #region Methods: private
-
         /// <summary>
         ///     Fixed updates a list of sections.
         /// </summary>
         private static void FixedUpdateSections(IEnumerable<SectionModule> sections)
         {
-            foreach (var section in sections)
+            foreach (SectionModule section in sections)
             {
                 if (section.IsVisible)
                 {
@@ -184,13 +184,13 @@
         /// </summary>
         private static void UpdateSections(IEnumerable<SectionModule> sections)
         {
-            foreach (var section in sections)
+            foreach (SectionModule section in sections)
             {
                 if (section.IsVisible)
                 {
                     if (!section.IsFloating)
                     {
-                        foreach (var readout in section.ReadoutModules)
+                        foreach (ReadoutModule readout in section.ReadoutModules)
                         {
                             if (readout.ResizeRequested)
                             {
@@ -203,7 +203,7 @@
                     }
                     else
                     {
-                        foreach (var readout in section.ReadoutModules)
+                        foreach (ReadoutModule readout in section.ReadoutModules)
                         {
                             if (readout.ResizeRequested)
                             {
@@ -218,13 +218,11 @@
                 NumberOfSections++;
             }
         }
-
         #endregion
 
         #endregion
 
         #region Saving and Loading
-
         /// <summary>
         ///     Loads the state of all stored sections.
         /// </summary>
@@ -243,11 +241,11 @@
                 }
             });
 
-            var handler = SettingHandler.Load("SectionLibrary.xml", new[] {typeof(List<SectionModule>)});
+            SettingHandler handler = SettingHandler.Load("SectionLibrary.xml", new[] { typeof(List<SectionModule>) });
             StockSections = handler.Get("StockSections", StockSections);
             CustomSections = handler.Get("CustomSections", CustomSections);
 
-            foreach (var section in GetAllSections())
+            foreach (SectionModule section in GetAllSections())
             {
                 section.ClearNullReadouts();
             }
@@ -258,22 +256,20 @@
         /// </summary>
         public static void Save()
         {
-            var handler = new SettingHandler();
+            SettingHandler handler = new SettingHandler();
             handler.Set("StockSections", StockSections);
             handler.Set("CustomSections", CustomSections);
             handler.Save("SectionLibrary.xml");
         }
-
         #endregion
 
         #region Methods
-
         /// <summary>
         ///     Gets a list containing all section modules.
         /// </summary>
         public static List<SectionModule> GetAllSections()
         {
-            var sections = new List<SectionModule>();
+            List<SectionModule> sections = new List<SectionModule>();
             sections.AddRange(StockSections);
             sections.AddRange(CustomSections);
             return sections;
@@ -326,7 +322,6 @@
         {
             return StockSections.Remove(GetStockSection(name));
         }
-
         #endregion
     }
 }

--- a/KerbalEngineer/Flight/Sections/SectionWindow.cs
+++ b/KerbalEngineer/Flight/Sections/SectionWindow.cs
@@ -134,7 +134,11 @@
                                                    (!this.ParentSection.IsHud || this.ParentSection.IsEditorVisible) ? this.windowStyle
                                                        : this.ParentSection.IsHudBackground && this.ParentSection.LineCount > 0
                                                            ? this.hudWindowBgStyle
-                                                           : this.hudWindowStyle).ClampToScreen();
+                                                           : this.hudWindowStyle);
+
+            windowPosition = (ParentSection.IsHud) ? windowPosition.ClampInsideScreen() : windowPosition.ClampToScreen();
+
+
             this.ParentSection.FloatingPositionX = this.windowPosition.x;
             this.ParentSection.FloatingPositionY = this.windowPosition.y;
         }

--- a/KerbalEngineer/Helpers/AngleHelper.cs
+++ b/KerbalEngineer/Helpers/AngleHelper.cs
@@ -17,21 +17,30 @@
 //     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // 
 
-#region Using Directives
-
-using UnityEngine;
-
-#endregion
-
 namespace KerbalEngineer.Helpers
 {
+    using UnityEngine;
+
     public static class AngleHelper
     {
-        #region Methods: public
+        public static double Clamp180(double angle)
+        {
+            angle = Clamp360(angle);
+            if (angle > 180.0)
+            {
+                angle = angle - 360.0;
+            }
+            return angle;
+        }
 
-        public static double Clamp360(double value)
+        public static double Clamp360(double angle)
         {
-            return ClampBetween(value, 0.0, 360.0);
+            angle = angle % 360.0;
+            if (angle < 0.0)
+            {
+                angle = angle + 360.0;
+            }
+            return angle;
         }
 
         public static double ClampBetween(double value, double minimum, double maximum)
@@ -51,8 +60,8 @@
 
         public static double GetAngleBetweenVectors(Vector3d left, Vector3d right)
         {
-            var angle = Vector3d.Angle(left, right);
-            var rotated = QuaternionD.AngleAxis(90.0, Vector3d.forward) * right;
+            double angle = Vector3d.Angle(left, right);
+            Vector3d rotated = QuaternionD.AngleAxis(90.0, Vector3d.forward) * right;
 
             if (Vector3d.Angle(rotated, left) > 90.0)
             {
@@ -60,7 +69,5 @@
             }
             return angle;
         }
-
-        #endregion
     }
 }

--- a/KerbalEngineer/Helpers/ForceAccumulator.cs
+++ b/KerbalEngineer/Helpers/ForceAccumulator.cs
@@ -19,19 +19,39 @@
 
 using System;
 using System.Collections.Generic;
+using KerbalEngineer.VesselSimulator;
 
 namespace KerbalEngineer
 {
     // a (force, application point) tuple
     public class AppliedForce
     {
+        private static readonly Pool<AppliedForce> pool = new Pool<AppliedForce>(Create, Reset);
+
         public Vector3d vector;
         public Vector3d applicationPoint;
 
-        public AppliedForce(Vector3d vector, Vector3d applicationPoint) {
-            this.vector = vector;
-            this.applicationPoint = applicationPoint;
+        static private AppliedForce Create()
+        {
+            return new AppliedForce();
         }
+
+        static private void Reset(AppliedForce appliedForce) { }
+
+        static public AppliedForce New(Vector3d vector, Vector3d applicationPoint)
+        {
+            AppliedForce force = pool.Borrow();
+            force.vector = vector;
+            force.applicationPoint = applicationPoint;
+            return force;
+        }
+
+        public void Release()
+        {
+            pool.Release(this);
+        }
+
+
     }
 
 	// This class was mostly adapted from FARCenterQuery, part of FAR, by ferram4, GPLv3
@@ -47,7 +67,7 @@
 	// some amount of residual torque. The line with the least amount of residual torque is chosen.
 	public class ForceAccumulator
 	{
-		// Total force.
+	    // Total force.
 		private Vector3d totalForce = Vector3d.zero;
 		// Torque needed to compensate if force were applied at origin.
 		private Vector3d totalZeroOriginTorque = Vector3d.zero;

--- a/KerbalEngineer/Helpers/Pool.cs
+++ b/KerbalEngineer/Helpers/Pool.cs
@@ -1,61 +1,53 @@
-namespace KerbalEngineer.VesselSimulator
+using System.Collections.Generic;
+
+namespace KerbalEngineer
 {
-    using System.Collections.Generic;
+    /// <summary>
+    ///     Pool of object
+    /// </summary>
+    public class Pool<T> {
+        
+        private readonly Stack<T> values = new Stack<T>();
 
-    public class Pool<T> where T : new()
-    {
-        private static List<T> available = new List<T>();
-        private static List<T> inUse = new List<T>();
+        private readonly CreateDelegate<T> create;
+        private readonly ResetDelegate<T> reset;
 
-        public static int PoolCount
-        {
-            get
-            {
-                return available.Count + inUse.Count;
+        public delegate R CreateDelegate<out R>();
+        public delegate void ResetDelegate<in T1>(T1 a);
+        
+        /// <summary>
+        ///     Creates an empty pool with the specified object creation and reset delegates.
+        /// </summary>
+        public Pool(CreateDelegate<T> create, ResetDelegate<T> reset) {
+            this.create = create;
+            this.reset = reset;
+        }
+
+        /// <summary>
+        ///     Borrows an object from the pool.
+        /// </summary>
+        public T Borrow() {
+            lock (values) {
+                return values.Count > 0 ? values.Pop() : create();
             }
         }
-
-        public static T GetPoolObject()
-        {
-            T obj;
-            if (available.Count > 0)
-            {
-                obj = available[0];
-                available.RemoveAt(0);
-            }
-            else
-            {
-                obj = new T();
-            }
-
-            inUse.Add(obj);
-            return obj;
-        }
-
-        public static void Release(T obj)
-        {
-            if (inUse.Contains(obj))
-            {
-                inUse.Remove(obj);
-                available.Add(obj);
+        
+        /// <summary>
+        ///     Release an object, reset it and returns it to the pool.
+        /// </summary>
+        public void Release(T value) {
+            reset(value);
+            lock (values) {
+                values.Push(value);
             }
         }
-
-        public static void Release(List<T> objList)
+        
+        /// <summary>
+        ///     Current size of the pool.
+        /// </summary>
+        public int Count()
         {
-            for (int i = 0; i < objList.Count; ++i)
-            {
-                Release(objList[i]);
-            }
-        }
-
-        public static void ReleaseAll()
-        {
-            for (int i = 0; i < inUse.Count; ++i)
-            {
-                available.Add(inUse[i]);
-            }
-            inUse.Clear();
+            return values.Count;
         }
     }
 }

--- a/KerbalEngineer/Helpers/Units.cs
+++ b/KerbalEngineer/Helpers/Units.cs
@@ -1,7 +1,7 @@
 // 
 //     Kerbal Engineer Redux
 // 
-//     Copyright (C) 2014 CYBUTEK
+//     Copyright (C) 2015 CYBUTEK
 // 
 //     This program is free software: you can redistribute it and/or modify
 //     it under the terms of the GNU General Public License as published by
@@ -19,14 +19,10 @@
 
 namespace KerbalEngineer.Helpers
 {
-    #region Using Directives
     using System;
-
-    #endregion
 
     public static class Units
     {
-        #region Methods
         public const double GRAVITY = 9.80665;
 
         public static string Concat(int value1, int value2)
@@ -85,6 +81,17 @@
         public static string ToAngle(double value, int decimals = 5)
         {
             return value.ToString("F" + decimals) + "°";
+        }
+
+        public static string ToAngleDMS(double value)
+        {
+            double absAngle = Math.Abs(value);
+            int deg = (int)Math.Floor(absAngle);
+            double rem = absAngle - deg;
+            int min = (int)Math.Floor(rem * 60);
+            rem -= ((double)min / 60);
+            int sec = (int)Math.Floor(rem * 3600);
+            return String.Format("{0:0}° {1:00}' {2:00}\"", deg, min, sec);
         }
 
         public static string ToDistance(double value, int decimals = 1)
@@ -116,6 +123,11 @@
             return value.ToString("N" + decimals) + "Mm";
         }
 
+        public static string ToFlux(double value)
+        {
+            return value.ToString("#,0.00") + "W";
+        }
+
         public static string ToForce(double value)
         {
             return value.ToString((value < 100000.0) ? (value < 10000.0) ? (value < 100.0) ? (Math.Abs(value) < Double.Epsilon) ? "N0" : "N3" : "N2" : "N1" : "N0") + "kN";
@@ -128,6 +140,11 @@
             return value1.ToString(format1) + " / " + value2.ToString(format2) + "kN";
         }
 
+        public static string ToMach(double value)
+        {
+            return value.ToString("0.00") + "Ma";
+        }
+
         public static string ToMass(double value, int decimals = 0)
         {
             if (value >= 1000.0)
@@ -171,6 +188,16 @@
             return value.ToString("N" + decimals) + "m/s";
         }
 
+        public static string ToTemperature(double value)
+        {
+            return value.ToString("#,0") + "K";
+        }
+
+        public static string ToTemperature(double value1, double value2)
+        {
+            return value1.ToString("#,0") + " / " + value2.ToString("#,0") + "K";
+        }
+
         public static string ToTime(double value)
         {
             return TimeFormatter.ConvertToString(value);
@@ -180,6 +207,5 @@
         {
             return value.ToString((value < 100.0) ? (Math.Abs(value) < Double.Epsilon) ? "N0" : "N1" : "N0") + "kNm";
         }
-        #endregion
     }
 }

--- a/KerbalEngineer/KerbalEngineer.csproj
+++ b/KerbalEngineer/KerbalEngineer.csproj
@@ -48,6 +48,7 @@
     <Compile Include="Editor\ResourceInfoItem.cs" />
     <Compile Include="Extensions\FloatExtensions.cs" />
     <Compile Include="Extensions\OrbitExtensions.cs" />
+    <Compile Include="Extensions\StringExtensions.cs" />
     <Compile Include="Flight\ActionMenuGui.cs" />
     <Compile Include="Flight\Presets\Preset.cs" />
     <Compile Include="Flight\Readouts\Miscellaneous\SystemTime.cs" />
@@ -70,11 +71,21 @@
     <Compile Include="Flight\Readouts\Orbital\ManoeuvreNode\NodeAngleToPrograde.cs" />
     <Compile Include="Flight\Readouts\Orbital\ManoeuvreNode\NodeTotalDeltaV.cs" />
     <Compile Include="Flight\Readouts\Orbital\ManoeuvreNode\NodeProgradeDeltaV.cs" />
+    <Compile Include="Flight\Readouts\Orbital\ManoeuvreNode\PostBurnApoapsis.cs" />
+    <Compile Include="Flight\Readouts\Orbital\ManoeuvreNode\PostBurnPeriapsis.cs" />
     <Compile Include="Flight\Readouts\Orbital\MeanAnomalyAtEpoc.cs" />
     <Compile Include="Flight\Readouts\Orbital\MeanAnomaly.cs" />
     <Compile Include="Flight\Readouts\Orbital\EccentricAnomaly.cs" />
     <Compile Include="Flight\Readouts\Orbital\ArgumentOfPeriapsis.cs" />
     <Compile Include="Flight\Readouts\Orbital\CurrentSoi.cs" />
+    <Compile Include="Flight\Readouts\Orbital\SemiMajorAxis.cs">
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="Flight\Readouts\Orbital\SpeedAtApoapsis.cs" />
+    <Compile Include="Flight\Readouts\Orbital\SpeedAtPeriapsis.cs">
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="Flight\Readouts\Orbital\TimeToAtmosphere.cs" />
     <Compile Include="Flight\Readouts\Orbital\TrueAnomaly.cs" />
     <Compile Include="Flight\Readouts\Orbital\TimeToEquatorialAscendingNode.cs" />
     <Compile Include="Flight\Readouts\Orbital\TimeToEquatorialDescendingNode.cs" />
@@ -89,6 +100,21 @@
     <Compile Include="Flight\Readouts\Surface\Biome.cs" />
     <Compile Include="Flight\Readouts\Surface\HorizontalAcceleration.cs" />
     <Compile Include="Flight\Readouts\Surface\VerticalAcceleration.cs" />
+    <Compile Include="Flight\Readouts\Surface\MachNumber.cs" />
+    <Compile Include="Flight\Readouts\Thermal\CoolestSkinTemperature.cs" />
+    <Compile Include="Flight\Readouts\Thermal\CriticalPart.cs" />
+    <Compile Include="Flight\Readouts\Thermal\CoolestPart.cs" />
+    <Compile Include="Flight\Readouts\Thermal\CoolestTemperature.cs" />
+    <Compile Include="Flight\Readouts\Thermal\CriticalThermalPercentage.cs" />
+    <Compile Include="Flight\Readouts\Thermal\CriticalSkinTemperature.cs" />
+    <Compile Include="Flight\Readouts\Thermal\CriticalTemperature.cs" />
+    <Compile Include="Flight\Readouts\Thermal\HottestSkinTemperature.cs" />
+    <Compile Include="Flight\Readouts\Thermal\InternalFlux.cs" />
+    <Compile Include="Flight\Readouts\Thermal\RadiationFlux.cs" />
+    <Compile Include="Flight\Readouts\Thermal\ConvectionFlux.cs" />
+    <Compile Include="Flight\Readouts\Thermal\HottestTemperature.cs" />
+    <Compile Include="Flight\Readouts\Thermal\HottestPart.cs" />
+    <Compile Include="Flight\Readouts\Thermal\ThermalProcessor.cs" />
     <Compile Include="Flight\Readouts\Vessel\AttitudeProcessor.cs" />
     <Compile Include="Flight\Readouts\Vessel\DeltaVCurrentTotal.cs" />
     <Compile Include="Flight\Readouts\Vessel\PitchRate.cs" />
@@ -145,7 +171,6 @@
     <Compile Include="Flight\Readouts\Orbital\OrbitalPeriod.cs" />
     <Compile Include="Flight\Readouts\Orbital\OrbitalSpeed.cs" />
     <Compile Include="Flight\Readouts\Orbital\PeriapsisHeight.cs" />
-    <Compile Include="Flight\Readouts\Orbital\SemiMajorAxis.cs" />
     <Compile Include="Flight\Readouts\Orbital\SemiMinorAxis.cs" />
     <Compile Include="Flight\Readouts\Orbital\TimeToApoapsis.cs" />
     <Compile Include="Flight\Readouts\Orbital\TimeToPeriapsis.cs" />
@@ -224,6 +249,7 @@
       <Private>False</Private>
     </Reference>
   </ItemGroup>
+  <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <Target Name="PostBuildMacros">
     <GetAssemblyIdentity AssemblyFiles="$(TargetPath)">

--- a/KerbalEngineer/LogMsg.cs
+++ b/KerbalEngineer/LogMsg.cs
@@ -15,7 +15,8 @@
 
         public void Flush()
         {
-            MonoBehaviour.print(this.buf);
+            if (this.buf.Length > 0)
+                MonoBehaviour.print(this.buf);
             this.buf.Length = 0;
         }
     }

--- a/KerbalEngineer/Properties/AssemblyInfo.cs
+++ b/KerbalEngineer/Properties/AssemblyInfo.cs
@@ -32,5 +32,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion(KerbalEngineer.EngineerGlobals.AssemblyVersion)]
+[assembly: AssemblyVersion(KerbalEngineer.EngineerGlobals.ASSEMBLY_VERSION)]
 

--- a/KerbalEngineer/VesselSimulator/AttachNodeSim.cs
+++ b/KerbalEngineer/VesselSimulator/AttachNodeSim.cs
@@ -26,11 +26,38 @@
     using System;
     using System.Text;
 
-    internal class AttachNodeSim : Pool<AttachNodeSim>
+    internal class AttachNodeSim
     {
+
+        private static readonly Pool<AttachNodeSim> pool = new Pool<AttachNodeSim>(Create, Reset);
+
         public PartSim attachedPartSim;
         public String id;
         public AttachNode.NodeType nodeType;
+
+        private static AttachNodeSim Create()
+        {
+            return new AttachNodeSim();
+        }
+
+        public static AttachNodeSim New(PartSim partSim, String newId, AttachNode.NodeType newNodeType)
+        {
+            AttachNodeSim nodeSim = pool.Borrow();
+
+            nodeSim.attachedPartSim = partSim;
+            nodeSim.nodeType = newNodeType;
+            nodeSim.id = newId;
+
+            return nodeSim;
+        }
+
+        static private void Reset(AttachNodeSim attachNodeSim) { }
+
+
+        public void Release()
+        {
+            pool.Release(this);
+        }
 
         public void DumpToBuffer(StringBuilder buffer)
         {
@@ -49,14 +76,5 @@
             buffer.Append(":");
             buffer.Append(id);
         }
-
-        public AttachNodeSim Initialise(PartSim partSim, String newId, AttachNode.NodeType newNodeType)
-        {
-            attachedPartSim = partSim;
-            nodeType = newNodeType;
-            id = newId;
-
-            return this;
-        }
     }
 }

--- a/KerbalEngineer/VesselSimulator/EngineSim.cs
+++ b/KerbalEngineer/VesselSimulator/EngineSim.cs
@@ -26,99 +26,149 @@
     using Helpers;
     using UnityEngine;
 
-    public class EngineSim : Pool<EngineSim>
+    public class EngineSim
     {
-        public double actualThrust = 0.0;
-        public List<AppliedForce> appliedForces = new List<AppliedForce>();
+        private static readonly Pool<EngineSim> pool = new Pool<EngineSim>(Create, Reset);
+
+        private readonly ResourceContainer resourceConsumptions = new ResourceContainer();
+        private readonly ResourceContainer resourceFlowModes = new ResourceContainer();
+
+        public double actualThrust = 0;
         public bool isActive = false;
         public double isp = 0;
         public PartSim partSim;
+        public List<AppliedForce> appliedForces = new List<AppliedForce>();
         public float maxMach;
 
         public double thrust = 0;
 
         // Add thrust vector to account for directional losses
         public Vector3 thrustVec;
-        private readonly ResourceContainer resourceConsumptions = new ResourceContainer();
-
-        public EngineSim Initialise(PartSim theEngine,
-            double atmosphere,
-            float machNumber,
-            float maxFuelFlow,
-            float minFuelFlow,
-            float thrustPercentage,
-            Vector3 vecThrust,
-            FloatCurve atmosphereCurve,
-            bool atmChangeFlow,
-            FloatCurve atmCurve,
-            FloatCurve velCurve,
-            float currentThrottle,
-            bool throttleLocked,
-            List<Propellant> propellants,
-            bool active,
-            float resultingThrust,
-            List<Transform> thrustTransforms)
-        {
-            StringBuilder buffer = null;
-
-            isp = 0.0;
-            maxMach = 0.0f;
-            actualThrust = 0.0;
-            partSim = theEngine;
-            isActive = active;
-            thrustVec = vecThrust;
-            resourceConsumptions.Reset();
-            appliedForces.Clear();
+
+        private static EngineSim Create()
+        {
+            return new EngineSim();
+        }
+
+        private static void Reset(EngineSim engineSim)
+        {
+            engineSim.resourceConsumptions.Reset();
+            engineSim.resourceFlowModes.Reset();
+            engineSim.actualThrust = 0;
+            engineSim.isActive = false;
+            engineSim.isp = 0;
+            for (int i = 0; i < engineSim.appliedForces.Count; i++)
+            {
+                engineSim.appliedForces[i].Release();
+            }
+            engineSim.appliedForces.Clear();
+            engineSim.thrust = 0;
+            engineSim.maxMach = 0f;
+        }
+
+        public void Release()
+        {
+            pool.Release(this);
+        }
+
+        public static EngineSim New(PartSim theEngine,
+                         double atmosphere,
+                         float machNumber,
+                         float maxFuelFlow,
+                         float minFuelFlow,
+                         float thrustPercentage,
+                         Vector3 vecThrust,
+                         FloatCurve atmosphereCurve,
+                         bool atmChangeFlow,
+                         FloatCurve atmCurve,
+                         FloatCurve velCurve,
+                         float currentThrottle,
+                         float IspG,
+                         bool throttleLocked,
+                         List<Propellant> propellants,
+                         bool active,
+                         float resultingThrust,
+                         List<Transform> thrustTransforms,
+                        LogMsg log)
+        {
+            EngineSim engineSim = pool.Borrow();
+
+            engineSim.isp = 0.0;
+            engineSim.maxMach = 0.0f;
+            engineSim.actualThrust = 0.0;
+            engineSim.partSim = theEngine;
+            engineSim.isActive = active;
+            engineSim.thrustVec = vecThrust;
+            engineSim.resourceConsumptions.Reset();
+            engineSim.resourceFlowModes.Reset();
+            engineSim.appliedForces.Clear();
 
             double flowRate = 0.0;
-            if (partSim.hasVessel)
-            {
-                float flowModifier = GetFlowModifier(atmChangeFlow, atmCurve, partSim.part.atmDensity, velCurve, machNumber, ref maxMach);
-                isp = atmosphereCurve.Evaluate((float)atmosphere);
-                thrust = GetThrust(Mathf.Lerp(minFuelFlow, maxFuelFlow, GetThrustPercent(thrustPercentage)) * flowModifier, isp);
-                actualThrust = isActive ? resultingThrust : 0.0;
+            if (engineSim.partSim.hasVessel)
+            {
+                if (log != null) log.buf.AppendLine("hasVessel is true"); 
+
+                float flowModifier = GetFlowModifier(atmChangeFlow, atmCurve, engineSim.partSim.part.atmDensity, velCurve, machNumber, ref engineSim.maxMach);
+                engineSim.isp = atmosphereCurve.Evaluate((float)atmosphere);
+                engineSim.thrust = GetThrust(Mathf.Lerp(minFuelFlow, maxFuelFlow, GetThrustPercent(thrustPercentage)) * flowModifier, engineSim.isp);
+                engineSim.actualThrust = engineSim.isActive ? resultingThrust : 0.0;
+                if (log != null)
+                {
+                    log.buf.AppendFormat("flowMod = {0:g6}\n", flowModifier);
+                    log.buf.AppendFormat("isp     = {0:g6}\n", engineSim.isp);
+                    log.buf.AppendFormat("thrust  = {0:g6}\n", engineSim.thrust);
+                    log.buf.AppendFormat("actual  = {0:g6}\n", engineSim.actualThrust);
+                }
 
                 if (throttleLocked)
                 {
-                    flowRate = GetFlowRate(thrust, isp);
+                    if (log != null) log.buf.AppendLine("throttleLocked is true, using thrust for flowRate");
+                    flowRate = GetFlowRate(engineSim.thrust, engineSim.isp);
                 }
                 else
                 {
-                    if (currentThrottle > 0.0f && partSim.isLanded == false)
+                    if (currentThrottle > 0.0f && engineSim.partSim.isLanded == false)
                     {
-                        flowRate = GetFlowRate(actualThrust, isp);
+                        if (log != null) log.buf.AppendLine("throttled up and not landed, using actualThrust for flowRate");
+                        flowRate = GetFlowRate(engineSim.actualThrust, engineSim.isp);
                     }
                     else
                     {
-                        flowRate = GetFlowRate(thrust, isp);
+                        if (log != null) log.buf.AppendLine("throttled down or landed, using thrust for flowRate");
+                        flowRate = GetFlowRate(engineSim.thrust, engineSim.isp);
                     }
                 }
             }
             else
             {
-                float flowModifier = GetFlowModifier(atmChangeFlow, atmCurve, CelestialBodies.SelectedBody.GetDensity(BuildAdvanced.Altitude), velCurve, machNumber, ref maxMach);
-                isp = atmosphereCurve.Evaluate((float)atmosphere);
-                thrust = GetThrust(Mathf.Lerp(minFuelFlow, maxFuelFlow, GetThrustPercent(thrustPercentage)) * flowModifier, isp);
-                flowRate = GetFlowRate(thrust, isp);
-            }
-
-            if (SimManager.logOutput)
-            {
-                buffer = new StringBuilder(1024);
-                buffer.AppendFormat("flowRate = {0:g6}\n", flowRate);
-            }
+                if (log != null) log.buf.AppendLine("hasVessel is false");
+                float flowModifier = GetFlowModifier(atmChangeFlow, atmCurve, CelestialBodies.SelectedBody.GetDensity(BuildAdvanced.Altitude), velCurve, machNumber, ref engineSim.maxMach);
+                engineSim.isp = atmosphereCurve.Evaluate((float)atmosphere);
+                engineSim.thrust = GetThrust(Mathf.Lerp(minFuelFlow, maxFuelFlow, GetThrustPercent(thrustPercentage)) * flowModifier, engineSim.isp);
+                engineSim.actualThrust = 0d;
+                if (log != null)
+                {
+                    log.buf.AppendFormat("flowMod = {0:g6}\n", flowModifier);
+                    log.buf.AppendFormat("isp     = {0:g6}\n", engineSim.isp);
+                    log.buf.AppendFormat("thrust  = {0:g6}\n", engineSim.thrust);
+                    log.buf.AppendFormat("actual  = {0:g6}\n", engineSim.actualThrust);
+                }
+
+                if (log != null) log.buf.AppendLine("no vessel, using thrust for flowRate");
+                flowRate = GetFlowRate(engineSim.thrust, engineSim.isp);
+            }
+
+            if (log != null) log.buf.AppendFormat("flowRate = {0:g6}\n", flowRate);
 
             float flowMass = 0f;
             for (int i = 0; i < propellants.Count; ++i)
             {
                 Propellant propellant = propellants[i];
-                flowMass += propellant.ratio * ResourceContainer.GetResourceDensity(propellant.id);
-            }
-
-            if (SimManager.logOutput)
-            {
-                buffer.AppendFormat("flowMass = {0:g6}\n", flowMass);
-            }
+                if (!propellant.ignoreForIsp)
+                    flowMass += propellant.ratio * ResourceContainer.GetResourceDensity(propellant.id);
+            }
+
+            if (log != null) log.buf.AppendFormat("flowMass = {0:g6}\n", flowMass);
 
             for (int i = 0; i < propellants.Count; ++i)
             {
@@ -130,29 +180,28 @@
                 }
 
                 double consumptionRate = propellant.ratio * flowRate / flowMass;
-                if (SimManager.logOutput)
-                {
-                    buffer.AppendFormat("Add consumption({0}, {1}:{2:d}) = {3:g6}\n", ResourceContainer.GetResourceName(propellant.id), theEngine.name, theEngine.partId, consumptionRate);
-                }
-                resourceConsumptions.Add(propellant.id, consumptionRate);
-            }
-
-            if (SimManager.logOutput)
-            {
-                MonoBehaviour.print(buffer);
-            }
-
-            appliedForces.Clear();
-            double thrustPerThrustTransform = thrust / thrustTransforms.Count;
-            for (int i = 0; i < thrustTransforms.Count; ++i)
+                if (log != null) log.buf.AppendFormat(
+                        "Add consumption({0}, {1}:{2:d}) = {3:g6}\n",
+                        ResourceContainer.GetResourceName(propellant.id),
+                        theEngine.name,
+                        theEngine.partId,
+                        consumptionRate);
+                engineSim.resourceConsumptions.Add(propellant.id, consumptionRate);
+                engineSim.resourceFlowModes.Add(propellant.id, (double)propellant.GetFlowMode());
+            }
+
+            double thrustPerThrustTransform = engineSim.thrust / thrustTransforms.Count;
+            for (int i = 0; i < thrustTransforms.Count; i++)
             {
                 Transform thrustTransform = thrustTransforms[i];
                 Vector3d direction = thrustTransform.forward.normalized;
                 Vector3d position = thrustTransform.position;
-                appliedForces.Add(new AppliedForce(direction * thrustPerThrustTransform, position));
-            }
-
-            return this;
+
+                AppliedForce appliedForce = AppliedForce.New(direction * thrustPerThrustTransform, position);
+                engineSim.appliedForces.Add(appliedForce);
+            }
+
+            return engineSim;
         }
 
         public ResourceContainer ResourceConsumptions
@@ -217,53 +266,67 @@
             buffer.AppendFormat("[thrust = {0:g6}, actual = {1:g6}, isp = {2:g6}\n", thrust, actualThrust, isp);
         }
 
+        // A dictionary to hold a set of parts for each resource
+        Dictionary<int, HashSet<PartSim>> sourcePartSets = new Dictionary<int, HashSet<PartSim>>();
+
+        Dictionary<int, HashSet<PartSim>> stagePartSets = new Dictionary<int, HashSet<PartSim>>();
+
+        HashSet<PartSim> visited = new HashSet<PartSim>();
+
         public bool SetResourceDrains(List<PartSim> allParts, List<PartSim> allFuelLines, HashSet<PartSim> drainingParts)
         {
             LogMsg log = null;
-
-            // A dictionary to hold a set of parts for each resource
-            Dictionary<int, HashSet<PartSim>> sourcePartSets = new Dictionary<int, HashSet<PartSim>>();
-
-            for (int i = 0; i < resourceConsumptions.Types.Count; ++i)
-            {
-                int type = resourceConsumptions.Types[i];
-
-                HashSet<PartSim> sourcePartSet = null;
-                switch (ResourceContainer.GetResourceFlowMode(type))
+            
+            foreach (HashSet<PartSim> sourcePartSet in sourcePartSets.Values)
+            {
+                sourcePartSet.Clear();
+            }
+
+            for (int index = 0; index < this.resourceConsumptions.Types.Count; index++)
+            {
+                int type = this.resourceConsumptions.Types[index];
+
+                HashSet<PartSim> sourcePartSet;
+                if (!sourcePartSets.TryGetValue(type, out sourcePartSet))
+                {
+                    sourcePartSet = new HashSet<PartSim>();
+                    sourcePartSets.Add(type, sourcePartSet);
+                }
+
+                switch ((ResourceFlowMode)this.resourceFlowModes[type])
                 {
                     case ResourceFlowMode.NO_FLOW:
                         if (partSim.resources[type] > SimManager.RESOURCE_MIN && partSim.resourceFlowStates[type] != 0)
                         {
-                            sourcePartSet = new HashSet<PartSim>();
+                            //sourcePartSet = new HashSet<PartSim>();
                             //MonoBehaviour.print("SetResourceDrains(" + name + ":" + partId + ") setting sources to just this");
                             sourcePartSet.Add(partSim);
                         }
                         break;
 
                     case ResourceFlowMode.ALL_VESSEL:
-                        for (int j = 0; j < allParts.Count; ++j)
-                        {
-                            PartSim aPartSim = allParts[j];
+                        for (int i = 0; i < allParts.Count; i++)
+                        {
+                            PartSim aPartSim = allParts[i];
                             if (aPartSim.resources[type] > SimManager.RESOURCE_MIN && aPartSim.resourceFlowStates[type] != 0)
                             {
-                                if (sourcePartSet == null)
-                                {
-                                    sourcePartSet = new HashSet<PartSim>();
-                                }
-
                                 sourcePartSet.Add(aPartSim);
                             }
                         }
                         break;
 
                     case ResourceFlowMode.STAGE_PRIORITY_FLOW:
-                        Dictionary<int, HashSet<PartSim>> stagePartSets = new Dictionary<int, HashSet<PartSim>>();
-                        int maxStage = -1;
+
+                        foreach (HashSet<PartSim> stagePartSet in stagePartSets.Values)
+                        {
+                            stagePartSet.Clear();
+                        }
+                        var maxStage = -1;
 
                         //Logger.Log(type);
-                        for (int j = 0; j < allParts.Count; ++j)
-                        {
-                            PartSim aPartSim = allParts[j];
+                        for (int i = 0; i < allParts.Count; i++)
+                        {
+                            var aPartSim = allParts[i];
                             if (aPartSim.resources[type] <= SimManager.RESOURCE_MIN || aPartSim.resourceFlowStates[type] == 0)
                             {
                                 continue;
@@ -294,14 +357,14 @@
                         break;
 
                     case ResourceFlowMode.STACK_PRIORITY_SEARCH:
-                        HashSet<PartSim> visited = new HashSet<PartSim>();
+                        visited.Clear();
 
                         if (SimManager.logOutput)
                         {
                             log = new LogMsg();
                             log.buf.AppendLine("Find " + ResourceContainer.GetResourceName(type) + " sources for " + partSim.name + ":" + partSim.partId);
                         }
-                        sourcePartSet = partSim.GetSourceSet(type, allParts, visited, log, "");
+                        partSim.GetSourceSet(type, allParts, visited, sourcePartSet, log, "");
                         if (SimManager.logOutput)
                         {
                             MonoBehaviour.print(log.buf);
@@ -313,7 +376,8 @@
                         break;
                 }
 
-                if (sourcePartSet != null && sourcePartSet.Count > 0)
+
+                if (sourcePartSet.Count > 0)
                 {
                     sourcePartSets[type] = sourcePartSet;
                     if (SimManager.logOutput)
@@ -328,13 +392,13 @@
                     }
                 }
             }
-
+            
             // If we don't have sources for all the needed resources then return false without setting up any drains
-            for (int i = 0; i < resourceConsumptions.Types.Count; ++i)
-            {
-                int type = resourceConsumptions.Types[i];
-
-                if (!sourcePartSets.ContainsKey(type))
+            for (int i = 0; i < this.resourceConsumptions.Types.Count; i++)
+            {
+                int type = this.resourceConsumptions.Types[i];
+                HashSet<PartSim> sourcePartSet; 
+                if (!sourcePartSets.TryGetValue(type, out sourcePartSet) || sourcePartSet.Count == 0)
                 {
                     if (SimManager.logOutput)
                     {
@@ -345,12 +409,10 @@
                     return false;
                 }
             }
-
             // Now we set the drains on the members of the sets and update the draining parts set
-            for (int i = 0; i < resourceConsumptions.Types.Count; ++i)
-            {
-                int type = resourceConsumptions.Types[i];
-
+            for (int i = 0; i < this.resourceConsumptions.Types.Count; i++)
+            {
+                int type = this.resourceConsumptions.Types[i];
                 HashSet<PartSim> sourcePartSet = sourcePartSets[type];
                 // Loop through the members of the set 
                 double amount = resourceConsumptions[type] / sourcePartSet.Count;
@@ -358,14 +420,15 @@
                 {
                     if (SimManager.logOutput)
                     {
-                        MonoBehaviour.print("Adding drain of " + amount + " " + ResourceContainer.GetResourceName(type) + " to " + partSim.name + ":" + partSim.partId);
+                        MonoBehaviour.print(
+                            "Adding drain of " + amount + " " + ResourceContainer.GetResourceName(type) + " to " + partSim.name + ":" +
+                            partSim.partId);
                     }
 
                     partSim.resourceDrains.Add(type, amount);
                     drainingParts.Add(partSim);
                 }
             }
-
             return true;
         }
     }

--- a/KerbalEngineer/VesselSimulator/PartSim.cs
+++ b/KerbalEngineer/VesselSimulator/PartSim.cs
@@ -17,9 +17,6 @@
 //     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // 
 
-#region Using Directives
-
-#endregion
 
 namespace KerbalEngineer.VesselSimulator
 {
@@ -31,16 +28,21 @@
     using Extensions;
     using UnityEngine;
 
-    public class PartSim : Pool<PartSim>
+    public class PartSim
     {
+        private static readonly Pool<PartSim> pool = new Pool<PartSim>(Create, Reset);
+
+        private readonly List<AttachNodeSim> attachNodes = new List<AttachNodeSim>();
+
+        public double realMass;
         public double baseMass;
+        public double baseMassForCoM;
         public Vector3d centerOfMass;
-        public double cost;
+        public double baseCost;
         public int decoupledInStage;
         public bool fuelCrossFeed;
         public List<PartSim> fuelTargets = new List<PartSim>();
         public bool hasModuleEngines;
-        public bool hasModuleEnginesFX;
         public bool hasMultiModeEngine;
 
         public bool hasVessel;
@@ -53,7 +55,9 @@
         public bool isLanded;
         public bool isNoPhysics;
         public bool isSepratron;
-        public bool localCorrectThrust;
+        public bool isFairing;
+        public float fairingMass;
+        public int stageIndex;
         public String name;
         public String noCrossFeedNodeKey;
         public PartSim parent;
@@ -66,7 +70,126 @@
         public double startMass = 0d;
         public String vesselName;
         public VesselType vesselType;
-        private readonly List<AttachNodeSim> attachNodes = new List<AttachNodeSim>();
+        
+
+        private static PartSim Create()
+        {
+            return new PartSim();
+        }
+
+        private static void Reset(PartSim partSim)
+        {
+            for (int i = 0; i < partSim.attachNodes.Count; i++)
+            {
+                partSim.attachNodes[i].Release();
+            }
+            partSim.attachNodes.Clear();
+            partSim.fuelTargets.Clear();
+            partSim.resourceDrains.Reset();
+            partSim.resourceFlowStates.Reset();
+            partSim.resources.Reset();
+            partSim.baseCost = 0d;
+            partSim.baseMass = 0d;
+            partSim.baseMassForCoM = 0d;
+            partSim.startMass = 0d;
+        }
+
+        public void Release()
+        {
+            pool.Release(this);
+        }
+
+        public static PartSim New(Part thePart, int id, double atmosphere, LogMsg log)
+        {
+            PartSim partSim = pool.Borrow();
+
+            partSim.part = thePart;
+            partSim.centerOfMass = thePart.transform.TransformPoint(thePart.CoMOffset);
+            partSim.partId = id;
+            partSim.name = partSim.part.partInfo.name;
+
+            if (log != null) log.buf.AppendLine("Create PartSim for " + partSim.name);
+
+            partSim.parent = null;
+            partSim.parentAttach = partSim.part.attachMode;
+            partSim.fuelCrossFeed = partSim.part.fuelCrossFeed;
+            partSim.noCrossFeedNodeKey = partSim.part.NoCrossFeedNodeKey;
+            partSim.decoupledInStage = partSim.DecoupledInStage(partSim.part);
+            partSim.isFuelLine = partSim.part.HasModule<CModuleFuelLine>();
+            partSim.isFuelTank = partSim.part is FuelTank;
+            partSim.isSepratron = partSim.IsSepratron();
+            partSim.isFairing = partSim.IsFairing(partSim.part);
+            partSim.inverseStage = partSim.part.inverseStage;
+            //MonoBehaviour.print("inverseStage = " + inverseStage);
+
+            partSim.baseCost = partSim.part.GetCostDry();
+
+            if (log != null)
+            {
+                log.buf.AppendLine("Parent part = " + (partSim.part.parent == null ? "null" : partSim.part.parent.partInfo.name));
+                log.buf.AppendLine("physicalSignificance = " + partSim.part.physicalSignificance);
+                log.buf.AppendLine("PhysicsSignificance = " + partSim.part.PhysicsSignificance);
+            }
+
+            // Work out if the part should have no physical significance
+            // The root part is never "no physics"
+            partSim.isNoPhysics = partSim.part.physicalSignificance == Part.PhysicalSignificance.NONE ||
+                                    partSim.part.PhysicsSignificance == 1;
+
+            if (partSim.part.HasModule<LaunchClamp>())
+            {
+                partSim.realMass = 0d;
+                if (log != null) log.buf.AppendLine("Ignoring mass of launch clamp");
+            }
+            else
+            {
+                partSim.realMass = partSim.part.mass;
+                if (log != null) log.buf.AppendLine("Using part.mass of " + partSim.part.mass);
+            }
+
+            if (partSim.isFairing)
+            {
+                partSim.fairingMass = partSim.part.GetModuleMass((float)partSim.realMass);
+            }
+
+            for (int i = 0; i < partSim.part.Resources.Count; i++)
+            {
+                PartResource resource = partSim.part.Resources[i];
+
+                // Make sure it isn't NaN as this messes up the part mass and hence most of the values
+                // This can happen if a resource capacity is 0 and tweakable
+                if (!Double.IsNaN(resource.amount))
+                {
+                    if (log != null)
+                        log.buf.AppendLine(resource.resourceName + " = " + resource.amount);
+
+                    partSim.resources.Add(resource.info.id, resource.amount);
+                    partSim.resourceFlowStates.Add(resource.info.id, resource.flowState ? 1 : 0);
+                }
+                else
+                {
+                    if (log != null) log.buf.AppendLine(resource.resourceName + " is NaN. Skipping.");
+                }
+            }
+
+            partSim.hasVessel = (partSim.part.vessel != null);
+            partSim.isLanded = partSim.hasVessel && partSim.part.vessel.Landed;
+            if (partSim.hasVessel)
+            {
+                partSim.vesselName = partSim.part.vessel.vesselName;
+                partSim.vesselType = partSim.part.vesselType;
+            }
+            partSim.initialVesselName = partSim.part.initialVesselName;
+
+            partSim.hasMultiModeEngine = partSim.part.HasModule<MultiModeEngine>();
+            partSim.hasModuleEngines = partSim.part.HasModule<ModuleEngines>();
+
+            partSim.isEngine = partSim.hasMultiModeEngine || partSim.hasModuleEngines;
+
+            if (log != null) log.buf.AppendLine("Created " + partSim.name + ". Decoupled in stage " + partSim.decoupledInStage);
+
+            return partSim;
+        }
 
         public ResourceContainer ResourceDrains
         {
@@ -86,41 +209,34 @@
 
         public void CreateEngineSims(List<EngineSim> allEngines, double atmosphere, double mach, bool vectoredThrust, bool fullThrust, LogMsg log)
         {
-            bool correctThrust = SimManager.DoesEngineUseCorrectedThrust(part);
             if (log != null)
             {
-                log.buf.AppendLine("CreateEngineSims for " + name);
-
-                foreach (PartModule partMod in part.Modules)
-                {
+                log.buf.AppendLine("CreateEngineSims for " + this.name);
+                for (int i = 0; i < this.part.Modules.Count; i++)
+                {
+                    PartModule partMod = this.part.Modules[i];
                     log.buf.AppendLine("Module: " + partMod.moduleName);
                 }
-
-                log.buf.AppendLine("correctThrust = " + correctThrust);
             }
 
             if (hasMultiModeEngine)
             {
-                // A multi-mode engine has multiple ModuleEnginesFX but only one is active at any point
-                // The mode of the engine is the engineID of the ModuleEnginesFX that is active
+                // A multi-mode engine has multiple ModuleEngines but only one is active at any point
+                // The mode of the engine is the engineID of the ModuleEngines that is active
                 string mode = part.GetModule<MultiModeEngine>().mode;
 
-                List<ModuleEnginesFX> engines = part.GetModules<ModuleEnginesFX>();
-
+                List<ModuleEngines> engines = part.GetModules<ModuleEngines>();
                 for (int i = 0; i < engines.Count; ++i)
                 {
-                    ModuleEnginesFX engine = engines[i];
-
+                    ModuleEngines engine = engines[i];
                     if (engine.engineID == mode)
                     {
-                        if (log != null)
-                        {
-                            log.buf.AppendLine("Module: " + engine.moduleName);
-                        }
-
-                        Vector3 thrustvec = CalculateThrustVector(vectoredThrust ? engine.thrustTransforms : null, log);
-
-                        EngineSim engineSim = EngineSim.GetPoolObject().Initialise(this,
+                        if (log != null) log.buf.AppendLine("Module: " + engine.moduleName);
+
+                        Vector3 thrustvec = this.CalculateThrustVector(vectoredThrust ? engine.thrustTransforms : null, log);
+
+                        EngineSim engineSim = EngineSim.New(
+                            this,
                             atmosphere,
                             (float)mach,
                             engine.maxFuelFlow,
@@ -132,49 +248,48 @@
                             engine.useAtmCurve ? engine.atmCurve : null,
                             engine.useVelCurve ? engine.velCurve : null,
                             engine.currentThrottle,
+                            engine.g,
                             engine.throttleLocked || fullThrust,
                             engine.propellants,
                             engine.isOperational,
                             engine.resultingThrust,
-                            engine.thrustTransforms);
+                            engine.thrustTransforms,
+                            log);
                         allEngines.Add(engineSim);
                     }
                 }
             }
-            else
-            {
-                if (hasModuleEngines)
-                {
-                    List<ModuleEngines> engines = part.GetModules<ModuleEngines>();
-                    for (int i = 0; i < engines.Count; ++i)
-                    {
-                        ModuleEngines engine = engines[i];
-                        if (log != null)
-                        {
-                            log.buf.AppendLine("Module: " + engine.moduleName);
-                        }
-
-                        Vector3 thrustvec = CalculateThrustVector(vectoredThrust ? engine.thrustTransforms : null, log);
-
-                        EngineSim engineSim = EngineSim.GetPoolObject().Initialise(this,
-                            atmosphere,
-                            (float)mach,
-                            engine.maxFuelFlow,
-                            engine.minFuelFlow,
-                            engine.thrustPercentage,
-                            thrustvec,
-                            engine.atmosphereCurve,
-                            engine.atmChangeFlow,
-                            engine.useAtmCurve ? engine.atmCurve : null,
-                            engine.useVelCurve ? engine.velCurve : null,
-                            engine.currentThrottle,
-                            engine.throttleLocked || fullThrust,
-                            engine.propellants,
-                            engine.isOperational,
-                            engine.resultingThrust,
-                            engine.thrustTransforms);
-                        allEngines.Add(engineSim);
-                    }
+            else if (hasModuleEngines)
+            {
+                List<ModuleEngines> engines = part.GetModules<ModuleEngines>();
+                for (int i = 0; i < engines.Count; ++i)
+                {
+                    ModuleEngines engine = engines[i];
+                    if (log != null) log.buf.AppendLine("Module: " + engine.moduleName);
+
+                    Vector3 thrustvec = this.CalculateThrustVector(vectoredThrust ? engine.thrustTransforms : null, log);
+
+                    EngineSim engineSim = EngineSim.New(
+                        this,
+                        atmosphere,
+                        (float)mach,
+                        engine.maxFuelFlow,
+                        engine.minFuelFlow,
+                        engine.thrustPercentage,
+                        thrustvec,
+                        engine.atmosphereCurve,
+                        engine.atmChangeFlow,
+                        engine.useAtmCurve ? engine.atmCurve : null,
+                        engine.useVelCurve ? engine.velCurve : null,
+                        engine.currentThrottle,
+                        engine.g,
+                        engine.throttleLocked || fullThrust,
+                        engine.propellants,
+                        engine.isOperational,
+                        engine.resultingThrust,
+                        engine.thrustTransforms,
+                        log);
+                    allEngines.Add(engineSim);
                 }
             }
 
@@ -231,17 +346,22 @@
             buffer.Append(name);
             buffer.AppendFormat(":[id = {0:d}, decouple = {1:d}, invstage = {2:d}", partId, decoupledInStage, inverseStage);
 
-            buffer.AppendFormat(", vesselName = '{0}'", vesselName);
-            buffer.AppendFormat(", vesselType = {0}", SimManager.GetVesselTypeString(vesselType));
-            buffer.AppendFormat(", initialVesselName = '{0}'", initialVesselName);
+            //buffer.AppendFormat(", vesselName = '{0}'", vesselName);
+            //buffer.AppendFormat(", vesselType = {0}", SimManager.GetVesselTypeString(vesselType));
+            //buffer.AppendFormat(", initialVesselName = '{0}'", initialVesselName);
+
+            buffer.AppendFormat(", isNoPhys = {0}", isNoPhysics);
+            buffer.AppendFormat(", baseMass = {0}", baseMass);
+            buffer.AppendFormat(", baseMassForCoM = {0}", baseMassForCoM);
 
             buffer.AppendFormat(", fuelCF = {0}", fuelCrossFeed);
             buffer.AppendFormat(", noCFNKey = '{0}'", noCrossFeedNodeKey);
 
             buffer.AppendFormat(", isSep = {0}", isSepratron);
 
-            foreach (int type in resources.Types)
-            {
+            for (int i = 0; i < resources.Types.Count; i++)
+            {
+                int type = resources.Types[i];
                 buffer.AppendFormat(", {0} = {1:g6}", ResourceContainer.GetResourceName(type), resources[type]);
             }
 
@@ -264,12 +384,11 @@
             if (allParts != null)
             {
                 String newPrefix = prefix + " ";
-                foreach (PartSim partSim in allParts)
-                {
+                for (int i = 0; i < allParts.Count; i++)
+                {
+                    PartSim partSim = allParts[i];
                     if (partSim.parent == this)
-                    {
                         partSim.DumpPartToBuffer(buffer, newPrefix, allParts);
-                    }
                 }
             }
         }
@@ -278,28 +397,61 @@
         {
             foreach (int type in types)
             {
-                if (resources.HasType(type) && resourceFlowStates[type] != 0 && resources[type] > SimManager.RESOURCE_MIN)
-                {
+                if (resources.HasType(type) && resourceFlowStates[type] != 0 && resources[type] > SimManager.RESOURCE_PART_EMPTY_THRESH)
                     return false;
-                }
             }
 
             return true;
         }
 
-        public double GetMass()
-        {
-            double mass = baseMass;
+        public double GetMass(int currentStage, bool forCoM = false)
+        {
+            if (decoupledInStage >= currentStage)
+                return 0d;
+
+            double mass = forCoM ? baseMassForCoM : baseMass;
 
             for (int i = 0; i < resources.Types.Count; ++i)
             {
                 mass += resources.GetResourceMass(resources.Types[i]);
             }
 
+            if (hasVessel == false && isFairing && currentStage > inverseStage)
+            {
+                mass += fairingMass;
+            }
+            else if (hasVessel && isFairing && currentStage <= inverseStage)
+            {
+                mass -= fairingMass;
+            }
+
             return mass;
         }
 
-        public HashSet<PartSim> GetSourceSet(int type, List<PartSim> allParts, HashSet<PartSim> visited, LogMsg log, String indent)
+        public double GetCost(int currentStage)
+        {
+            if (decoupledInStage >= currentStage)
+                return 0d;
+
+            double cost = baseCost;
+
+            for (int i = 0; i < resources.Types.Count; ++i)
+            {
+                cost += resources.GetResourceCost(resources.Types[i]);
+            }
+
+            return cost;
+        }
+
+        public void ReleasePart()
+        {
+            this.part = null;
+        }
+
+        // All functions below this point must not rely on the part member (it may be null)
+        //
+
+        public void GetSourceSet(int type, List<PartSim> allParts, HashSet<PartSim> visited, HashSet<PartSim> allSources, LogMsg log, String indent)
         {
             if (log != null)
             {
@@ -307,60 +459,47 @@
                 indent += "  ";
             }
 
-            HashSet<PartSim> allSources = new HashSet<PartSim>();
-            HashSet<PartSim> partSources = null;
-
-            // Rule 1: Each part can be only visited once, If it is visited for second time in particular search it returns empty list.
+            // Rule 1: Each part can be only visited once, If it is visited for second time in particular search it returns as is.
             if (visited.Contains(this))
             {
-                if (log != null)
-                {
-                    log.buf.AppendLine(indent + "Returning empty set, already visited (" + name + ":" + partId + ")");
-                }
-
-                return allSources;
-            }
-
-            //if (log != null)
-            //    log.buf.AppendLine(indent + "Adding this to visited");
+                if (log != null) log.buf.AppendLine(indent + "Returning empty set, already visited (" + name + ":" + partId + ")");
+                return;
+            }
+
+            if (log != null) log.buf.AppendLine(indent + "Adding this to visited");
 
             visited.Add(this);
 
             // Rule 2: Part performs scan on start of every fuel pipe ending in it. This scan is done in order in which pipes were installed.
             // Then it makes an union of fuel tank sets each pipe scan returned. If the resulting list is not empty, it is returned as result.
-            //MonoBehaviour.print("foreach fuel line");
-            for (int i = 0; i < fuelTargets.Count; ++i)
-            {
-                PartSim partSim = fuelTargets[i];
-
-                if (visited.Contains(partSim))
-                {
-                    //if (log != null)
-                    //    log.buf.AppendLine(indent + "Fuel target already visited, skipping (" + partSim.name + ":" + partSim.partId + ")");
-                }
-                else
-                {
-                    //if (log != null)
-                    //    log.buf.AppendLine(indent + "Adding fuel target as source (" + partSim.name + ":" + partSim.partId + ")");
-
-                    partSources = partSim.GetSourceSet(type, allParts, visited, log, indent);
-                    if (partSources.Count > 0)
-                    {
-                        allSources.UnionWith(partSources);
-                        partSources.Clear();
-                    }
-                }
-            }
-
-            if (allSources.Count > 0)
-            {
-                if (log != null)
-                {
-                    log.buf.AppendLine(indent + "Returning " + allSources.Count + " fuel target sources (" + name + ":" + partId + ")");
-                }
-
-                return allSources;
-            }
+            //MonoBehaviour.print("for each fuel line");
+
+            int lastCount = allSources.Count;
+
+            for (int i = 0; i < this.fuelTargets.Count; i++)
+            {
+                PartSim partSim = this.fuelTargets[i];
+                if (partSim != null)
+                {
+                    if (visited.Contains(partSim))
+                    {
+                        if (log != null) log.buf.AppendLine(indent + "Fuel target already visited, skipping (" + partSim.name + ":" + partSim.partId + ")");
+                    }
+                    else
+                    {
+                        if (log != null) log.buf.AppendLine(indent + "Adding fuel target as source (" + partSim.name + ":" + partSim.partId + ")");
+
+                        partSim.GetSourceSet(type, allParts, visited, allSources, log, indent);
+                    }
+                }
+            }
+
+            if (allSources.Count > lastCount)
+            {
+                if (log != null) log.buf.AppendLine(indent + "Returning " + (allSources.Count - lastCount) + " fuel target sources (" + this.name + ":" + this.partId + ")");
+                return;
+            }
+
 
             // Rule 3: This rule has been removed and merged with rules 4 and 7 to fix issue with fuel tanks with disabled crossfeed
 
@@ -371,47 +510,38 @@
             //  The order in which mount points of a part are scanned appears to be fixed and defined by the part specification file. [Experiment]
             if (fuelCrossFeed)
             {
-                //MonoBehaviour.print("foreach attach node");
-                for (int i = 0; i < attachNodes.Count; ++i)
-                {
-                    AttachNodeSim attachSim = attachNodes[i];
-
+                lastCount = allSources.Count;
+                //MonoBehaviour.print("for each attach node");
+                for (int i = 0; i < this.attachNodes.Count; i++)
+                {
+                    AttachNodeSim attachSim = this.attachNodes[i];
                     if (attachSim.attachedPartSim != null)
                     {
                         if (attachSim.nodeType == AttachNode.NodeType.Stack)
                         {
-                            if (!(noCrossFeedNodeKey != null && noCrossFeedNodeKey.Length > 0 && attachSim.id.Contains(noCrossFeedNodeKey)))
+                            if (
+                                !(this.noCrossFeedNodeKey != null && this.noCrossFeedNodeKey.Length > 0 &&
+                                  attachSim.id.Contains(this.noCrossFeedNodeKey)))
                             {
                                 if (visited.Contains(attachSim.attachedPartSim))
                                 {
-                                    //if (log != null)
-                                    //    log.buf.AppendLine(indent + "Attached part already visited, skipping (" + attachSim.attachedPartSim.name + ":" + attachSim.attachedPartSim.partId + ")");
+                                    if (log != null) log.buf.AppendLine(indent + "Attached part already visited, skipping (" + attachSim.attachedPartSim.name + ":" + attachSim.attachedPartSim.partId + ")");
                                 }
                                 else
                                 {
-                                    //if (log != null)
-                                    //    log.buf.AppendLine(indent + "Adding attached part as source (" + attachSim.attachedPartSim.name + ":" + attachSim.attachedPartSim.partId + ")");
-
-                                    partSources = attachSim.attachedPartSim.GetSourceSet(type, allParts, visited, log, indent);
-                                    if (partSources.Count > 0)
-                                    {
-                                        allSources.UnionWith(partSources);
-                                        partSources.Clear();
-                                    }
+                                    if (log != null) log.buf.AppendLine(indent + "Adding attached part as source (" + attachSim.attachedPartSim.name + ":" + attachSim.attachedPartSim.partId + ")");
+
+                                    attachSim.attachedPartSim.GetSourceSet(type, allParts, visited, allSources, log, indent);
                                 }
                             }
                         }
                     }
                 }
 
-                if (allSources.Count > 0)
-                {
-                    if (log != null)
-                    {
-                        log.buf.AppendLine(indent + "Returning " + allSources.Count + " attached sources (" + name + ":" + partId + ")");
-                    }
-
-                    return allSources;
+                if (allSources.Count > lastCount)
+                {
+                    if (log != null) log.buf.AppendLine(indent + "Returning " + (allSources.Count - lastCount) + " attached sources (" + this.name + ":" + this.partId + ")");
+                    return;
                 }
             }
 
@@ -425,13 +555,14 @@
                 {
                     allSources.Add(this);
 
-                    if (log != null)
-                    {
-                        log.buf.AppendLine(indent + "Returning enabled tank as only source (" + name + ":" + partId + ")");
-                    }
-                }
-
-                return allSources;
+                    if (log != null) log.buf.AppendLine(indent + "Returning enabled tank as only source (" + name + ":" + partId + ")");
+                }
+
+                return;
+            }
+            else
+            {
+                if (log != null) log.buf.AppendLine(indent + "Not fuel tank or disabled. HasType = " + resources.HasType(type) + "  FlowState = " + resourceFlowStates[type]);
             }
 
             // Rule 7: If the part is radially attached to another part and it is child of that part in the ship's tree structure, it scans its 
@@ -442,30 +573,25 @@
                 {
                     if (visited.Contains(parent))
                     {
-                        //if (log != null)
-                        //    log.buf.AppendLine(indent + "Parent part already visited, skipping (" + parent.name + ":" + parent.partId + ")");
+                        if (log != null) log.buf.AppendLine(indent + "Parent part already visited, skipping (" + parent.name + ":" + parent.partId + ")");
                     }
                     else
                     {
-                        allSources = parent.GetSourceSet(type, allParts, visited, log, indent);
-                        if (allSources.Count > 0)
+                        lastCount = allSources.Count;
+                        this.parent.GetSourceSet(type, allParts, visited, allSources, log, indent);
+                        if (allSources.Count > lastCount)
                         {
-                            if (log != null)
-                            {
-                                log.buf.AppendLine(indent + "Returning " + allSources.Count + " parent sources (" + name + ":" + partId + ")");
-                            }
-
-                            return allSources;
+                            if (log != null) log.buf.AppendLine(indent + "Returning " + (allSources.Count  - lastCount) + " parent sources (" + this.name + ":" + this.partId + ")");
+                            return;
                         }
                     }
                 }
             }
 
             // Rule 8: If all preceding rules failed, part returns empty list.
-            //if (log != null)
-            //    log.buf.AppendLine(indent + "Returning empty set, no sources found (" + name + ":" + partId + ")");
-
-            return allSources;
+            if (log != null) log.buf.AppendLine(indent + "Returning empty set, no sources found (" + name + ":" + partId + ")");
+
+            return;
         }
 
         public double GetStartMass()
@@ -473,126 +599,34 @@
             return startMass;
         }
 
-        public PartSim Initialise(Part thePart, int id, double atmosphere, LogMsg log)
-        {
-            Reset(this);
-
-            part = thePart;
-            centerOfMass = thePart.transform.TransformPoint(thePart.CoMOffset);
-            partId = id;
-            name = part.partInfo.name;
-
-            if (log != null)
-            {
-                log.buf.AppendLine("Create PartSim for " + name);
-            }
-
-            parent = null;
-            parentAttach = part.attachMode;
-            fuelCrossFeed = part.fuelCrossFeed;
-            noCrossFeedNodeKey = part.NoCrossFeedNodeKey;
-            decoupledInStage = DecoupledInStage(part);
-            isFuelLine = part.HasModule<CModuleFuelLine>();
-            isFuelTank = part is FuelTank;
-            isSepratron = IsSepratron();
-            inverseStage = part.inverseStage;
-            //MonoBehaviour.print("inverseStage = " + inverseStage);
-
-            cost = part.GetCostWet();
-
-            // Work out if the part should have no physical significance
-            isNoPhysics = part.HasModule<LaunchClamp>();
-
-            if (isNoPhysics == false)
-            {
-                if (part.vessel != null)
-                {
-                    baseMass = part.mass;
-                }
-                else
-                {
-                    baseMass = part.mass + part.GetModuleMass(part.mass);
-                }
-            }
-
-            if (SimManager.logOutput)
-            {
-                MonoBehaviour.print((isNoPhysics ? "Ignoring" : "Using") + " part.mass of " + part.mass);
-            }
-
-            for (int i = 0; i < part.Resources.Count; ++i)
-            {
-                PartResource resource = part.Resources[i];
-
-                // Make sure it isn't NaN as this messes up the part mass and hence most of the values
-                // This can happen if a resource capacity is 0 and tweakable
-                if (!Double.IsNaN(resource.amount))
-                {
-                    if (SimManager.logOutput)
-                    {
-                        MonoBehaviour.print(resource.resourceName + " = " + resource.amount);
-                    }
-
-                    resources.Add(resource.info.id, resource.amount);
-                    resourceFlowStates.Add(resource.info.id, resource.flowState ? 1 : 0);
-                }
-                else
-                {
-                    MonoBehaviour.print(resource.resourceName + " is NaN. Skipping.");
-                }
-            }
-
-            startMass = GetMass();
-
-            hasVessel = (part.vessel != null);
-            isLanded = hasVessel && part.vessel.Landed;
-            if (hasVessel)
-            {
-                vesselName = part.vessel.vesselName;
-                vesselType = part.vesselType;
-            }
-            initialVesselName = part.initialVesselName;
-
-            hasMultiModeEngine = part.HasModule<MultiModeEngine>();
-            hasModuleEnginesFX = part.HasModule<ModuleEnginesFX>();
-            hasModuleEngines = part.HasModule<ModuleEngines>();
-
-            isEngine = hasMultiModeEngine || hasModuleEnginesFX || hasModuleEngines;
-
-            if (SimManager.logOutput)
-            {
-                MonoBehaviour.print("Created " + name + ". Decoupled in stage " + decoupledInStage);
-            }
-
-            return this;
-        }
-
-        public void ReleasePart()
-        {
-            part = null;
-        }
-
         public void RemoveAttachedParts(HashSet<PartSim> partSims)
         {
             // Loop through the attached parts
-            for (int i = 0; i < attachNodes.Count; ++i)
-            {
-                AttachNodeSim attachSim = attachNodes[i];
-
+            for (int i = 0; i < this.attachNodes.Count; i++)
+            {
+                AttachNodeSim attachSim = this.attachNodes[i];
                 // If the part is in the set then "remove" it by clearing the PartSim reference
                 if (partSims.Contains(attachSim.attachedPartSim))
                 {
                     attachSim.attachedPartSim = null;
                 }
             }
+
+            // Loop through the fuel targets (fuel line sources)
+            for (int i = 0; i < this.fuelTargets.Count; i++)
+            {
+                PartSim fuelTargetSim = this.fuelTargets[i];
+                // If the part is in the set then "remove" it by clearing the PartSim reference
+                if (fuelTargetSim != null && partSims.Contains(fuelTargetSim))
+                {
+                    this.fuelTargets[i] = null;
+                }
+            }
         }
 
         public void SetupAttachNodes(Dictionary<Part, PartSim> partSimLookup, LogMsg log)
         {
-            if (log != null)
-            {
-                log.buf.AppendLine("SetupAttachNodes for " + name + ":" + partId + "");
-            }
+            if (log != null) log.buf.AppendLine("SetupAttachNodes for " + name + ":" + partId + "");
 
             attachNodes.Clear();
 
@@ -600,29 +634,20 @@
             {
                 AttachNode attachNode = part.attachNodes[i];
 
-                if (log != null)
-                {
-                    log.buf.AppendLine("AttachNode " + attachNode.id + " = " + (attachNode.attachedPart != null ? attachNode.attachedPart.partInfo.name : "null"));
-                }
+                if (log != null) log.buf.AppendLine("AttachNode " + attachNode.id + " = " + (attachNode.attachedPart != null ? attachNode.attachedPart.partInfo.name : "null"));
 
                 if (attachNode.attachedPart != null && attachNode.id != "Strut")
                 {
                     PartSim attachedSim;
                     if (partSimLookup.TryGetValue(attachNode.attachedPart, out attachedSim))
                     {
-                        if (log != null)
-                        {
-                            log.buf.AppendLine("Adding attached node " + attachedSim.name + ":" + attachedSim.partId + "");
-                        }
-
-                        attachNodes.Add(AttachNodeSim.GetPoolObject().Initialise(attachedSim, attachNode.id, attachNode.nodeType));
+                        if (log != null) log.buf.AppendLine("Adding attached node " + attachedSim.name + ":" + attachedSim.partId + "");
+
+                        attachNodes.Add(AttachNodeSim.New(attachedSim, attachNode.id, attachNode.nodeType));
                     }
                     else
                     {
-                        if (log != null)
-                        {
-                            log.buf.AppendLine("No PartSim for attached part (" + attachNode.attachedPart.partInfo.name + ")");
-                        }
+                        if (log != null) log.buf.AppendLine("No PartSim for attached part (" + attachNode.attachedPart.partInfo.name + ")");
                     }
                 }
             }
@@ -636,19 +661,13 @@
                     PartSim targetSim;
                     if (partSimLookup.TryGetValue(p, out targetSim))
                     {
-                        if (log != null)
-                        {
-                            log.buf.AppendLine("Fuel target: " + targetSim.name + ":" + targetSim.partId);
-                        }
+                        if (log != null) log.buf.AppendLine("Fuel target: " + targetSim.name + ":" + targetSim.partId);
 
                         fuelTargets.Add(targetSim);
                     }
                     else
                     {
-                        if (log != null)
-                        {
-                            log.buf.AppendLine("No PartSim for fuel target (" + p.name + ")");
-                        }
+                        if (log != null) log.buf.AppendLine("No PartSim for fuel target (" + p.name + ")");
                     }
                 }
             }
@@ -661,17 +680,11 @@
                 parent = null;
                 if (partSimLookup.TryGetValue(part.parent, out parent))
                 {
-                    if (log != null)
-                    {
-                        log.buf.AppendLine("Parent part is " + parent.name + ":" + parent.partId);
-                    }
+                    if (log != null) log.buf.AppendLine("Parent part is " + parent.name + ":" + parent.partId);
                 }
                 else
                 {
-                    if (log != null)
-                    {
-                        log.buf.AppendLine("No PartSim for parent part (" + part.parent.partInfo.name + ")");
-                    }
+                    if (log != null) log.buf.AppendLine("No PartSim for parent part (" + part.parent.partInfo.name + ")");
                 }
             }
         }
@@ -697,43 +710,6 @@
             return time;
         }
 
-        private static void Reset(PartSim partSim)
-        {
-            partSim.attachNodes.Clear();
-            partSim.fuelTargets.Clear();
-            partSim.resourceDrains.Reset();
-            partSim.resourceFlowStates.Reset();
-            partSim.resources.Reset();
-            partSim.baseMass = 0.0;
-            partSim.startMass = 0.0;
-            partSim.centerOfMass = Vector3d.zero;
-            partSim.cost = 0.0;
-            partSim.decoupledInStage = 0;
-            partSim.fuelCrossFeed = false;
-            partSim.hasModuleEngines = false;
-            partSim.hasModuleEnginesFX = false;
-            partSim.hasMultiModeEngine = false;
-            partSim.hasVessel = false;
-            partSim.initialVesselName = null;
-            partSim.inverseStage = 0;
-            partSim.isDecoupler = false;
-            partSim.isEngine = false;
-            partSim.isFuelLine = false;
-            partSim.isFuelTank = false;
-            partSim.isLanded = false;
-            partSim.isNoPhysics = false;
-            partSim.isSepratron = false;
-            partSim.localCorrectThrust = false;
-            partSim.name = null;
-            partSim.noCrossFeedNodeKey = null;
-            partSim.parent = null;
-            partSim.parentAttach = AttachModes.SRF_ATTACH;
-            partSim.part = null;
-            partSim.partId = 0;
-            partSim.vesselName = null;
-            partSim.vesselType = VesselType.Base;
-        }
-
         private Vector3 CalculateThrustVector(List<Transform> thrustTransforms, LogMsg log)
         {
             if (thrustTransforms == null)
@@ -746,43 +722,27 @@
             {
                 Transform trans = thrustTransforms[i];
 
-                if (log != null)
-                {
-                    log.buf.AppendFormat("Transform = ({0:g6}, {1:g6}, {2:g6})   length = {3:g6}\n", trans.forward.x, trans.forward.y, trans.forward.z, trans.forward.magnitude);
-                }
+                if (log != null) log.buf.AppendFormat("Transform = ({0:g6}, {1:g6}, {2:g6})   length = {3:g6}\n", trans.forward.x, trans.forward.y, trans.forward.z, trans.forward.magnitude);
 
                 thrustvec -= trans.forward;
             }
 
-            if (log != null)
-            {
-                log.buf.AppendFormat("ThrustVec  = ({0:g6}, {1:g6}, {2:g6})   length = {3:g6}\n", thrustvec.x, thrustvec.y, thrustvec.z, thrustvec.magnitude);
-            }
+            if (log != null) log.buf.AppendFormat("ThrustVec  = ({0:g6}, {1:g6}, {2:g6})   length = {3:g6}\n", thrustvec.x, thrustvec.y, thrustvec.z, thrustvec.magnitude);
 
             thrustvec.Normalize();
 
-            if (log != null)
-            {
-                log.buf.AppendFormat("ThrustVecN = ({0:g6}, {1:g6}, {2:g6})   length = {3:g6}\n", thrustvec.x, thrustvec.y, thrustvec.z, thrustvec.magnitude);
-            }
+            if (log != null) log.buf.AppendFormat("ThrustVecN = ({0:g6}, {1:g6}, {2:g6})   length = {3:g6}\n", thrustvec.x, thrustvec.y, thrustvec.z, thrustvec.magnitude);
 
             return thrustvec;
         }
 
         private int DecoupledInStage(Part thePart, int stage = -1)
         {
-            if (IsDecoupler(thePart))
-            {
-                if (thePart.inverseStage > stage)
-                {
-                    stage = thePart.inverseStage;
-                }
-            }
+            if (IsDecoupler(thePart) && thePart.inverseStage > stage)
+                stage = thePart.inverseStage;
 
             if (thePart.parent != null)
-            {
                 stage = DecoupledInStage(thePart.parent, stage);
-            }
 
             return stage;
         }
@@ -799,6 +759,11 @@
                    thePart.HasModule<ModuleAnchoredDecoupler>();
         }
 
+        private bool IsFairing(Part thePart)
+        {
+            return thePart.HasModule<ModuleProceduralFairing>();
+        }
+
         private bool IsSepratron()
         {
             if (!part.ActivatesEvenIfDisconnected)

--- a/KerbalEngineer/VesselSimulator/ResourceContainer.cs
+++ b/KerbalEngineer/VesselSimulator/ResourceContainer.cs
@@ -19,6 +19,7 @@
 
 #region Using Directives
 
+using System;
 using System.Collections;
 using System.Collections.Generic;
 
@@ -30,15 +31,17 @@
 {
     public class ResourceContainer
     {
-        private Hashtable resources = new Hashtable();
+        private Dictionary<int, double> resources = new Dictionary<int, double>();
+        private List<int> types = new List<int>();
 
         public double this[int type]
         {
             get
             {
-                if (this.resources.ContainsKey(type))
+                double value;
+                if (this.resources.TryGetValue(type, out value))
                 {
-                    return (double)this.resources[type];
+                    return value;
                 }
 
                 return 0d;
@@ -52,6 +55,7 @@
                 else
                 {
                     this.resources.Add(type, value);
+                    this.types.Add(type);
                 }
             }
         }
@@ -60,13 +64,6 @@
         {
             get
             {
-                List<int> types = new List<int>();
-
-                foreach (int key in this.resources.Keys)
-                {
-                    types.Add(key);
-                }
-
                 return types;
             }
         }
@@ -92,7 +89,7 @@
             {
                 foreach (int type in this.resources.Keys)
                 {
-                    if ((double)this.resources[type] > SimManager.RESOURCE_MIN)
+                    if (this.resources[type] > SimManager.RESOURCE_MIN)
                     {
                         return false;
                     }
@@ -111,7 +108,7 @@
         {
             foreach (int type in types)
             {
-                if (this.HasType(type) && (double)this.resources[type] > SimManager.RESOURCE_MIN)
+                if (this.HasType(type) && this.resources[type] > SimManager.RESOURCE_MIN)
                 {
                     return false;
                 }
@@ -124,17 +121,19 @@
         {
             if (this.resources.ContainsKey(type))
             {
-                this.resources[type] = (double)this.resources[type] + amount;
+                this.resources[type] = this.resources[type] + amount;
             }
             else
             {
                 this.resources.Add(type, amount);
+                this.types.Add(type);
             }
         }
 
         public void Reset()
         {
             this.resources.Clear();
+            this.types.Clear();
         }
 
         public void Debug()
@@ -148,7 +147,13 @@
         public double GetResourceMass(int type)
         {
             double density = GetResourceDensity(type);
-            return density == 0d ? 0d : (double)this.resources[type] * density;
+            return density == 0d ? 0d : this.resources[type] * density;
+        }
+
+        public double GetResourceCost(int type)
+        {
+            double unitCost = GetResourceUnitCost(type);
+            return unitCost == 0d ? 0d : this.resources[type] * unitCost;
         }
 
         public static ResourceFlowMode GetResourceFlowMode(int type)
@@ -170,5 +175,10 @@
         {
             return PartResourceLibrary.Instance.GetDefinition(type).name;
         }
+
+        public static double GetResourceUnitCost(int type)
+        {
+            return PartResourceLibrary.Instance.GetDefinition(type).unitCost;
+        }
     }
 }

--- a/KerbalEngineer/VesselSimulator/SimManager.cs
+++ b/KerbalEngineer/VesselSimulator/SimManager.cs
@@ -35,6 +35,7 @@
         #region Constants
 
         public const double RESOURCE_MIN = 0.0001;
+        public const double RESOURCE_PART_EMPTY_THRESH = 0.01;
 
         #endregion
 

--- a/KerbalEngineer/VesselSimulator/Simulation.cs
+++ b/KerbalEngineer/VesselSimulator/Simulation.cs
@@ -30,6 +30,7 @@
 
 namespace KerbalEngineer.VesselSimulator
 {
+    using System.ComponentModel;
     using CompoundParts;
     using Extensions;
     using Helpers;
@@ -42,17 +43,17 @@
         private List<EngineSim> allEngines = new List<EngineSim>();
         private List<PartSim> allFuelLines = new List<PartSim>();
         private List<PartSim> allParts = new List<PartSim>();
-        private Dictionary<Part, PartSim> partSimLookup = new Dictionary<Part, PartSim>();
         private double atmosphere;
         private int currentStage;
         private double currentisp;
+        private HashSet<PartSim> decoupledParts = new HashSet<PartSim>();
         private bool doingCurrent;
-        private List<PartSim> dontStageParts = new List<PartSim>();
-        List<List<PartSim>> dontStagePartsLists = new List<List<PartSim>>();
-        private HashSet<PartSim> drainingParts = new HashSet<PartSim>();
-        private HashSet<int> drainingResources = new HashSet<int>();
-        private HashSet<PartSim> decoupledParts = new HashSet<PartSim>();
+        private List<PartSim> dontStageParts;
+        private List<List<PartSim>> dontStagePartsLists = new List<List<PartSim>>();
+        private HashSet<PartSim> drainingParts;
+        private HashSet<int> drainingResources;
         private double gravity;
+        private Dictionary<Part, PartSim> partSimLookup;
 
         private int lastStage;
         private List<Part> partList = new List<Part>();
@@ -78,6 +79,17 @@
 
         public Simulation()
         {
+            this.allParts = new List<PartSim>();
+            this.allFuelLines = new List<PartSim>();
+            this.drainingParts = new HashSet<PartSim>();
+            this.allEngines = new List<EngineSim>();
+            this.activeEngines = new List<EngineSim>();
+            this.drainingResources = new HashSet<int>();
+            this.totalStageThrustForce = new ForceAccumulator();
+
+            // A dictionary for fast lookup of Part->PartSim during the preparation phase
+            partSimLookup = new Dictionary<Part, PartSim>();
+
             if (SimManager.logOutput)
             {
                 MonoBehaviour.print("Simulation created");
@@ -91,7 +103,7 @@
                 double mass = 0d;
 
                 for (int i = 0; i < allParts.Count; ++i) { 
-                    mass += allParts[i].GetMass();
+                    mass += allParts[i].GetMass(currentStage);
                 }
 
                 return mass;
@@ -107,7 +119,7 @@
                 for (int i = 0; i < allParts.Count; ++i)
                 {
                     PartSim partSim = allParts[i];
-                    vectorAverager.Add(partSim.centerOfMass, partSim.GetMass());
+                    vectorAverager.Add(partSim.centerOfMass, partSim.GetMass(currentStage, true));
                 }
 
                 return vectorAverager.Get();
@@ -127,6 +139,7 @@
                 log.buf.AppendLine("PrepareSimulation started");
                 dumpTree = true;
             }
+            this._timer.Reset();
             this._timer.Start();
 
             // Store the parameters in members for ease of access in other functions
@@ -135,6 +148,7 @@
             this.atmosphere = theAtmosphere;
             this.mach = theMach;
             this.lastStage = Staging.lastStage;
+            this.maxMach = 1.0f;
             //MonoBehaviour.print("lastStage = " + lastStage);
 
             // Clear the lists for our simulation parts
@@ -145,10 +159,6 @@
             activeEngines.Clear();
             drainingResources.Clear();
 
-            PartSim.ReleaseAll();
-            EngineSim.ReleaseAll();
-            AttachNodeSim.ReleaseAll();
-
             // A dictionary for fast lookup of Part->PartSim during the preparation phase
             partSimLookup.Clear();
 
@@ -157,7 +167,7 @@
                 this.vesselName = this.partList[0].vessel.vesselName;
                 this.vesselType = this.partList[0].vessel.vesselType;
             }
-
+            //MonoBehaviour.print("PrepareSimulation pool size = " + PartSim.pool.Count());
             // First we create a PartSim for each Part (giving each a unique id)
             int partId = 1;
             for (int i = 0; i < partList.Count; ++i)
@@ -175,7 +185,7 @@
                 }
 
                 // Create the PartSim
-                PartSim partSim = PartSim.GetPoolObject().Initialise(part, partId, this.atmosphere, log);
+                PartSim partSim = PartSim.New(part, partId, this.atmosphere, log);
 
                 // Add it to the Part lookup dictionary and the necessary lists
                 partSimLookup.Add(part, partSim);
@@ -201,8 +211,9 @@
 
             // Now that all the PartSims have been created we can do any set up that needs access to other parts
             // First we set up all the parent links
-            foreach (PartSim partSim in this.allParts)
-            {
+            for (int i = 0; i < this.allParts.Count; i++)
+            {
+                PartSim partSim = this.allParts[i];
                 partSim.SetupParent(partSimLookup, log);
             }
 
@@ -280,7 +291,7 @@
 
             return true;
         }
-
+        
         // This function runs the simulation and returns a newly created array of Stage objects
         public Stage[] RunSimulation()
         {
@@ -289,6 +300,7 @@
                 MonoBehaviour.print("RunSimulation started");
             }
 
+            this._timer.Reset();
             this._timer.Start();
 
             LogMsg log = null;
@@ -300,7 +312,6 @@
             // Start with the last stage to simulate
             // (this is in a member variable so it can be accessed by AllowedToStage and ActivateStage)
             this.currentStage = this.lastStage;
-
             // Work out which engines would be active if just doing the staging and if this is different to the 
             // currently active engines then generate an extra stage
             // Loop through all the engines
@@ -373,6 +384,7 @@
             // Create the array of stages that will be returned
             Stage[] stages = new Stage[this.currentStage + 1];
 
+            int startStage = currentStage;
 
             // Loop through the stages
             while (this.currentStage >= 0)
@@ -380,7 +392,6 @@
                 if (log != null)
                 {
                     log.buf.AppendLine("Simulating stage " + this.currentStage);
-                    log.buf.AppendLine("ShipMass = " + this.ShipMass);
                     log.Flush();
                     this._timer.Reset();
                     this._timer.Start();
@@ -389,13 +400,18 @@
                 // Update active engines and resource drains
                 this.UpdateResourceDrains();
 
+                // Update the masses of the parts to correctly handle "no physics" parts
+                this.stageStartMass = this.UpdatePartMasses();
+
+                if (log != null)
+                    this.allParts[0].DumpPartToBuffer(log.buf, "", this.allParts);
+
                 // Create the Stage object for this stage
                 Stage stage = new Stage();
 
                 this.stageTime = 0d;
                 this.vecStageDeltaV = Vector3.zero;
 
-                this.stageStartMass = this.ShipMass;
                 this.stageStartCom = this.ShipCom;
 
                 this.stepStartMass = this.stageStartMass;
@@ -405,11 +421,11 @@
 
                 // Store various things in the Stage object
                 stage.thrust = this.totalStageThrust;
-                //MonoBehaviour.print("stage.thrust = " + stage.thrust);
+                if (log != null) log.buf.AppendLine("stage.thrust = " + stage.thrust);
                 stage.thrustToWeight = this.totalStageThrust / (this.stageStartMass * this.gravity);
                 stage.maxThrustToWeight = stage.thrustToWeight;
-                //MonoBehaviour.print("StageMass = " + stageStartMass);
-                //MonoBehaviour.print("Initial maxTWR = " + stage.maxThrustToWeight);
+                if (log != null) log.buf.AppendLine("StageMass = " + stageStartMass);
+                if (log != null) log.buf.AppendLine("Initial maxTWR = " + stage.maxThrustToWeight);
                 stage.actualThrust = this.totalStageActualThrust;
                 stage.actualThrustToWeight = this.totalStageActualThrust / (this.stageStartMass * this.gravity);
 
@@ -434,17 +450,31 @@
 
                 stage.thrustOffsetAngle = Math.Asin(sinThrustOffsetAngle) * 180 / Math.PI;
 
-                // Calculate the cost and mass of this stage and add all engines and tanks that are decoupled
-                // in the next stage to the dontStageParts list
+                // Calculate the total cost of the vessel at this point
+                stage.totalCost = 0d;
                 for (int i = 0; i < allParts.Count; ++i)
                 {
-                    PartSim partSim = allParts[i];
-
-                    if (partSim.decoupledInStage == this.currentStage - 1)
-                    {
-                        stage.cost += partSim.cost;
-                        stage.mass += partSim.GetStartMass();
-                    }
+                    if (this.currentStage > allParts[i].decoupledInStage)
+                        stage.totalCost += allParts[i].GetCost(currentStage);
+                }
+
+                // The total mass is simply the mass at the start of the stage
+                stage.totalMass = this.stageStartMass;
+
+                // If we have done a previous stage
+                if (currentStage < startStage)
+                {
+                    // Calculate what the previous stage's mass and cost were by subtraction
+                    Stage prev = stages[currentStage + 1];
+                    prev.cost = prev.totalCost - stage.totalCost;
+                    prev.mass = prev.totalMass - stage.totalMass;
+                }
+
+                // The above code will never run for the last stage so set those directly
+                if (currentStage == 0)
+                {
+                    stage.cost = stage.totalCost;
+                    stage.mass = stage.totalMass;
                 }
 
                 this.dontStageParts = dontStagePartsLists[this.currentStage];
@@ -456,8 +486,9 @@
                     if (this.dontStageParts.Count > 0)
                     {
                         log.buf.AppendLine("Parts preventing staging:");
-                        foreach (PartSim partSim in this.dontStageParts)
-                        {
+                        for (int i = 0; i < this.dontStageParts.Count; i++)
+                        {
+                            PartSim partSim = this.dontStageParts[i];
                             partSim.DumpPartToBuffer(log.buf, "");
                         }
                     }
@@ -468,6 +499,7 @@
 
                     log.Flush();
                 }
+
 
                 // Now we will loop until we are allowed to stage
                 int loopCounter = 0;
@@ -475,7 +507,6 @@
                 {
                     loopCounter++;
                     //MonoBehaviour.print("loop = " + loopCounter);
-
                     // Calculate how long each draining tank will take to drain and run for the minimum time
                     double resourceDrainTime = double.MaxValue;
                     PartSim partMinDrain = null;
@@ -493,7 +524,6 @@
                     {
                         MonoBehaviour.print("Drain time = " + resourceDrainTime + " (" + partMinDrain.name + ":" + partMinDrain.partId + ")");
                     }
-
                     foreach (PartSim partSim in this.drainingParts)
                     {
                         partSim.DrainResources(resourceDrainTime);
@@ -525,7 +555,7 @@
 
                     // Recalculate the current thrust and isp for the next step
                     this.CalculateThrustAndISP();
-
+                    
                     // Check if we actually changed anything
                     if (this.stepStartMass == this.stepEndMass)
                     {
@@ -551,6 +581,7 @@
                     this.stepStartMass = this.stepEndMass;
                 }
 
+
                 // Store more values in the Stage object and stick it in the array
 
                 // Store the magnitude of the deltaV vector
@@ -606,8 +637,6 @@
                 // For each stage we total up the cost, mass, deltaV and time for this stage and all the stages above
                 for (int j = i; j >= 0; j--)
                 {
-                    stages[i].totalCost += stages[j].cost;
-                    stages[i].totalMass += stages[j].mass;
                     stages[i].totalDeltaV += stages[j].deltaV;
                     stages[i].totalTime += stages[j].time;
                     stages[i].partCount = i > 0 ? stages[i].totalPartCount - stages[i - 1].totalPartCount : stages[i].totalPartCount;
@@ -631,8 +660,73 @@
                 this._timer.Stop();
                 MonoBehaviour.print("RunSimulation: " + this._timer.ElapsedMilliseconds + "ms");
             }
-
+            FreePooledObject();
+            
             return stages;
+        }
+
+        public double UpdatePartMasses()
+        {
+            for (int i = 0; i < this.allParts.Count; i++)
+            {
+                this.allParts[i].baseMass = this.allParts[i].realMass;
+                this.allParts[i].baseMassForCoM = this.allParts[i].realMass;
+            }
+
+            for (int i = 0; i < this.allParts.Count; i++)
+            {
+                PartSim part = this.allParts[i];
+
+                // Check if part should pass it's mass onto its parent.
+                if (part.isNoPhysics && part.parent != null)
+                {
+                    PartSim partParent = part.parent;
+
+                    // Loop through all parents until a physically significant parent is found.
+                    while (partParent != null)
+                    {
+                        // Check if parent is physically significant.
+                        if (partParent.isNoPhysics == false)
+                        {
+                            // Apply the mass to the parent and remove it from the originating part.
+                            partParent.baseMassForCoM += part.baseMassForCoM;
+                            part.baseMassForCoM = 0.0;
+
+                            // Break out of the recursive loop.
+                            break;
+                        }
+
+                        // Recursively loop through the parent parts.
+                        partParent = partParent.parent;
+                    }
+                }
+            }
+
+            double totalMass = 0d;
+            for (int i = 0; i < this.allParts.Count; i++)
+            {
+                totalMass += this.allParts[i].startMass = this.allParts[i].GetMass(currentStage);
+            }
+
+            return totalMass;
+        }
+
+        // Make sure we free them all, even if they should all be free already at this point
+        public void FreePooledObject()
+        {
+            //MonoBehaviour.print("FreePooledObject pool size before = " + PartSim.pool.Count() + " for " + allParts.Count + " parts");
+            foreach (PartSim part in allParts)
+            {
+                part.Release();
+            }
+            //MonoBehaviour.print("FreePooledObject pool size after = " + PartSim.pool.Count());
+
+            //MonoBehaviour.print("FreePooledObject pool size before = " + EngineSim.pool.Count() + " for " + allEngines.Count + " engines");
+            foreach (EngineSim engine in allEngines)
+            {
+                engine.Release();
+            }
+            //MonoBehaviour.print("FreePooledObject pool size after = " + EngineSim.pool.Count());
         }
 
         private void BuildDontStageLists(LogMsg log)
@@ -663,7 +757,8 @@
                 {
                     if (log != null)
                     {
-                        log.buf.AppendLine(partSim.name + ":" + partSim.partId + " is engine or tank, decoupled = " + partSim.decoupledInStage);
+                        log.buf.AppendLine(
+                            partSim.name + ":" + partSim.partId + " is engine or tank, decoupled = " + partSim.decoupledInStage);
                     }
 
                     if (partSim.decoupledInStage < -1 || partSim.decoupledInStage > this.currentStage - 1)
@@ -696,7 +791,6 @@
             for (int i = 0; i < allEngines.Count; ++i)
             {
                 EngineSim engine = allEngines[i];
-
                 if (engine.isActive)
                 {
                     this.activeEngines.Add(engine);
@@ -734,9 +828,7 @@
                     this.totalStageThrustForce.AddForce(engine.appliedForces[j]);
                 }
             }
-
             //MonoBehaviour.print("vecThrust = " + vecThrust.ToString() + "   magnitude = " + vecThrust.magnitude);
-
             this.totalStageThrust = this.vecThrust.magnitude;
             this.totalStageActualThrust = this.vecActualThrust.magnitude;
 
@@ -794,8 +886,9 @@
                 StringBuilder buffer = new StringBuilder(1024);
                 buffer.AppendFormat("Active engines = {0:d}\n", this.activeEngines.Count);
                 int i = 0;
-                foreach (EngineSim engine in this.activeEngines)
-                {
+                for (int j = 0; j < this.activeEngines.Count; j++)
+                {
+                    EngineSim engine = this.activeEngines[j];
                     engine.DumpEngineToBuffer(buffer, "Engine " + (i++) + ":");
                 }
                 MonoBehaviour.print(buffer);
@@ -893,14 +986,17 @@
             {
                 // Remove it from the all parts list
                 this.allParts.Remove(partSim);
+                partSim.Release();
                 if (partSim.isEngine)
                 {
                     // If it is an engine then loop through all the engine modules and remove all the ones from this engine part
                     for (int i = this.allEngines.Count - 1; i >= 0; i--)
                     {
-                        if (this.allEngines[i].partSim == partSim)
+                        EngineSim engine = this.allEngines[i];
+                        if (engine.partSim == partSim)
                         {
                             this.allEngines.RemoveAt(i);
+                            engine.Release();
                         }
                     }
                 }
@@ -912,7 +1008,8 @@
             }
 
             // Loop through all the (remaining) parts
-            for (int i = 0; i < allParts.Count; ++i) { 
+            for (int i = 0; i < allParts.Count; ++i)
+            { 
                 // Ask the part to remove all the parts that are decoupled
                 allParts[i].RemoveAttachedParts(decoupledParts);
             }
@@ -954,3 +1051,4 @@
         }
     }
 }
+

 Binary files a/Output/KerbalEngineer/KerbalEngineer.dll and b/Output/KerbalEngineer/KerbalEngineer.dll differ
--- a/Output/KerbalEngineer/KerbalEngineer.version
+++ b/Output/KerbalEngineer/KerbalEngineer.version
@@ -5,13 +5,13 @@
 	{
 		"MAJOR":1,
 		"MINOR":0,
-		"PATCH":16,
-		"BUILD":4
+		"PATCH":17,
+		"BUILD":0
 	},
 	"KSP_VERSION":
 	{
 		"MAJOR":1,
 		"MINOR":0,
-		"PATCH":1
+		"PATCH":4
 	}
 }