diff --git a/GameData/RealismOverhaul/Engine_Configs/AltairIII_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/AltairIII_Config.cfg
index 2d3cda8d92..fa2a5b3a0b 100644
--- a/GameData/RealismOverhaul/Engine_Configs/AltairIII_Config.cfg
+++ b/GameData/RealismOverhaul/Engine_Configs/AltairIII_Config.cfg
@@ -1,38 +1,38 @@
 //	==================================================
-//	Altair III (FW4S)
+//	Altair III (FW-4S, SR57-UT-1, Star 20)
 //
 //	Manufacturer: United Aircraft
 //
 //	=================================================================================
 //	Altair III
-//	FW-4S
+//	FW-4S, SR57-UT-1, Star 20
 //
-//	Dry Mass: 23.16585 kg
+//	Dry Mass: 23.75 kg	based on average expended mass from [1]
 //	Thrust (SL): ??? kN
-//	Thrust (Vac): 25.227 kN
-//	ISP: ??? SL / 284.5 Vac
-//	Burn Time: 31.5
-//	Chamber Pressure: 5.92 MPa
-//	Propellant: CTPB
+//	Thrust (Vac): 29.36 kN (26.29 kN average) [2]
+//	ISP: ??? SL / 284.22 Vac	average of [1]
+//	Burn Time: 32	maximum manufacturer-specified action time [1]
+//	Chamber Pressure: 5.49 MPa	[2]
+//	Propellant: PBAN	[2]
 //	Prop Ratio: N/A
 //	Throttle: N/A
-//	Nozzle Ratio: ???
+//	Nozzle Ratio: 53	[2]
 //	Ignitions: 1
 //	=================================================================================
 
 //	Sources:
 
-//	Source: NASA CR-145136 Scout Nozzle Data Book: https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19770010201.pdf
-//	Source 1: NASA CR-165950 Scout Launch Vehicle Final Report.PDF)
-//	Source 2: Performance of a UTC FW-4S Solid-Propellant Rocket Motor
-//	  https://apps.dtic.mil/dtic/tr/fulltext/u2/a002149.pdf
+//	[1] NASA CR-165950 Scout Launch Vehicle Final Report.PDF)
+//	[2] https://apps.dtic.mil/sti/citations/ADA002149
+//	[3] https://ntrs.nasa.gov/api/citations/19720026092/downloads/19720026092.pdf
 
 //	Used by:
 
 //	Notes:
 
+//	Fiber-wound casing
 //	Dimensions: 1.484122 x 0.508 m
-//	Propellant Mass: 274.4232 kg
+//	Expended weight: 275.62 kg
 //	===============================================================
 @PART[*]:HAS[#engineType[Altair-III]]:FOR[RealismOverhaulEngines]
 {
@@ -40,7 +40,7 @@
 	@manufacturer = #roMfrUA
 	@description = #roAltair-IIIDesc	//A small solid kick motor. Developed from the Altair, this final version was used on later Scout B launch vehicles. It was used to circularize at apogee or perform a final payload kick. Maximum thrust 25.6kN, burn time 31 seconds.
 
-	@tags ^= :$: USA united aircraft united technologies star 20 altair iii 3 fw-4s te-m-640-1 solid upper pban
+	@tags ^= :$: USA united aircraft united technologies star 20 altair iii 3 fw-4s sr57 solid upper pban
 
 	%specLevel = operational
 
@@ -60,14 +60,14 @@
 	{
 		name = ModuleFuelTanks
 		type = PBAN
-		volume = 154.8664
+		volume = 155.54
 		basemass = -1
 		
 		TANK
 		{
 			name = PBAN
-			amount = 154.8664
-			maxAmount = 154.8664
+			amount = 155.54
+			maxAmount = 155.54
 		}
 	}
 	
@@ -78,13 +78,14 @@
 		configuration = Altair-III
 		modded = false
 		
-		origMass = 0.0232
+		origMass = 0.02375
 		CONFIG
 		{
 			name = Altair-III
+			description = A.K.A FW-4S, SR57-UT-1 or Star 20
 			specLevel = operational
-			minThrust = 31
-			maxThrust = 31
+			minThrust = 29.36
+			maxThrust = 29.36
 			heatProduction = 100
 			PROPELLANT
 			{
@@ -94,7 +95,7 @@
 			}
 			atmosphereCurve
 			{
-				key = 0 284.5
+				key = 0 284.22
 				key = 1 200
 			}
 			// guesses (note: max is above nominal * thrust_curve_max)
@@ -141,7 +142,7 @@
 			// 73 cycles, 1 failures
 			TESTFLIGHT:NEEDS[TestLite|TestFlight]
 			{
-				ratedBurnTime = 31
+				ratedBurnTime = 32
 				ignitionReliabilityStart = 0.970444
 				ignitionReliabilityEnd = 0.995333
 				cycleReliabilityStart = 0.970045
diff --git a/GameData/RealismOverhaul/Engine_Configs/FW5_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/FW5_Config.cfg
new file mode 100644
index 0000000000..89beb15cdc
--- /dev/null
+++ b/GameData/RealismOverhaul/Engine_Configs/FW5_Config.cfg
@@ -0,0 +1,151 @@
+//	==================================================
+//	FW-5
+//
+//	Manufacturer: United Aircraft
+//
+//	=================================================================================
+//	FW-5
+//	HS-333
+//
+//	Dry Mass: 28.57 kg (expended weight) [1]
+//	Thrust (SL): ??? kN
+//	Thrust (Vac): 24.91 kN (22.51 kN average) [1]
+//	ISP: ??? SL / 284.8 Vac
+//	Burn Time: 39
+//	Chamber Pressure: 6.25 MPa
+//	Propellant: PBAN
+//	Prop Ratio: N/A
+//	Throttle: N/A
+//	Nozzle Ratio: 60
+//	Ignitions: 1
+//	=================================================================================
+
+//	Sources:
+
+//	[1] https://ntrs.nasa.gov/api/citations/19720026092/downloads/19720026092.pdf
+//	[2] https://www.planet4589.org/space/book/lv/engines/motorlist/fw5.html
+//	[3] https://www.planet4589.org/space/book/lv/engines/kick/USMOTORSINTHE1960S.html
+
+//	Used by:
+
+//	Notes:
+
+//	Fiber-wound casing
+//	Propellant Mass: 263.99 kg
+//	===============================================================
+@PART[*]:HAS[#engineType[FW5]]:FOR[RealismOverhaulEngines]
+{
+	@title = #roFW5Title	//FW-5
+	@manufacturer = #roMfrUA
+	@description = #roFW5Desc
+
+	@tags ^= :$: USA united aircraft united technologies fw5 fw-5 solid upper pban
+
+	%specLevel = operational
+
+	!MODULE[ModuleGimbal] {}
+	!MODULE[ModuleFuelTanks],* {}
+	!MODULE[ModuleAlternator],*{}
+	!RESOURCE,*{}
+	
+	@MODULE[ModuleEngines*]
+	{
+		%EngineType = SolidBooster
+		%allowShutdown = False
+		%throttleLocked = True
+	}
+	
+	MODULE
+	{
+		name = ModuleFuelTanks
+		type = PBAN
+		volume = 148.98
+		basemass = -1
+		
+		TANK
+		{
+			name = PBAN
+			amount = 148.98
+			maxAmount = 148.98
+		}
+	}
+	
+	MODULE
+	{
+		name = ModuleEngineConfigs
+		type = ModuleEngines
+		configuration = FW-5
+		modded = false
+		
+		origMass = 0.02857
+		CONFIG
+		{
+			name = FW-5
+			specLevel = operational
+			minThrust = 24.91
+			maxThrust = 24.91
+			heatProduction = 100
+			PROPELLANT
+			{
+				name = PBAN
+				ratio = 1
+				DrawGauge = True
+			}
+			atmosphereCurve
+			{
+				key = 0 284.8
+				key = 1 150
+			}
+			// guesses (note: max is above nominal * thrust_curve_max)
+			// Same as FW-4S?
+			curveResource = PBAN
+			thrustCurve
+			{
+				key = 1.00000 0.66667  -5.20777	  0.00000
+				key = 0.98656 0.73333  -4.73446	 -4.73536
+				key = 0.97184 0.80000  -4.34000	 -4.34063
+				key = 0.95584 0.86667  -4.00621	 -4.00667
+				key = 0.93856 0.93333	0.31002	 -3.72043
+				key = 0.88528 0.91667	0.31566	  0.31566
+				key = 0.83296 0.90000  -0.57870	  0.32150
+				key = 0.77429 0.93333  -0.55803	 -0.55804
+				key = 0.71349 0.96667  -0.53879	 -0.53880
+				key = 0.65056 1.00000	0.00000	 -0.52084
+				key = 0.45856 1.00000	0.69445	  0.00000
+				key = 0.41136 0.96667	0.71839	  0.71839
+				key = 0.36576 0.93333	0.74405	  0.74404
+				key = 0.32176 0.90000	0.77161	  0.77160
+				key = 0.27936 0.86667	0.50080	  0.80128
+				key = 0.24640 0.85000	0.51062	  0.51062
+				key = 0.21408 0.83333	0.00000	  0.52083
+				key = 0.15008 0.83333	1.04168	  0.00000
+				key = 0.11872 0.80000	0.81381	  1.08506
+				key = 0.08848 0.77500	0.84006	  0.84005
+				key = 0.05920 0.75000	6.75379	  0.86805
+				key = 0.04573 0.65278	7.76113	  7.75451
+				key = 0.03413 0.55556	9.12262	  9.10984
+				key = 0.02440 0.45833  11.06643	 11.03824
+				key = 0.01653 0.36111  14.07522	 13.99902
+				key = 0.01053 0.26389  19.40953	 19.11637
+				key = 0.00640 0.16667  13.12500	 30.03214
+				key = 0.00284 0.11111  20.25463	 19.37500
+				key = 0.00071 0.05556  50.48073	 37.61574
+				key = 0.00000 0.01000	0.00000 139.51675
+			}
+
+			// 12 flown with 0 failures
+			TESTFLIGHT:NEEDS[TestLite|TestFlight]
+			{
+				ratedBurnTime = 39
+				ignitionReliabilityStart = 0.942308
+				ignitionReliabilityEnd = 0.988462
+				cycleReliabilityStart = 0.942308
+				cycleReliabilityEnd = 0.988462
+				techTransfer = Altair-III,Altair-II,Altair:50
+				reliabilityDataRateMultiplier = 2
+				
+				isSolid = True
+			}
+		}
+	}
+}
diff --git a/GameData/RealismOverhaul/Engine_Configs/SR28_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/SR28_Config.cfg
new file mode 100644
index 0000000000..36438d258b
--- /dev/null
+++ b/GameData/RealismOverhaul/Engine_Configs/SR28_Config.cfg
@@ -0,0 +1,130 @@
+//	==================================================
+//	SR28-JPL-3
+//
+//	Manufacturer: JPL
+//
+//	=================================================================================
+//	SR28-JPL-3
+//	ATS 1/2/3?
+//
+//	Dry Mass: 41.37 kg (loaded weight 860 lbs - expended weight)	[1]
+//	Thrust (SL): ??? kN
+//	Thrust (Vac): 27.06 kN (24.46 kN average)	[1]
+//	ISP: ??? SL / 278.0 Vac		[1]
+//	Burn Time: 45		total burn time, action time ~42.8 seconds	[1]
+//	Chamber Pressure: 1.79 MPa peak	[2]
+//	Propellant: PUPE	JPL-540 used polyurethane binder [3]
+//	Prop Ratio: N/A
+//	Throttle: N/A
+//	Nozzle Ratio: 35 [2]
+//	Ignitions: 1
+//	=================================================================================
+
+//	Sources:
+
+//	[1] https://apps.dtic.mil/sti/citations/tr/AD0802218
+//	[2] https://ntrs.nasa.gov/api/citations/19720026092/downloads/19720026092.pdf
+//	[3] https://ntrs.nasa.gov/api/citations/19680012396/downloads/19680012396.pdf
+
+//	Used by:
+
+//	Notes:
+
+//	-1 uses steel case, -3 uses titanium
+//	total expended mass 348.72 kg
+//	==================================================
+@PART[*]:HAS[#engineType[SR28]]:FOR[RealismOverhaulEngines]
+{
+	%title = #roSR28Title	//SR28
+	%manufacturer = #roMfrJPL
+	%description = #roSR28Desc
+
+	@tags ^= :$: USA jpl jet propulsion laboratory sr28 sr-28 solid srm upper pupe
+
+	%specLevel = operational
+
+	@MODULE[ModuleEngines*]
+	{
+		%EngineType = SolidBooster
+		%allowShutdown = False
+		%throttleLocked = True
+		%exhaustDamage = True
+	}
+
+	!MODULE[ModuleEngineConfigs],*{}
+	!MODULE[ModuleAlternator],*{}
+	!RESOURCE,*{}
+	!MODULE[ModuleFuelTanks],*{}
+
+	!MODULE[ModuleGimbal],*{}
+
+	MODULE
+	{
+		name = ModuleFuelTanks
+		volume = 197.02
+		type = PUPE
+		basemass = -1
+		TANK
+		{
+			name = PUPE
+			amount = 197.02
+			maxAmount = 197.02
+		}
+	}
+
+	MODULE
+	{
+		name = ModuleEngineConfigs
+		type = ModuleEngines
+		configuration = SR28-JPL-3
+		modded = false
+		origMass = 0.04137
+		CONFIG
+		{
+			name = SR28-JPL-3
+			specLevel = operational
+			minThrust = 27.06
+			maxThrust = 27.06
+			heatProduction = 100
+			PROPELLANT
+			{
+				name = PUPE
+				ratio = 1.0
+				DrawGauge = True
+			}
+			atmosphereCurve
+			{
+				key = 0 278.0
+				key = 1 150
+			}
+			curveResource = PUPE
+			//Estimated from [1]
+			thrustCurve
+			{
+				key = 0 0.03 19 19
+				key = 0.03 0.6 11.57143 11.57143
+				key = 0.1 0.89 2.871429 2.871429
+				key = 0.15 0.97 0.9250003 0.9250003
+				key = 0.27 1 0.02499983 0.02499983
+				key = 0.52 0.95 -0.4333333 -0.4333333
+				key = 0.73 0.81 -0.8333334 -0.8333334
+				key = 0.89 0.65 -1.269231 -1.269231
+				key = 0.955 0.55 -2.880341 -2.880341
+				key = 1 0.36 -4.22222 -4.22222
+			}
+
+			//ATS-1: 1 flight, 0 failures
+			//ATS-3: 1 flight 0 failures
+			//Using Star-13E data I guess
+			TESTFLIGHT:NEEDS[TestLite|TestFlight]
+			{
+				ratedBurnTime = 45
+				ignitionReliabilityStart = 0.985849
+				ignitionReliabilityEnd = 0.997170
+				cycleReliabilityStart = 0.985849
+				cycleReliabilityEnd = 0.997170
+				isSolid = True
+			}
+		}
+	}
+}
diff --git a/GameData/RealismOverhaul/Engine_Configs/SVM1_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/SVM1_Config.cfg
new file mode 100644
index 0000000000..cb9c506980
--- /dev/null
+++ b/GameData/RealismOverhaul/Engine_Configs/SVM1_Config.cfg
@@ -0,0 +1,129 @@
+//	==================================================
+//	SVM-1
+//
+//	Manufacturer: Aerojet
+//
+//	=================================================================================
+//	SVM-1
+//	Intelsat II
+//
+//	Dry Mass: 12.247 Kg
+//	Thrust (SL): ??? kN
+//	Thrust (Vac): 14.4 kN
+//	ISP: ??? SL / 283.6 Vac
+//	Burn Time: 17.7		total burn time, action time ~16.2 seconds
+//	Chamber Pressure: 3.21? MPa
+//	Propellant: CTPB
+//	Prop Ratio: N/A
+//	Throttle: N/A
+//	Nozzle Ratio: 33
+//	Ignitions: 1
+//	=================================================================================
+
+//	Sources:
+
+//	[1] https://arc.aiaa.org/doi/abs/10.2514/3.29411?journalCode=jsr
+//	[2] https://ntrs.nasa.gov/api/citations/19720026092/downloads/19720026092.pdf
+//	[3] https://apps.dtic.mil/sti/citations/AD0654269
+
+//	Used by:
+
+//	Notes:
+
+//	Fiber-wound case
+//	propellant load 75.296 kg
+//	==================================================
+@PART[*]:HAS[#engineType[SVM1]]:FOR[RealismOverhaulEngines]
+{
+	%title = #roSVM1Title	//SVM-1
+	%manufacturer = #roMfrAerojet
+	%description = #roSVM1Desc
+
+	@tags ^= :$: USA aerojet svm1 svm-1 solid srm upper CTPB
+
+	%specLevel = operational
+
+	@MODULE[ModuleEngines*]
+	{
+		%EngineType = SolidBooster
+		%allowShutdown = False
+		%throttleLocked = True
+		%exhaustDamage = True
+	}
+
+	!MODULE[ModuleEngineConfigs],*{}
+	!MODULE[ModuleAlternator],*{}
+	!RESOURCE,*{}
+	!MODULE[ModuleFuelTanks],*{}
+
+	!MODULE[ModuleGimbal],*{}
+
+	MODULE
+	{
+		name = ModuleFuelTanks
+		volume = 42.5401
+		type = CTPB
+		basemass = -1
+		TANK
+		{
+			name = CTPB
+			amount = 42.5401
+			maxAmount = 42.5401
+		}
+	}
+
+	MODULE
+	{
+		name = ModuleEngineConfigs
+		type = ModuleEngines
+		configuration = SVM-1
+		modded = false
+		origMass = 0.012247
+		CONFIG
+		{
+			name = SVM-1
+			specLevel = operational
+			minThrust = 14.4
+			maxThrust = 14.4
+			heatProduction = 100
+			PROPELLANT
+			{
+				name = CTPB
+				ratio = 1.0
+				DrawGauge = True
+			}
+			atmosphereCurve
+			{
+				key = 0 283.6
+				key = 1 150
+			}
+			curveResource = CTPB
+			//Estimated from [1]
+			thrustCurve
+			{
+				key = 0 0.03 6.058514 6.058514
+				key = 0.025 0.5 36.04658 23.46252
+				key = 0.04502564 0.7700775 5.127337 3.570706
+				key = 0.09 0.85 0.9797679 0.923574
+				key = 0.2099487 0.9124664 0.3838807 0.3540598
+				key = 0.375 0.95 0.04794613 -0.02749854
+				key = 0.55 0.9 -0.003237381 0.002946733
+				key = 0.7 1 1.825101E-06 -2.297998E-06
+				key = 0.955 0.9 -0.6943364 -0.05783054
+				key = 1 0.5 -14.88979 0
+			}
+
+			//Intelsat II: 4 flights, 1 failure
+			//Using Star-13E data I guess
+			TESTFLIGHT:NEEDS[TestLite|TestFlight]
+			{
+				ratedBurnTime = 18
+				ignitionReliabilityStart = 0.985849
+				ignitionReliabilityEnd = 0.997170
+				cycleReliabilityStart = 0.985849
+				cycleReliabilityEnd = 0.997170
+				isSolid = True
+			}
+		}
+	}
+}
diff --git a/GameData/RealismOverhaul/Engine_Configs/SVM2_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/SVM2_Config.cfg
new file mode 100644
index 0000000000..fb663bcbed
--- /dev/null
+++ b/GameData/RealismOverhaul/Engine_Configs/SVM2_Config.cfg
@@ -0,0 +1,131 @@
+//	==================================================
+//	SVM-2
+//
+//	Manufacturer: Aerojet
+//
+//	=================================================================================
+//	SVM-2
+//	Intelsat III
+//
+//	Dry Mass: 18.597 Kg
+//	Thrust (SL): ??? kN
+//	Thrust (Vac): 21.5 kN
+//	ISP: ??? SL / 284.4 Vac
+//	Burn Time: 27.6		total burn time, action time ~22 seconds
+//	Chamber Pressure: 3.51? MPa
+//	Propellant: CTPB
+//	Prop Ratio: N/A
+//	Throttle: N/A
+//	Nozzle Ratio: 28
+//	Ignitions: 1
+//	=================================================================================
+
+//	Sources:
+
+//	[1] https://apps.dtic.mil/sti/citations/AD0825758
+//	[2] https://ntrs.nasa.gov/api/citations/19720026092/downloads/19720026092.pdf
+//	[3] https://www.planet4589.org/space/book/lv/engines/motorlist/svm2.html
+
+//	Used by:
+
+//	Notes:
+
+//	Fiber-wound case
+//	propellant load 140.1600 kg
+//	==================================================
+@PART[*]:HAS[#engineType[SVM2]]:FOR[RealismOverhaulEngines]
+{
+	%title = #roSVM2Title	//SVM-2
+	%manufacturer = #roMfrAerojet
+	%description = #roSVM2Desc
+
+	@tags ^= :$: USA aerojet svm2 svm-2 solid srm upper CTPB
+
+	%specLevel = operational
+
+	@MODULE[ModuleEngines*]
+	{
+		%EngineType = SolidBooster
+		%allowShutdown = False
+		%throttleLocked = True
+		%exhaustDamage = True
+	}
+
+	!MODULE[ModuleEngineConfigs],*{}
+	!MODULE[ModuleAlternator],*{}
+	!RESOURCE,*{}
+	!MODULE[ModuleFuelTanks],*{}
+
+	!MODULE[ModuleGimbal],*{}
+
+	MODULE
+	{
+		name = ModuleFuelTanks
+		volume = 79.1864
+		type = CTPB
+		basemass = -1
+		TANK
+		{
+			name = CTPB
+			amount = 79.1864
+			maxAmount = 79.1864
+		}
+	}
+
+	MODULE
+	{
+		name = ModuleEngineConfigs
+		type = ModuleEngines
+		configuration = SVM-2
+		modded = false
+		origMass = 0.012247
+		CONFIG
+		{
+			name = SVM-2
+			specLevel = operational
+			minThrust = 21.5
+			maxThrust = 21.5
+			heatProduction = 100
+			PROPELLANT
+			{
+				name = CTPB
+				ratio = 1.0
+				DrawGauge = True
+			}
+			atmosphereCurve
+			{
+				key = 0 284.4
+				key = 1 150
+			}
+			curveResource = CTPB
+			//Estimated from [1]
+			thrustCurve
+			{
+				key = 0 0.025 6.058514 6.058514
+				key = 0.0449005 0.5 5.576094 4.132279
+				key = 0.1 0.62 1.159201 1.089546
+				key = 0.2 0.72 0.8782169 0.8706302
+				key = 0.3 0.79 0.4573106 0.5466965
+				key = 0.5 0.85 0.04794613 -0.02749854
+				key = 0.6 0.85 -0.003237381 0.002946733
+				key = 0.75 1.01 1.292386 -0.9456888
+				key = 0.87 0.89 -0.8771214 -0.9169018
+				key = 1 0.8 -0.3303636 0
+			}
+
+			//Intelsat III: 7 flights, 1 failure (1 cycle?)
+			//Eutelsat IF-1/2: 2 flights, 0 failures
+			//Using Star-13E data I guess
+			TESTFLIGHT:NEEDS[TestLite|TestFlight]
+			{
+				ratedBurnTime = 28
+				ignitionReliabilityStart = 0.985849
+				ignitionReliabilityEnd = 0.997170
+				cycleReliabilityStart = 0.985849
+				cycleReliabilityEnd = 0.997170
+				isSolid = True
+				techTransfer = SVM-1:50
+			}
+		}
+	}
+}
diff --git a/GameData/RealismOverhaul/Engine_Configs/SVM4A_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/SVM4A_Config.cfg
new file mode 100644
index 0000000000..bbc4847f1f
--- /dev/null
+++ b/GameData/RealismOverhaul/Engine_Configs/SVM4A_Config.cfg
@@ -0,0 +1,130 @@
+//	==================================================
+//	SVM-4A
+//
+//	Manufacturer: Aerojet
+//
+//	=================================================================================
+//	SVM-4A
+//	Intelsat IV/IVA, Comstar D-3/4
+//
+//	Dry Mass: 55.79 kg (expended weight) [1]
+//	Thrust (SL): ??? kN
+//	Thrust (Vac): 67.39 kN (55.51 kN average) [1]
+//	ISP: ??? SL / 294.2 Vac		based on propellant load and total impulse [1]
+//	Burn Time: 33.8	action time? [1]
+//	Chamber Pressure: 6.41? MPa
+//	Propellant: CTPB
+//	Prop Ratio: N/A
+//	Throttle: N/A
+//	Nozzle Ratio: 40
+//	Ignitions: 1
+//	=================================================================================
+
+//	Sources:
+
+//	[1] https://ntrs.nasa.gov/api/citations/19720026092/downloads/19720026092.pdf
+//	[2] https://planet4589.org/space/book/lv/engines/motorlist/svm4.html
+
+//	Used by:
+
+//	Notes:
+
+//	Fiber-wound case
+//	propellant load 650.45 kg
+//	==================================================
+@PART[*]:HAS[#engineType[SVM4A]]:FOR[RealismOverhaulEngines]
+{
+	%title = #roSVM4ATitle	//SVM-4A
+	%manufacturer = #roMfrAerojet
+	%description = #roSVM4ADesc
+
+	@tags ^= :$: USA aerojet svm4a svm-4a solid srm upper CTPB
+
+	%specLevel = operational
+
+	@MODULE[ModuleEngines*]
+	{
+		%EngineType = SolidBooster
+		%allowShutdown = False
+		%throttleLocked = True
+		%exhaustDamage = True
+	}
+
+	!MODULE[ModuleEngineConfigs],*{}
+	!MODULE[ModuleAlternator],*{}
+	!RESOURCE,*{}
+	!MODULE[ModuleFuelTanks],*{}
+
+	!MODULE[ModuleGimbal],*{}
+
+	MODULE
+	{
+		name = ModuleFuelTanks
+		volume = 367.49
+		type = CTPB
+		basemass = -1
+		TANK
+		{
+			name = CTPB
+			amount = 367.49
+			maxAmount = 367.49
+		}
+	}
+
+	MODULE
+	{
+		name = ModuleEngineConfigs
+		type = ModuleEngines
+		configuration = SVM-4A
+		modded = false
+		origMass = 0.05579
+		CONFIG
+		{
+			name = SVM-4A
+			specLevel = operational
+			minThrust = 67.39
+			maxThrust = 67.39
+			heatProduction = 100
+			PROPELLANT
+			{
+				name = CTPB
+				ratio = 1.0
+				DrawGauge = True
+			}
+			atmosphereCurve
+			{
+				key = 0 294.2
+				key = 1 150
+			}
+			curveResource = CTPB
+			//"Regressive" Same as SVM-2?
+			thrustCurve
+			{
+				key = 0 0.025 6.058514 6.058514
+				key = 0.0449005 0.5 5.576094 4.132279
+				key = 0.1 0.62 1.159201 1.089546
+				key = 0.2 0.72 0.8782169 0.8706302
+				key = 0.3 0.79 0.4573106 0.5466965
+				key = 0.5 0.85 0.04794613 -0.02749854
+				key = 0.6 0.85 -0.003237381 0.002946733
+				key = 0.75 1.01 1.292386 -0.9456888
+				key = 0.87 0.89 -0.8771214 -0.9169018
+				key = 1 0.8 -0.3303636 0
+			}
+
+			//Intelsat III: 7 flights, 1 failure (1 cycle?)
+			//Eutelsat IF-1/2: 2 flights, 0 failures
+			//Using Star-13E data I guess
+			TESTFLIGHT:NEEDS[TestLite|TestFlight]
+			{
+				ratedBurnTime = 40
+				ignitionReliabilityStart = 0.985849
+				ignitionReliabilityEnd = 0.997170
+				cycleReliabilityStart = 0.985849
+				cycleReliabilityEnd = 0.997170
+				isSolid = True
+				techTransfer = SVM-2,SVM-1:50
+			}
+		}
+	}
+}
diff --git a/GameData/RealismOverhaul/Engine_Configs/SVM5_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/SVM5_Config.cfg
new file mode 100644
index 0000000000..08ad3db22b
--- /dev/null
+++ b/GameData/RealismOverhaul/Engine_Configs/SVM5_Config.cfg
@@ -0,0 +1,329 @@
+//	==================================================
+//	SVM-5
+//
+//	Manufacturer: Aerojet
+//
+//	=================================================================================
+//	SVM-5
+//	SMS/GOES
+//
+//	Dry Mass: 24.95 kg (expended weight) [1]
+//	Thrust (SL): ??? kN
+//	Thrust (Vac): 32.16 kN (18.90 kN average) [1]
+//	ISP: ??? SL / 290.4 Vac		based on propellant load and total impulse [1]
+//	Burn Time: 37.3		action time? [1]
+//	Chamber Pressure: 5.24? MPa
+//	Propellant: CTPB
+//	Prop Ratio: N/A
+//	Throttle: N/A
+//	Nozzle Ratio: 27
+//	Ignitions: 1
+//	=================================================================================
+
+//	Sources:
+
+//	[1] https://ntrs.nasa.gov/api/citations/19720026092/downloads/19720026092.pdf
+//	[2] https://www.planet4589.org/space/book/lv/engines/motorlist/fw5.html
+
+//	Used by:
+
+//	Notes:
+
+//	Fiber-wound case
+//	propellant load 294.84 kg
+//	==================================================
+@PART[*]:HAS[#engineType[SVM5]]:FOR[RealismOverhaulEngines]
+{
+	%title = #roSVM5Title	//SVM-5
+	%manufacturer = #roMfrAerojet
+	%description = #roSVM5Desc
+
+	@tags ^= :$: USA aerojet svm5 svm-5 solid srm upper CTPB
+
+	%specLevel = operational
+
+	@MODULE[ModuleEngines*]
+	{
+		%EngineType = SolidBooster
+		%allowShutdown = False
+		%throttleLocked = True
+		%exhaustDamage = True
+	}
+
+	!MODULE[ModuleEngineConfigs],*{}
+	!MODULE[ModuleAlternator],*{}
+	!RESOURCE,*{}
+	!MODULE[ModuleFuelTanks],*{}
+
+	!MODULE[ModuleGimbal],*{}
+
+	MODULE
+	{
+		name = ModuleFuelTanks
+		volume = 166.58
+		type = CTPB
+		basemass = -1
+		TANK
+		{
+			name = CTPB
+			amount = 166.58
+			maxAmount = 166.58
+		}
+	}
+
+	MODULE
+	{
+		name = ModuleEngineConfigs
+		type = ModuleEngines
+		configuration = SVM-5
+		modded = false
+		origMass = 0.02495
+		CONFIG
+		{
+			name = SVM-5
+			specLevel = operational
+			minThrust = 32.16
+			maxThrust = 32.16
+			heatProduction = 100
+			PROPELLANT
+			{
+				name = CTPB
+				ratio = 1.0
+				DrawGauge = True
+			}
+			atmosphereCurve
+			{
+				key = 0 290.4
+				key = 1 150
+			}
+			curveResource = CTPB
+			//"progressive" Same as Star27?
+			thrustCurve
+			{
+				key =	1	0.59662
+				key =	0.995	0.9124
+				key =	0.99	0.9155
+				key =	0.985	0.9096
+				key =	0.98	0.868
+				key =	0.975	0.8615
+				key =	0.97	0.878
+				key =	0.965	0.8966
+				key =	0.96	0.9148
+				key =	0.955	0.9327
+				key =	0.95	0.9503
+				key =	0.945	0.9653
+				key =	0.94	0.98
+				key =	0.935	0.9945
+				key =	0.93	1
+				key =	0.925	1
+				key =	0.92	0.9976
+				key =	0.915	0.9957
+				key =	0.91	0.9933
+				key =	0.905	0.9909
+				key =	0.9	0.9885
+				key =	0.895	0.986
+				key =	0.89	0.9831
+				key =	0.885	0.9807
+				key =	0.88	0.9783
+				key =	0.875	0.9736
+				key =	0.87	0.971
+				key =	0.865	0.9684
+				key =	0.86	0.9638
+				key =	0.855	0.9608
+				key =	0.85	0.9566
+				key =	0.845	0.9542
+				key =	0.84	0.9503
+				key =	0.835	0.9469
+				key =	0.83	0.9423
+				key =	0.825	0.9395
+				key =	0.82	0.9348
+				key =	0.815	0.9313
+				key =	0.81	0.9275
+				key =	0.805	0.9251
+				key =	0.8	0.9203
+				key =	0.795	0.9171
+				key =	0.79	0.913
+				key =	0.785	0.9085
+				key =	0.78	0.9054
+				key =	0.775	0.9023
+				key =	0.77	0.8985
+				key =	0.765	0.8937
+				key =	0.76	0.8913
+				key =	0.755	0.8871
+				key =	0.75	0.8841
+				key =	0.745	0.8805
+				key =	0.74	0.8768
+				key =	0.735	0.8737
+				key =	0.73	0.8695
+				key =	0.725	0.8671
+				key =	0.72	0.8671
+				key =	0.715	0.8671
+				key =	0.71	0.8681
+				key =	0.705	0.8695
+				key =	0.7	0.8695
+				key =	0.695	0.8719
+				key =	0.69	0.8719
+				key =	0.685	0.8743
+				key =	0.68	0.8765
+				key =	0.675	0.8768
+				key =	0.67	0.8792
+				key =	0.665	0.8816
+				key =	0.66	0.8826
+				key =	0.655	0.884
+				key =	0.65	0.8864
+				key =	0.645	0.8888
+				key =	0.64	0.8912
+				key =	0.635	0.8936
+				key =	0.63	0.8948
+				key =	0.625	0.898
+				key =	0.62	0.8988
+				key =	0.615	0.9009
+				key =	0.61	0.9033
+				key =	0.605	0.9057
+				key =	0.6	0.9081
+				key =	0.595	0.9105
+				key =	0.59	0.9126
+				key =	0.585	0.9154
+				key =	0.58	0.9163
+				key =	0.575	0.9179
+				key =	0.57	0.9203
+				key =	0.565	0.9227
+				key =	0.56	0.9251
+				key =	0.555	0.9275
+				key =	0.55	0.9299
+				key =	0.545	0.9323
+				key =	0.54	0.9347
+				key =	0.535	0.9353
+				key =	0.53	0.9395
+				key =	0.525	0.9395
+				key =	0.52	0.9395
+				key =	0.515	0.9395
+				key =	0.51	0.9395
+				key =	0.505	0.9395
+				key =	0.5	0.9395
+				key =	0.495	0.9395
+				key =	0.49	0.9395
+				key =	0.485	0.9395
+				key =	0.48	0.9395
+				key =	0.475	0.9395
+				key =	0.47	0.9419
+				key =	0.465	0.9419
+				key =	0.46	0.9419
+				key =	0.455	0.9443
+				key =	0.45	0.9443
+				key =	0.445	0.9448
+				key =	0.44	0.9467
+				key =	0.435	0.9467
+				key =	0.43	0.9491
+				key =	0.425	0.9491
+				key =	0.42	0.9513
+				key =	0.415	0.9515
+				key =	0.41	0.9515
+				key =	0.405	0.9515
+				key =	0.4	0.9515
+				key =	0.395	0.9515
+				key =	0.39	0.9515
+				key =	0.385	0.9515
+				key =	0.38	0.9515
+				key =	0.375	0.9515
+				key =	0.37	0.9515
+				key =	0.365	0.9515
+				key =	0.36	0.9491
+				key =	0.355	0.9491
+				key =	0.35	0.9491
+				key =	0.345	0.9491
+				key =	0.34	0.9491
+				key =	0.335	0.9491
+				key =	0.33	0.9491
+				key =	0.325	0.9491
+				key =	0.32	0.9491
+				key =	0.315	0.9491
+				key =	0.31	0.9491
+				key =	0.305	0.9467
+				key =	0.3	0.9467
+				key =	0.295	0.9467
+				key =	0.29	0.9467
+				key =	0.285	0.9467
+				key =	0.28	0.9467
+				key =	0.275	0.9467
+				key =	0.27	0.9467
+				key =	0.265	0.9467
+				key =	0.26	0.9467
+				key =	0.255	0.9443
+				key =	0.25	0.9443
+				key =	0.245	0.9443
+				key =	0.24	0.9443
+				key =	0.235	0.9443
+				key =	0.23	0.9443
+				key =	0.225	0.9443
+				key =	0.22	0.9443
+				key =	0.215	0.9443
+				key =	0.21	0.9443
+				key =	0.205	0.9443
+				key =	0.2	0.9443
+				key =	0.195	0.9443
+				key =	0.19	0.9419
+				key =	0.185	0.9419
+				key =	0.18	0.9419
+				key =	0.175	0.9419
+				key =	0.17	0.9419
+				key =	0.165	0.9419
+				key =	0.16	0.9395
+				key =	0.155	0.9395
+				key =	0.15	0.938
+				key =	0.145	0.9371
+				key =	0.14	0.9347
+				key =	0.135	0.9347
+				key =	0.13	0.9323
+				key =	0.125	0.931
+				key =	0.12	0.9299
+				key =	0.115	0.9275
+				key =	0.11	0.9271
+				key =	0.105	0.9251
+				key =	0.1	0.9227
+				key =	0.095	0.9203
+				key =	0.09	0.9201
+				key =	0.085	0.9179
+				key =	0.08	0.9155
+				key =	0.075	0.9131
+				key =	0.07	0.9107
+				key =	0.065	0.9098
+				key =	0.06	0.9058
+				key =	0.055	0.8987
+				key =	0.05	0.8907
+				key =	0.045	0.8801
+				key =	0.04	0.8695
+				key =	0.035	0.8563
+				key =	0.03	0.8405
+				key =	0.025	0.8152
+				key =	0.02	0.7252
+				key =	0.015	0.5715
+				key =	0.01	0.4156
+				key =	0.009	0.3848
+				key =	0.008	0.35
+				key =	0.007	0.3182
+				key =	0.006	0.2825
+				key =	0.005	0.2465
+				key =	0.004	0.2043
+				key =	0.003	0.1574
+				key =	0.002	0.0915
+				key =	0.001	0.0457
+				key =	0	0.005
+			}
+
+			//SMS-1/2: 2 flights, 0 failure
+			//GOES-1/2/3: 3 flights, 0 failures
+			//Using Star-27 data I guess
+			TESTFLIGHT:NEEDS[TestLite|TestFlight]
+			{
+				ratedBurnTime = 37
+				ignitionReliabilityStart = 0.987500
+				ignitionReliabilityEnd = 0.997500
+				cycleReliabilityStart = 0.987500
+				cycleReliabilityEnd = 0.997500
+				isSolid = True
+				techTransfer = SVM-4A,SVM-2,SVM-1:50
+			}
+		}
+	}
+}
diff --git a/GameData/RealismOverhaul/Engine_Configs/Star12A_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/Star12A_Config.cfg
new file mode 100644
index 0000000000..2105ff7feb
--- /dev/null
+++ b/GameData/RealismOverhaul/Engine_Configs/Star12A_Config.cfg
@@ -0,0 +1,330 @@
+//	==================================================
+//	Star 12A
+//
+//	Manufacturer: Thiokol
+//
+//	=================================================================================
+//	Star 12A
+//	SRV Mk V (Keyhole-7)?
+//
+//	Dry Mass: 11.2 kg	[3]
+//	Thrust (SL): ??? kN
+//	Thrust (Vac): 7.25 kN max? [1] (5.80 kN average?)
+//	ISP: ??? SL / 270 Vac	[1/3/4]
+//	Burn Time: 10.5	based on total impulse from [4]
+//	Chamber Pressure: ??? MPa
+//	Propellant: HTPB	TP-H-3340 [1]
+//	Prop Ratio: N/A
+//	Throttle: N/A
+//	Nozzle Ratio: ???
+//	Ignitions: 1
+//	=================================================================================
+
+//	Sources:
+
+//	[1] http://www.astronautix.com/s/star12a.html
+//	[2] https://www.b14643.de/Spacerockets/Specials/ATK-Thiokol_STAR/index.htm
+//	[3] https://space.skyrocket.de/doc_eng/star-12.htm
+//	[4] https://web.archive.org/web/19990501230758/http://www.thiokol.com/StarPerf.htmhttps://web.archive.org/web/19990501230758/http://www.thiokol.com/StarPerf.htm
+
+//	Used by:
+
+//	Notes:
+
+//	propellant load 22.77 kg [4]
+//	==================================================
+@PART[*]:HAS[#engineType[Star-12A]]:FOR[RealismOverhaulEngines]
+{
+	%title = #roStar-12ATitle	//STAR 12A
+	%manufacturer = #roMfrThiokol
+	%description = #roStar-12ADesc
+
+	@tags ^= :$: USA thiokol star 12a star12a te-m-236-3 solid srm upper pspc
+
+	%specLevel = operational
+
+	@MODULE[ModuleEngines*]
+	{
+		%EngineType = SolidBooster
+		%allowShutdown = False
+		%throttleLocked = True
+		%exhaustDamage = True
+	}
+
+	!MODULE[ModuleEngineConfigs],*{}
+	!MODULE[ModuleAlternator],*{}
+	!RESOURCE,*{}
+	!MODULE[ModuleFuelTanks],*{}
+
+	!MODULE[ModuleGimbal],*{}
+
+	MODULE
+	{
+		name = ModuleFuelTanks
+		volume = 12.8644
+		type = HTPB
+		basemass = -1
+		TANK
+		{
+			name = HTPB
+			amount = 12.8644
+			maxAmount = 12.8644
+		}
+	}
+
+	MODULE
+	{
+		name = ModuleEngineConfigs
+		type = ModuleEngines
+		configuration = Star-12A
+		modded = false
+		origMass = 0.0112
+		CONFIG
+		{
+			name = Star-12A
+			description = TE-M-236-3
+			specLevel = operational
+			minThrust = 7.25
+			maxThrust = 7.25
+			heatProduction = 100
+			PROPELLANT
+			{
+				name = HTPB
+				ratio = 1.0
+				DrawGauge = True
+			}
+			atmosphereCurve
+			{
+				key = 0 270
+				key = 1 150
+			}
+			curveResource = HTPB
+			//Same as Star-13B I guess
+			thrustCurve
+			{
+				key =	1	0.45566
+				key =	0.995	0.58476
+				key =	0.99	0.81886
+				key =	0.985	0.86546
+				key =	0.98	0.83966
+				key =	0.975	0.77616
+				key =	0.97	0.78116
+				key =	0.965	0.79086
+				key =	0.96	0.79826
+				key =	0.955	0.80436
+				key =	0.95	0.80746
+				key =	0.945	0.81056
+				key =	0.94	0.81366
+				key =	0.935	0.81366
+				key =	0.93	0.81056
+				key =	0.925	0.80746
+				key =	0.92	0.80436
+				key =	0.915	0.79836
+				key =	0.91	0.79496
+				key =	0.905	0.78836
+				key =	0.9	0.78166
+				key =	0.895	0.77486
+				key =	0.89	0.76796
+				key =	0.885	0.76146
+				key =	0.88	0.75536
+				key =	0.875	0.74926
+				key =	0.87	0.74176
+				key =	0.865	0.73396
+				key =	0.86	0.72786
+				key =	0.855	0.72136
+				key =	0.85	0.71316
+				key =	0.845	0.70786
+				key =	0.84	0.70026
+				key =	0.835	0.69416
+				key =	0.83	0.68806
+				key =	0.825	0.68216
+				key =	0.82	0.67606
+				key =	0.815	0.66966
+				key =	0.81	0.66356
+				key =	0.805	0.65746
+				key =	0.8	0.65136
+				key =	0.795	0.64616
+				key =	0.79	0.64216
+				key =	0.785	0.63906
+				key =	0.78	0.63696
+				key =	0.775	0.63576
+				key =	0.77	0.63296
+				key =	0.765	0.62986
+				key =	0.76	0.62986
+				key =	0.755	0.62676
+				key =	0.75	0.62676
+				key =	0.745	0.62676
+				key =	0.74	0.62676
+				key =	0.735	0.62676
+				key =	0.73	0.62676
+				key =	0.725	0.62986
+				key =	0.72	0.63296
+				key =	0.715	0.63606
+				key =	0.71	0.63906
+				key =	0.705	0.64226
+				key =	0.7	0.64536
+				key =	0.695	0.64846
+				key =	0.69	0.65456
+				key =	0.685	0.65766
+				key =	0.68	0.66226
+				key =	0.675	0.66686
+				key =	0.67	0.67206
+				key =	0.665	0.67606
+				key =	0.66	0.68216
+				key =	0.655	0.68526
+				key =	0.65	0.69136
+				key =	0.645	0.69566
+				key =	0.64	0.70056
+				key =	0.635	0.70666
+				key =	0.63	0.70976
+				key =	0.625	0.71416
+				key =	0.62	0.71886
+				key =	0.615	0.72426
+				key =	0.61	0.72806
+				key =	0.605	0.73116
+				key =	0.6	0.73556
+				key =	0.595	0.74026
+				key =	0.59	0.74336
+				key =	0.585	0.74916
+				key =	0.58	0.75256
+				key =	0.575	0.75566
+				key =	0.57	0.75876
+				key =	0.565	0.76186
+				key =	0.56	0.76706
+				key =	0.555	0.77096
+				key =	0.55	0.77406
+				key =	0.545	0.77716
+				key =	0.54	0.78026
+				key =	0.535	0.78336
+				key =	0.53	0.78946
+				key =	0.525	0.79256
+				key =	0.52	0.79566
+				key =	0.515	0.79876
+				key =	0.51	0.80186
+				key =	0.505	0.80666
+				key =	0.5	0.81106
+				key =	0.495	0.81416
+				key =	0.49	0.81726
+				key =	0.485	0.82036
+				key =	0.48	0.82496
+				key =	0.475	0.82776
+				key =	0.47	0.83256
+				key =	0.465	0.83566
+				key =	0.46	0.83876
+				key =	0.455	0.84186
+				key =	0.45	0.84496
+				key =	0.445	0.84806
+				key =	0.44	0.85206
+				key =	0.435	0.85436
+				key =	0.43	0.85966
+				key =	0.425	0.86336
+				key =	0.42	0.86646
+				key =	0.415	0.86956
+				key =	0.41	0.87266
+				key =	0.405	0.87576
+				key =	0.4	0.87886
+				key =	0.395	0.88196
+				key =	0.39	0.88506
+				key =	0.385	0.88816
+				key =	0.38	0.89126
+				key =	0.375	0.89436
+				key =	0.37	0.89746
+				key =	0.365	0.90056
+				key =	0.36	0.90366
+				key =	0.355	0.90676
+				key =	0.35	0.90986
+				key =	0.345	0.91296
+				key =	0.34	0.91606
+				key =	0.335	0.91836
+				key =	0.33	0.92216
+				key =	0.325	0.92396
+				key =	0.32	0.92516
+				key =	0.315	0.92826
+				key =	0.31	0.93136
+				key =	0.305	0.93446
+				key =	0.3	0.93756
+				key =	0.295	0.93756
+				key =	0.29	0.94066
+				key =	0.285	0.94376
+				key =	0.28	0.94686
+				key =	0.275	0.94706
+				key =	0.27	0.94986
+				key =	0.265	0.95296
+				key =	0.26	0.95576
+				key =	0.255	0.95606
+				key =	0.25	0.95916
+				key =	0.245	0.96116
+				key =	0.24	0.96226
+				key =	0.235	0.96536
+				key =	0.23	0.96536
+				key =	0.225	0.96846
+				key =	0.22	0.96846
+				key =	0.215	0.97156
+				key =	0.21	0.97196
+				key =	0.205	0.97466
+				key =	0.2	0.97466
+				key =	0.195	0.97776
+				key =	0.19	0.97776
+				key =	0.185	0.98086
+				key =	0.18	0.98086
+				key =	0.175	0.98396
+				key =	0.17	0.98396
+				key =	0.165	0.98566
+				key =	0.16	0.98706
+				key =	0.155	0.98706
+				key =	0.15	0.99016
+				key =	0.145	0.99016
+				key =	0.14	0.99016
+				key =	0.135	0.99326
+				key =	0.13	0.99326
+				key =	0.125	0.99636
+				key =	0.12	0.99636
+				key =	0.115	0.99636
+				key =	0.11	0.99946
+				key =	0.105	0.99946
+				key =	0.1	0.99946
+				key =	0.095	1.00256
+				key =	0.09	1.00256
+				key =	0.085	1.00256
+				key =	0.08	1.00256
+				key =	0.075	1.00256
+				key =	0.07	0.99946
+				key =	0.065	0.99636
+				key =	0.06	0.99326
+				key =	0.055	0.98546
+				key =	0.05	0.97576
+				key =	0.045	0.96286
+				key =	0.04	0.94366
+				key =	0.035	0.91926
+				key =	0.03	0.88506
+				key =	0.025	0.83526
+				key =	0.02	0.76376
+				key =	0.015	0.66736
+				key =	0.01	0.53136
+				key =	0.009	0.49766
+				key =	0.008	0.46366
+				key =	0.007	0.42616
+				key =	0.006	0.38516
+				key =	0.005	0.34026
+				key =	0.004	0.29686
+				key =	0.003	0.24616
+				key =	0.002	0.19616
+				key =	0.001	0.13536
+				key =	0	0.01156
+			}
+
+			//Flight performance classified [4]
+			//Guess
+			TESTFLIGHT:NEEDS[TestLite|TestFlight]
+			{
+				ratedBurnTime = 11
+				ignitionReliabilityStart = 0.965
+				ignitionReliabilityEnd = 0.999
+				cycleReliabilityStart = 0.965
+				cycleReliabilityEnd = 0.999
+				isSolid = True
+				techTransfer = Star-12:50
+			}
+		}
+	}
+}
diff --git a/GameData/RealismOverhaul/Engine_Configs/Star12_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/Star12_Config.cfg
new file mode 100644
index 0000000000..cd38f82f22
--- /dev/null
+++ b/GameData/RealismOverhaul/Engine_Configs/Star12_Config.cfg
@@ -0,0 +1,331 @@
+//	==================================================
+//	Star 12
+//
+//	Manufacturer: Thiokol
+//
+//	=================================================================================
+//	Star 12
+//	SRV Mk IV (Keyhole-1/2/3/4/5/6)
+//
+//	Dry Mass: 9.4 kg	[3]
+//	Thrust (SL): ??? kN
+//	Thrust (Vac): 5.56 kN max? [1] (4.45 kN average? [2])
+//	ISP: ??? SL / 252 Vac	[1/3/4]
+//	Burn Time: 10.35	based on total impulse from [4]
+//	Chamber Pressure: ??? MPa
+//	Propellant: PSPC	TP-G-3085 [1]. PSPC I guess?
+//	Prop Ratio: N/A
+//	Throttle: N/A
+//	Nozzle Ratio: ???
+//	Ignitions: 1
+//	=================================================================================
+
+//	Sources:
+
+//	[1] http://www.astronautix.com/s/star12.html
+//	[2] https://www.b14643.de/Spacerockets/Specials/ATK-Thiokol_STAR/index.htm
+//	[3] https://space.skyrocket.de/doc_eng/star-12.htm
+//	[4] https://web.archive.org/web/19990501230758/http://www.thiokol.com/StarPerf.htmhttps://web.archive.org/web/19990501230758/http://www.thiokol.com/StarPerf.htm
+
+//	Used by:
+
+//	Notes:
+
+//	propellant load 18.28 kg [2/4]
+//	==================================================
+@PART[*]:HAS[#engineType[Star-12]]:FOR[RealismOverhaulEngines]
+{
+	%title = #roStar-12Title	//STAR 12
+	%manufacturer = #roMfrThiokol
+	%description = #roStar-12Desc
+
+	@tags ^= :$: USA thiokol star 12 star12 te-m-236 solid srm upper pspc
+
+	%specLevel = operational
+
+	@MODULE[ModuleEngines*]
+	{
+		%EngineType = SolidBooster
+		%allowShutdown = False
+		%throttleLocked = True
+		%exhaustDamage = True
+	}
+
+	!MODULE[ModuleEngineConfigs],*{}
+	!MODULE[ModuleAlternator],*{}
+	!RESOURCE,*{}
+	!MODULE[ModuleFuelTanks],*{}
+
+	!MODULE[ModuleGimbal],*{}
+
+	MODULE
+	{
+		name = ModuleFuelTanks
+		volume = 10.5057
+		type = PSPC
+		basemass = -1
+		TANK
+		{
+			name = PSPC
+			amount = 10.5057
+			maxAmount = 10.5057
+		}
+	}
+
+	MODULE
+	{
+		name = ModuleEngineConfigs
+		type = ModuleEngines
+		configuration = Star-12
+		modded = false
+		origMass = 0.0094
+		CONFIG
+		{
+			name = Star-12
+			description = TE-M-236
+			specLevel = operational
+			minThrust = 5.56
+			maxThrust = 5.56
+			heatProduction = 100
+			PROPELLANT
+			{
+				name = PSPC
+				ratio = 1.0
+				DrawGauge = True
+			}
+			atmosphereCurve
+			{
+				key = 0 252
+				key = 1 100
+			}
+			curveResource = PSPC
+			//Same as Star-13B I guess
+			thrustCurve
+			{
+				key =	1	0.45566
+				key =	0.995	0.58476
+				key =	0.99	0.81886
+				key =	0.985	0.86546
+				key =	0.98	0.83966
+				key =	0.975	0.77616
+				key =	0.97	0.78116
+				key =	0.965	0.79086
+				key =	0.96	0.79826
+				key =	0.955	0.80436
+				key =	0.95	0.80746
+				key =	0.945	0.81056
+				key =	0.94	0.81366
+				key =	0.935	0.81366
+				key =	0.93	0.81056
+				key =	0.925	0.80746
+				key =	0.92	0.80436
+				key =	0.915	0.79836
+				key =	0.91	0.79496
+				key =	0.905	0.78836
+				key =	0.9	0.78166
+				key =	0.895	0.77486
+				key =	0.89	0.76796
+				key =	0.885	0.76146
+				key =	0.88	0.75536
+				key =	0.875	0.74926
+				key =	0.87	0.74176
+				key =	0.865	0.73396
+				key =	0.86	0.72786
+				key =	0.855	0.72136
+				key =	0.85	0.71316
+				key =	0.845	0.70786
+				key =	0.84	0.70026
+				key =	0.835	0.69416
+				key =	0.83	0.68806
+				key =	0.825	0.68216
+				key =	0.82	0.67606
+				key =	0.815	0.66966
+				key =	0.81	0.66356
+				key =	0.805	0.65746
+				key =	0.8	0.65136
+				key =	0.795	0.64616
+				key =	0.79	0.64216
+				key =	0.785	0.63906
+				key =	0.78	0.63696
+				key =	0.775	0.63576
+				key =	0.77	0.63296
+				key =	0.765	0.62986
+				key =	0.76	0.62986
+				key =	0.755	0.62676
+				key =	0.75	0.62676
+				key =	0.745	0.62676
+				key =	0.74	0.62676
+				key =	0.735	0.62676
+				key =	0.73	0.62676
+				key =	0.725	0.62986
+				key =	0.72	0.63296
+				key =	0.715	0.63606
+				key =	0.71	0.63906
+				key =	0.705	0.64226
+				key =	0.7	0.64536
+				key =	0.695	0.64846
+				key =	0.69	0.65456
+				key =	0.685	0.65766
+				key =	0.68	0.66226
+				key =	0.675	0.66686
+				key =	0.67	0.67206
+				key =	0.665	0.67606
+				key =	0.66	0.68216
+				key =	0.655	0.68526
+				key =	0.65	0.69136
+				key =	0.645	0.69566
+				key =	0.64	0.70056
+				key =	0.635	0.70666
+				key =	0.63	0.70976
+				key =	0.625	0.71416
+				key =	0.62	0.71886
+				key =	0.615	0.72426
+				key =	0.61	0.72806
+				key =	0.605	0.73116
+				key =	0.6	0.73556
+				key =	0.595	0.74026
+				key =	0.59	0.74336
+				key =	0.585	0.74916
+				key =	0.58	0.75256
+				key =	0.575	0.75566
+				key =	0.57	0.75876
+				key =	0.565	0.76186
+				key =	0.56	0.76706
+				key =	0.555	0.77096
+				key =	0.55	0.77406
+				key =	0.545	0.77716
+				key =	0.54	0.78026
+				key =	0.535	0.78336
+				key =	0.53	0.78946
+				key =	0.525	0.79256
+				key =	0.52	0.79566
+				key =	0.515	0.79876
+				key =	0.51	0.80186
+				key =	0.505	0.80666
+				key =	0.5	0.81106
+				key =	0.495	0.81416
+				key =	0.49	0.81726
+				key =	0.485	0.82036
+				key =	0.48	0.82496
+				key =	0.475	0.82776
+				key =	0.47	0.83256
+				key =	0.465	0.83566
+				key =	0.46	0.83876
+				key =	0.455	0.84186
+				key =	0.45	0.84496
+				key =	0.445	0.84806
+				key =	0.44	0.85206
+				key =	0.435	0.85436
+				key =	0.43	0.85966
+				key =	0.425	0.86336
+				key =	0.42	0.86646
+				key =	0.415	0.86956
+				key =	0.41	0.87266
+				key =	0.405	0.87576
+				key =	0.4	0.87886
+				key =	0.395	0.88196
+				key =	0.39	0.88506
+				key =	0.385	0.88816
+				key =	0.38	0.89126
+				key =	0.375	0.89436
+				key =	0.37	0.89746
+				key =	0.365	0.90056
+				key =	0.36	0.90366
+				key =	0.355	0.90676
+				key =	0.35	0.90986
+				key =	0.345	0.91296
+				key =	0.34	0.91606
+				key =	0.335	0.91836
+				key =	0.33	0.92216
+				key =	0.325	0.92396
+				key =	0.32	0.92516
+				key =	0.315	0.92826
+				key =	0.31	0.93136
+				key =	0.305	0.93446
+				key =	0.3	0.93756
+				key =	0.295	0.93756
+				key =	0.29	0.94066
+				key =	0.285	0.94376
+				key =	0.28	0.94686
+				key =	0.275	0.94706
+				key =	0.27	0.94986
+				key =	0.265	0.95296
+				key =	0.26	0.95576
+				key =	0.255	0.95606
+				key =	0.25	0.95916
+				key =	0.245	0.96116
+				key =	0.24	0.96226
+				key =	0.235	0.96536
+				key =	0.23	0.96536
+				key =	0.225	0.96846
+				key =	0.22	0.96846
+				key =	0.215	0.97156
+				key =	0.21	0.97196
+				key =	0.205	0.97466
+				key =	0.2	0.97466
+				key =	0.195	0.97776
+				key =	0.19	0.97776
+				key =	0.185	0.98086
+				key =	0.18	0.98086
+				key =	0.175	0.98396
+				key =	0.17	0.98396
+				key =	0.165	0.98566
+				key =	0.16	0.98706
+				key =	0.155	0.98706
+				key =	0.15	0.99016
+				key =	0.145	0.99016
+				key =	0.14	0.99016
+				key =	0.135	0.99326
+				key =	0.13	0.99326
+				key =	0.125	0.99636
+				key =	0.12	0.99636
+				key =	0.115	0.99636
+				key =	0.11	0.99946
+				key =	0.105	0.99946
+				key =	0.1	0.99946
+				key =	0.095	1.00256
+				key =	0.09	1.00256
+				key =	0.085	1.00256
+				key =	0.08	1.00256
+				key =	0.075	1.00256
+				key =	0.07	0.99946
+				key =	0.065	0.99636
+				key =	0.06	0.99326
+				key =	0.055	0.98546
+				key =	0.05	0.97576
+				key =	0.045	0.96286
+				key =	0.04	0.94366
+				key =	0.035	0.91926
+				key =	0.03	0.88506
+				key =	0.025	0.83526
+				key =	0.02	0.76376
+				key =	0.015	0.66736
+				key =	0.01	0.53136
+				key =	0.009	0.49766
+				key =	0.008	0.46366
+				key =	0.007	0.42616
+				key =	0.006	0.38516
+				key =	0.005	0.34026
+				key =	0.004	0.29686
+				key =	0.003	0.24616
+				key =	0.002	0.19616
+				key =	0.001	0.13536
+				key =	0	0.01156
+			}
+
+			//510 flights! [4]
+			//Unfortunately mostly classified.
+			//Guess
+			TESTFLIGHT:NEEDS[TestLite|TestFlight]
+			{
+				ratedBurnTime = 11
+				ignitionReliabilityStart = 0.965
+				ignitionReliabilityEnd = 0.999
+				cycleReliabilityStart = 0.965
+				cycleReliabilityEnd = 0.999
+				isSolid = True
+				//techTransfer = Star-13E:50
+			}
+		}
+	}
+}
diff --git a/GameData/RealismOverhaul/Engine_Configs/Star13A_Config .cfg b/GameData/RealismOverhaul/Engine_Configs/Star13A_Config .cfg
index 296bc5a415..7197405337 100644
--- a/GameData/RealismOverhaul/Engine_Configs/Star13A_Config .cfg	
+++ b/GameData/RealismOverhaul/Engine_Configs/Star13A_Config .cfg	
@@ -321,7 +321,7 @@
 				cycleReliabilityStart = 0.985849
 				cycleReliabilityEnd = 0.997170
 				isSolid = True
-				techTransfer = Star-13,Star-13E:50
+				techTransfer = Star-13,Star-13E,Star-13D:50
 			}
 		}
 	}
diff --git a/GameData/RealismOverhaul/Engine_Configs/Star13B_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/Star13B_Config.cfg
index f9b3f8bcdc..5e27c425c8 100644
--- a/GameData/RealismOverhaul/Engine_Configs/Star13B_Config.cfg
+++ b/GameData/RealismOverhaul/Engine_Configs/Star13B_Config.cfg
@@ -319,7 +319,7 @@
 				cycleReliabilityStart = 0.98
 				cycleReliabilityEnd = 0.9999
 				isSolid = True
-				techTransfer = Star-13A,Star-13,Star-13E:50
+				techTransfer = Star-13A,Star-13,Star-13E,Star-13D:50
 			}
 		}
 	}
diff --git a/GameData/RealismOverhaul/Engine_Configs/Star13D_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/Star13D_Config.cfg
new file mode 100644
index 0000000000..b8e842d2ce
--- /dev/null
+++ b/GameData/RealismOverhaul/Engine_Configs/Star13D_Config.cfg
@@ -0,0 +1,333 @@
+//	==================================================
+//	Star 13D
+//
+//	Manufacturer: Thiokol
+//
+//	=================================================================================
+//	Star 13D
+//	Syncom 1
+//
+//	Dry Mass: 6.7 kg
+//	Thrust (SL): ??? kN
+//	Thrust (Vac): 3.06 kN	based on total impulse
+//	ISP: 211? SL / 223 Vac
+//	Burn Time: 25?		same as Star-13E?
+//	Chamber Pressure: ??? MPa
+//	Propellant: PSPC	same as Star-13E?
+//	Prop Ratio: N/A
+//	Throttle: N/A
+//	Nozzle Ratio: ???
+//	Ignitions: 1
+//	=================================================================================
+
+//	Sources:
+
+//	[1] http://www.astronautix.com/s/star13.html
+//	[2] https://space.skyrocket.de/doc_eng/star-13.htm
+//	[3] https://web.archive.org/web/19990501230758/http://www.thiokol.com/StarPerf.htm
+//	[4] https://www.b14643.de/Spacerockets/Specials/ATK-Thiokol_STAR/index.htm
+
+//	Used by:
+
+//	Notes:
+
+//	63.0 lbs (28.60 kg) propellant
+//	==================================================
+@PART[*]:HAS[#engineType[Star-13D]]:FOR[RealismOverhaulEngines]
+{
+	%title = #roStar-13DTitle	//Star-13D
+	%manufacturer = #roMfrThiokol
+	%description = #roStar-13DDesc
+
+	@tags ^= :$: USA thiokol star 13d star13d te-m-375 solid srm upper pspc
+
+	%specLevel = operational
+
+	@MODULE[ModuleEngines*]
+	{
+		%EngineType = SolidBooster
+		%allowShutdown = False
+		%throttleLocked = True
+		%exhaustDamage = True
+	}
+
+	!MODULE[ModuleEngineConfigs],*{}
+	!MODULE[ModuleAlternator],*{}
+	!RESOURCE,*{}
+	!MODULE[ModuleFuelTanks],*{}
+
+	!MODULE[ModuleGimbal],*{}
+
+	MODULE
+	{
+		name = ModuleFuelTanks
+		volume = 16.4368
+		type = PSPC
+		basemass = -1
+		TANK
+		{
+			name = PSPC
+			amount = 16.4368
+			maxAmount = 16.4368
+		}
+	}
+
+	MODULE
+	{
+		name = ModuleEngineConfigs
+		type = ModuleEngines
+		configuration = Star-13D
+		modded = false
+		origMass = 0.0067
+
+		CONFIG
+		{
+			name = Star-13D
+			description = TE-M-375
+			specLevel = operational
+			minThrust = 3.06
+			maxThrust = 3.06
+			heatProduction = 100
+
+			PROPELLANT
+			{
+				name = PSPC
+				ratio = 1
+				DrawGauge = True
+			}
+
+			atmosphereCurve
+			{
+				key = 0 223
+				key = 1 150
+			}
+			
+			curveResource = PSPC
+			//Same as Star-13B I guess
+			thrustCurve
+			{
+				key =	1	0.45566
+				key =	0.995	0.58476
+				key =	0.99	0.81886
+				key =	0.985	0.86546
+				key =	0.98	0.83966
+				key =	0.975	0.77616
+				key =	0.97	0.78116
+				key =	0.965	0.79086
+				key =	0.96	0.79826
+				key =	0.955	0.80436
+				key =	0.95	0.80746
+				key =	0.945	0.81056
+				key =	0.94	0.81366
+				key =	0.935	0.81366
+				key =	0.93	0.81056
+				key =	0.925	0.80746
+				key =	0.92	0.80436
+				key =	0.915	0.79836
+				key =	0.91	0.79496
+				key =	0.905	0.78836
+				key =	0.9	0.78166
+				key =	0.895	0.77486
+				key =	0.89	0.76796
+				key =	0.885	0.76146
+				key =	0.88	0.75536
+				key =	0.875	0.74926
+				key =	0.87	0.74176
+				key =	0.865	0.73396
+				key =	0.86	0.72786
+				key =	0.855	0.72136
+				key =	0.85	0.71316
+				key =	0.845	0.70786
+				key =	0.84	0.70026
+				key =	0.835	0.69416
+				key =	0.83	0.68806
+				key =	0.825	0.68216
+				key =	0.82	0.67606
+				key =	0.815	0.66966
+				key =	0.81	0.66356
+				key =	0.805	0.65746
+				key =	0.8	0.65136
+				key =	0.795	0.64616
+				key =	0.79	0.64216
+				key =	0.785	0.63906
+				key =	0.78	0.63696
+				key =	0.775	0.63576
+				key =	0.77	0.63296
+				key =	0.765	0.62986
+				key =	0.76	0.62986
+				key =	0.755	0.62676
+				key =	0.75	0.62676
+				key =	0.745	0.62676
+				key =	0.74	0.62676
+				key =	0.735	0.62676
+				key =	0.73	0.62676
+				key =	0.725	0.62986
+				key =	0.72	0.63296
+				key =	0.715	0.63606
+				key =	0.71	0.63906
+				key =	0.705	0.64226
+				key =	0.7	0.64536
+				key =	0.695	0.64846
+				key =	0.69	0.65456
+				key =	0.685	0.65766
+				key =	0.68	0.66226
+				key =	0.675	0.66686
+				key =	0.67	0.67206
+				key =	0.665	0.67606
+				key =	0.66	0.68216
+				key =	0.655	0.68526
+				key =	0.65	0.69136
+				key =	0.645	0.69566
+				key =	0.64	0.70056
+				key =	0.635	0.70666
+				key =	0.63	0.70976
+				key =	0.625	0.71416
+				key =	0.62	0.71886
+				key =	0.615	0.72426
+				key =	0.61	0.72806
+				key =	0.605	0.73116
+				key =	0.6	0.73556
+				key =	0.595	0.74026
+				key =	0.59	0.74336
+				key =	0.585	0.74916
+				key =	0.58	0.75256
+				key =	0.575	0.75566
+				key =	0.57	0.75876
+				key =	0.565	0.76186
+				key =	0.56	0.76706
+				key =	0.555	0.77096
+				key =	0.55	0.77406
+				key =	0.545	0.77716
+				key =	0.54	0.78026
+				key =	0.535	0.78336
+				key =	0.53	0.78946
+				key =	0.525	0.79256
+				key =	0.52	0.79566
+				key =	0.515	0.79876
+				key =	0.51	0.80186
+				key =	0.505	0.80666
+				key =	0.5	0.81106
+				key =	0.495	0.81416
+				key =	0.49	0.81726
+				key =	0.485	0.82036
+				key =	0.48	0.82496
+				key =	0.475	0.82776
+				key =	0.47	0.83256
+				key =	0.465	0.83566
+				key =	0.46	0.83876
+				key =	0.455	0.84186
+				key =	0.45	0.84496
+				key =	0.445	0.84806
+				key =	0.44	0.85206
+				key =	0.435	0.85436
+				key =	0.43	0.85966
+				key =	0.425	0.86336
+				key =	0.42	0.86646
+				key =	0.415	0.86956
+				key =	0.41	0.87266
+				key =	0.405	0.87576
+				key =	0.4	0.87886
+				key =	0.395	0.88196
+				key =	0.39	0.88506
+				key =	0.385	0.88816
+				key =	0.38	0.89126
+				key =	0.375	0.89436
+				key =	0.37	0.89746
+				key =	0.365	0.90056
+				key =	0.36	0.90366
+				key =	0.355	0.90676
+				key =	0.35	0.90986
+				key =	0.345	0.91296
+				key =	0.34	0.91606
+				key =	0.335	0.91836
+				key =	0.33	0.92216
+				key =	0.325	0.92396
+				key =	0.32	0.92516
+				key =	0.315	0.92826
+				key =	0.31	0.93136
+				key =	0.305	0.93446
+				key =	0.3	0.93756
+				key =	0.295	0.93756
+				key =	0.29	0.94066
+				key =	0.285	0.94376
+				key =	0.28	0.94686
+				key =	0.275	0.94706
+				key =	0.27	0.94986
+				key =	0.265	0.95296
+				key =	0.26	0.95576
+				key =	0.255	0.95606
+				key =	0.25	0.95916
+				key =	0.245	0.96116
+				key =	0.24	0.96226
+				key =	0.235	0.96536
+				key =	0.23	0.96536
+				key =	0.225	0.96846
+				key =	0.22	0.96846
+				key =	0.215	0.97156
+				key =	0.21	0.97196
+				key =	0.205	0.97466
+				key =	0.2	0.97466
+				key =	0.195	0.97776
+				key =	0.19	0.97776
+				key =	0.185	0.98086
+				key =	0.18	0.98086
+				key =	0.175	0.98396
+				key =	0.17	0.98396
+				key =	0.165	0.98566
+				key =	0.16	0.98706
+				key =	0.155	0.98706
+				key =	0.15	0.99016
+				key =	0.145	0.99016
+				key =	0.14	0.99016
+				key =	0.135	0.99326
+				key =	0.13	0.99326
+				key =	0.125	0.99636
+				key =	0.12	0.99636
+				key =	0.115	0.99636
+				key =	0.11	0.99946
+				key =	0.105	0.99946
+				key =	0.1	0.99946
+				key =	0.095	1.00256
+				key =	0.09	1.00256
+				key =	0.085	1.00256
+				key =	0.08	1.00256
+				key =	0.075	1.00256
+				key =	0.07	0.99946
+				key =	0.065	0.99636
+				key =	0.06	0.99326
+				key =	0.055	0.98546
+				key =	0.05	0.97576
+				key =	0.045	0.96286
+				key =	0.04	0.94366
+				key =	0.035	0.91926
+				key =	0.03	0.88506
+				key =	0.025	0.83526
+				key =	0.02	0.76376
+				key =	0.015	0.66736
+				key =	0.01	0.53136
+				key =	0.009	0.49766
+				key =	0.008	0.46366
+				key =	0.007	0.42616
+				key =	0.006	0.38516
+				key =	0.005	0.34026
+				key =	0.004	0.29686
+				key =	0.003	0.24616
+				key =	0.002	0.19616
+				key =	0.001	0.13536
+				key =	0	0.01156
+			}
+
+			//12 flights according to [3]
+			//12 engines, 0 failures
+			TESTFLIGHT:NEEDS[TestLite|TestFlight]
+			{
+				ratedBurnTime = 25
+				ignitionReliabilityStart = 0.942308
+				ignitionReliabilityEnd = 0.988462
+				cycleReliabilityStart = 0.942308
+				cycleReliabilityEnd = 0.988462
+				isSolid = True
+			}
+		}
+	}
+}
diff --git a/GameData/RealismOverhaul/Engine_Configs/Star13E_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/Star13E_Config.cfg
index 6357bd1512..89507d17a8 100644
--- a/GameData/RealismOverhaul/Engine_Configs/Star13E_Config.cfg
+++ b/GameData/RealismOverhaul/Engine_Configs/Star13E_Config.cfg
@@ -330,6 +330,7 @@
 				cycleReliabilityStart = 0.985849
 				cycleReliabilityEnd = 0.997170
 				isSolid = True
+				techTransfer = Star-13D:50
 			}
 		}
 	}
diff --git a/GameData/RealismOverhaul/Engine_Configs/Star13_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/Star13_Config.cfg
index ddd8cd3aea..e817b8f47d 100644
--- a/GameData/RealismOverhaul/Engine_Configs/Star13_Config.cfg
+++ b/GameData/RealismOverhaul/Engine_Configs/Star13_Config.cfg
@@ -321,7 +321,7 @@
 				cycleReliabilityStart = 0.985849
 				cycleReliabilityEnd = 0.997170
 				isSolid = True
-				techTransfer = Star-13E:50
+				techTransfer = Star-13E,Star-13D:50
 			}
 		}
 	}
diff --git a/GameData/RealismOverhaul/Engine_Configs/Star17A_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/Star17A_Config.cfg
index d2b436325f..546b7b2f54 100644
--- a/GameData/RealismOverhaul/Engine_Configs/Star17A_Config.cfg
+++ b/GameData/RealismOverhaul/Engine_Configs/Star17A_Config.cfg
@@ -23,6 +23,8 @@
 //	Sources:
 
 //	https://forum.nasaspaceflight.com/index.php?action=dlattach;topic=31042.0;attach=494063;sess=0
+//	https://www.b14643.de/Spacerockets/Specials/ATK-Thiokol_STAR/index.htm
+//	https://ntrs.nasa.gov/api/citations/19720026092/downloads/19720026092.pdf
 
 //	Used by:
 
diff --git a/GameData/RealismOverhaul/Engine_Configs/Star17_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/Star17_Config.cfg
index 2d2cde3a3a..ef0e282202 100644
--- a/GameData/RealismOverhaul/Engine_Configs/Star17_Config.cfg
+++ b/GameData/RealismOverhaul/Engine_Configs/Star17_Config.cfg
@@ -25,6 +25,7 @@
 //	https://forum.nasaspaceflight.com/index.php?action=dlattach;topic=31042.0;attach=494063;sess=0
 //		Orbital ATK - Space Propulsion Products Catalog, September 2012: https://www.orbitalatk.com/flight-systems/propulsion-systems/launch-abort-motor/docs/orbital_atk_motor_catalog_(2012).pdf
 //		Alternate Wars - Thiokol/Morton Thiokol/ATK Space Engines:		 http://www.alternatewars.com/BBOW/Space_Engines/Thiokol_ATK_Engines.htm
+//	https://ntrs.nasa.gov/api/citations/19720026092/downloads/19720026092.pdf
 
 //	Used by:
 
diff --git a/GameData/RealismOverhaul/Engine_Configs/Star20_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/Star20A_Config.cfg
similarity index 84%
rename from GameData/RealismOverhaul/Engine_Configs/Star20_Config.cfg
rename to GameData/RealismOverhaul/Engine_Configs/Star20A_Config.cfg
index ed5b7adc0d..1243729f3d 100644
--- a/GameData/RealismOverhaul/Engine_Configs/Star20_Config.cfg
+++ b/GameData/RealismOverhaul/Engine_Configs/Star20A_Config.cfg
@@ -1,19 +1,19 @@
 //	==================================================
-//	Star 20
+//	Star 20A
 //
 //	Manufacturer: United Aircraft
 //
 //	=================================================================================
-//	Star 20
-//	
+//	Star 20A
+//	TE-M-640-1
 //
-//	Dry Mass: 26.58 Kg
+//	Dry Mass: 26.58 kg	burnout mass [1]
 //	Thrust (SL): ??? kN
-//	Thrust (Vac): 28.9 kN
-//	ISP: ??? SL / 286.5 Vac
+//	Thrust (Vac): 29.89 kN (24.47 kN average) [1]
+//	ISP: ??? SL / 286.5 Vac		effective Isp
 //	Burn Time: 31.5
 //	Chamber Pressure: 5.56 MPa
-//	Propellant: PBAN
+//	Propellant: CTPB
 //	Prop Ratio: N/A
 //	Throttle: N/A
 //	Nozzle Ratio: 50.2
@@ -22,23 +22,21 @@
 
 //	Sources:
 
-//	https://forum.nasaspaceflight.com/index.php?action=dlattach;topic=31042.0;attach=494063;sess=0
+//	[1] https://forum.nasaspaceflight.com/index.php?action=dlattach;topic=31042.0;attach=494063;sess=0
 
 //	Used by:
 
 //	Notes:
 
-//	propellant load 272.88 kg
-//	STAR 20 is just another name for Altair III. Why does this config exist?
-//	Should probably delete this and update the Altair III config
+//	expended weight 273.83 kg
 //	==================================================
 @PART[*]:HAS[#engineType[Star-20]]:FOR[RealismOverhaulEngines]
 {
-	%title = #roStar-20Title	//STAR 20
-	%manufacturer = #roMfrUA
-	%description = #roStar-20Desc	//The lightweight external nozzle is a composite of graphite, plastic, and steel. The consumable pyrogen igniter is actuated by two 6-second-delay electrical initiators or two SBASI zero-time-delay initiators.
+	%title = #roStar-20Title	//STAR 20A (Altair IIIA)
+	%manufacturer = #roMfrThiokol
+	%description = #roStar-20Desc
 
-	@tags ^= :$: USA united aircraft united technologies star 20 altair iii 3 fw-4s te-m-640-1 solid srm upper ctpb
+	@tags ^= :$: USA thiokol star 20a altair iiia 3a te-m-640-1 solid srm upper ctpb
 
 	%specLevel = operational
 
@@ -60,14 +58,14 @@
 	MODULE
 	{
 		name = ModuleFuelTanks
-		volume = 153.9959932
-		type = PBAN
+		volume = 154.71
+		type = CTPB
 		basemass = -1
 		TANK
 		{
-			name = PBAN
-			amount = 153.9959932
-			maxAmount = 153.9959932
+			name = CTPB
+			amount = 154.71
+			maxAmount = 154.71
 		}
 	}
 
@@ -75,19 +73,20 @@
 	{
 		name = ModuleEngineConfigs
 		type = ModuleEngines
-		configuration = Star-20
+		configuration = Star-20A
 		modded = false
 		origMass = 0.02658
 		CONFIG
 		{
-			name = Star-20
+			name = Star-20A
+			description = A.K.A. Altair IIIA, TE-M-640-1
 			specLevel = operational
-			minThrust = 28.9
-			maxThrust = 28.9
+			minThrust = 29.89
+			maxThrust = 29.89
 			heatProduction = 100
 			PROPELLANT
 			{
-				name = PBAN
+				name = CTPB
 				ratio = 1.0
 				DrawGauge = True
 			}
@@ -96,7 +95,7 @@
 				key = 0 286.5
 				key = 1 150
 			}
-			curveResource = PBAN
+			curveResource = CTPB
 			thrustCurve
 			{
 				key =	1	0.29
@@ -310,8 +309,7 @@
 				key =	0	0.006
 			}
 
-			// 74 flown, with 2 failures
-			// Just another name of Altair III? Why does this exist
+			// Same as Altair III/FW-4S?
 			TESTFLIGHT:NEEDS[TestLite|TestFlight]
 			{
 				ratedBurnTime = 31
@@ -319,7 +317,7 @@
 				ignitionReliabilityEnd = 0.995333
 				cycleReliabilityStart = 0.970045
 				cycleReliabilityEnd = 0.995270
-				techTransfer = Altair,Altair-II:50
+				techTransfer = Altair-III,Altair-II,Altair:50
 				reliabilityDataRateMultiplier = 2
 				isSolid = True
 			}
diff --git a/GameData/RealismOverhaul/Engine_Configs/Star27_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/Star27_Config.cfg
index 5b7fb4fea8..7d0be254b6 100644
--- a/GameData/RealismOverhaul/Engine_Configs/Star27_Config.cfg
+++ b/GameData/RealismOverhaul/Engine_Configs/Star27_Config.cfg
@@ -38,6 +38,8 @@
 //	Sources:
 
 //	https://forum.nasaspaceflight.com/index.php?action=dlattach;topic=31042.0;attach=494063;sess=0
+//	https://www.b14643.de/Spacerockets/Specials/ATK-Thiokol_STAR/index.htm
+//	https://ntrs.nasa.gov/api/citations/19720026092/downloads/19720026092.pdf
 
 //	Used by:
 
diff --git a/GameData/RealismOverhaul/Engine_Configs/Star37_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/Star37_Config.cfg
index fe115e84f2..243968ca48 100644
--- a/GameData/RealismOverhaul/Engine_Configs/Star37_Config.cfg
+++ b/GameData/RealismOverhaul/Engine_Configs/Star37_Config.cfg
@@ -48,7 +48,7 @@
 	%manufacturer = #roMfrThiokol
 	%description = #roSTAR-37Desc	//The STAR 37 is a vacuum solid rocket motor originally developed as a braking stage for the Surveyor lunar lander program. Later variants were used exclusively as apogee kick stages.
 
-	@tags ^= :$: USA thiokol star 37 solid srm upper pban
+	@tags ^= :$: USA thiokol star 37 te-m-364 solid srm upper pban
 
 	%specLevel = operational
 
@@ -94,6 +94,7 @@
 		CONFIG
 		{
 			name = STAR-37
+			description = TE-M-364
 			specLevel = operational
 			minThrust = 43.5
 			maxThrust = 43.5
diff --git a/GameData/RealismOverhaul/Localization/en-us-Engines.cfg b/GameData/RealismOverhaul/Localization/en-us-Engines.cfg
index 58a75bc59d..6617f36be3 100644
--- a/GameData/RealismOverhaul/Localization/en-us-Engines.cfg
+++ b/GameData/RealismOverhaul/Localization/en-us-Engines.cfg
@@ -198,6 +198,9 @@ Localization
 		//		F1B
 		#roF1BTitle = F-1B
 		#roF1BDesc = The F-1B engine was designed to power the proposed Pyrios advanced boosters for the Space Launch System. A highly modified version of the original F-1, the F-1B uses modern manufacturing techniques including 3-D printing and features a simpler gas generator exhaust arrangement in order to reduce manufacturing costs and increase thrust at a slight cost of efficiency.
+		//		FW5
+		#roFW5Title = FW-5
+		#roFW5Desc = Developed from Altair-III (FW-4S), the FW-5 was a small apogee kick motor used for most Hughes HS-333 satellite busses, including Anik, Westar and Marisat.
 		//G
 		//		G1
 		#roG1Title = G-1
@@ -778,6 +781,9 @@ Localization
 		//		SR19
 		#roSR19Title = SR19
 		#roSR19Desc = The SR19 is an improved Minuteman second stage developed for the LGM-30F Minuteman II.
+		//		SR28
+		#roSR28Title = SR28
+		#roSR28Desc = A mid-sized apogee kick motor used on ATS-1/2/3.
 		//		SR73
 		#roSR73Title = SR73
 		#roSR73Desc = The SR73 is an improved Minuteman third stage developed for the LGM-30F Minuteman II.
@@ -817,6 +823,12 @@ Localization
 		//		Star-9
 		#roStar-9Title = STAR 9
 		#roStar-9Desc = The STAR 9 rocket motor was developed in 1993 on independent research and development funds to demonstrate a number of low-cost motor technologies. These included an integral aft polar boss/exit cone, two-dimensional carbon-carbon throat, and case-on-propellant manufacturing technique.
+		//		Star-12
+		#roStar-12Title = STAR 12
+		#roStar-12Desc = The Star 12 was developed as a compact retro motor for the Satellite Return Vehicle, used to recover film from Keyhole spy satellites.
+		//		Star-12A
+		#roStar-12Title = STAR 12A
+		#roStar-12Desc = The Star 12A is a stretched Star 12 with improved propellant, for later, heavier satellites in the Keyhole series.
 		//		Star-13
 		#roStar-13Title = STAR 13
 		#roStar-13Desc = The Star 13 was developed in the mid-1960s as the braking motor for the AIMP program, and was used on Explorer 33 and 35.
@@ -826,6 +838,9 @@ Localization
 		//		Star-13B
 		#roStar-13BTitle = STAR 13B
 		#roStar-13BDesc = This orbit insertion motor incorporated the lightweight case developed for the STAR 13 with the propellant and nozzle design of the earlier TE-M-516 apogee motor. The motor case was stretched 2.2 inches to provide for increased propellant loading. This motor was used to adjust the inclination of a satellite from a Delta launch.
+		//		Star-13D
+		#roStar-13DTitle = STAR 13D
+		#roStar-13DDesc = A small apogee kick motor used for geosynchronous satellites. It was used on the first geosynchronous satellite, Syncom 1.
 		//		Star-15G
 		#roStar-15GTitle = STAR 15G
 		#roStar-15GDesc = A single STAR 15G motor, used in a variety of applications. This has a straight nozzle.
@@ -836,7 +851,7 @@ Localization
 		#roStar-17ATitle = STAR 17A
 		#roStar-17ADesc = Apogee kick motor. Modifications: 175 mm straight section added to the Star 17. The 17A has been used for circularized orbits for the Skynet 1, NATO 1, and IMP-H & J satellites. This motor provides the high case safety factor required for this program. The TE-M-521-7 model used for several Air Force missions provides a typical safety factor with a 1.3 pound weight savings.
 		//		Star-20
-		#roStar-20Title = STAR 20
+		#roStar-20Title = STAR 20A (Altair IIIA)
 		#roStar-20Desc = The lightweight external nozzle is a composite of graphite, plastic, and steel. The consumable pyrogen igniter is actuated by two 6-second-delay electrical initiators or two SBASI zero-time-delay initiators.
 		//		Star-24C
 		#roStar-24CTitle = STAR 24C
@@ -883,6 +898,18 @@ Localization
 		//		SuperDraco
 		#roSuperDracoTitle = SuperDraco
 		#roSuperDracoDesc = A powerful hypergolic engine used in the launch abort system of the Dragon 2 capsule. Other potential applications include hypersonic deceleration and landing for crew and cargo modules.
+		//		SVM1
+		#roSVM1Title = SVM-1
+		#roSVM1Desc = A small apogee kick motor used for the Intelsat II series of geostationary satellites.
+		//		SVM2
+		#roSVM2Title = SVM-2
+		#roSVM2Desc = A small apogee kick motor used for the Intelsat III series of geostationary satellites.
+		//		SVM4A
+		#roSVM4ATitle = SVM-4A
+		#roSVM4ADesc = A medium apogee kick motor used for the Intelsat IV and IVA series of geostationary satellites, as well as some early Comstar satellites.
+		//		SVM5
+		#roSVM5Title = SVM-5
+		#roSVM5Desc = A small apogee kick motor used for early SMS and GOES geostationary weather satellites.
 		//		SX3
 		#roSX3Title = SX3 MPD Thruster
 		#roSX3Desc = A 100 kW Applied-Field MPD thruster in development at the University of Stuttgart Institute of Space Systems. It set a thruster efficiency record of 61.99% in 2019.