Add RD-220, and alternate fuel mixes to RD253 and RD270 (#2856)

* Add RD-220, and alternate fuel mixes to RD253 and RD270 Add the RD220 and RD221, predecessors to the RD253 and RD254. Add alternative RD253 configurations tested but never used for Proton, including AK27/UDMH and LOX/UDMH. Finally, consolidate the RD270 and RD270M into one config. This also includes many improvements to the RD270 config, correcting O/F ratios, and creating PB-1 for use in the RD-270M. * Add note regarding RD270 scale * Deprecate RD-270M Deprecate RD-270M engine type, as it is being moved to a RD-270 config (and almost certainly didn't exist anyway) * Update propellant ratios Update propellant ratios for RO v16 * Remove gimbal, add throttle Remove gimbal and add throttle instead for differential throttle on RD-220/221. * Remove mention of pentaborane Remove mention of pentaborane from RD-270 description, seeing as it was never actually proposed to use pentaborane * LqdOxygen, not LOX oops * Fix typo and add PB to stock tanks * Add PB to RO tanks too * Add dash, split RD-270M Use PB-1. Make RD-270M it's own config, not a subconfig, considering it has a much different MR and would probably need significant redesign. * Update RD270_Config.cfg
KSP-RO · Jun 9, 2023 · fc67603 · fc67603
1 parent 6dbbd89
commit fc67603
Show file tree

Hide file tree

Showing 9 changed files with 1,295 additions and 43 deletions.
diff --git a/GameData/RealismOverhaul/Engine_Configs/RD220_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/RD220_Config.cfg
@@ -0,0 +1,166 @@
+//	==================================================
+//	RD-220/112
+//
+//	Manufacturer: NPO Energomash
+//
+//	=================================================================================
+//	RD-112
+//	R-20 1st stage
+//
+//	Dry Mass: 790 Kg
+//	Thrust (SL): 961 kN
+//	Thrust (Vac): 1088.5 kN
+//	ISP: 304 SL / 344 Vac
+//	Burn Time: ???
+//	Chamber Pressure: 14.7 MPa	[2]
+//	Propellant: LOX / UDMH
+//	Prop Ratio: 1.704	[2],[5]
+//	Throttle: 100%-75% for differential throttle?
+//	Nozzle Ratio: 31.8	[2],[5]
+//	Ignitions: ???
+//	=================================================================================
+//	RD-220
+//	Hypergolic version of RD-112?
+//
+//	Dry Mass: 760 Kg
+//	Thrust (SL): 947.3 kN
+//	Thrust (Vac): 1074.0 kN
+//	ISP: 270 SL / 306 Vac
+//	Burn Time: ???
+//	Chamber Pressure: 14.7 MPa	[6]
+//	Propellant: AK27 / UDMH
+//	Prop Ratio: 2.8	[6]
+//	Throttle: 100%-75% for differential throttle?
+//	Nozzle Ratio: 31.8	[6]
+//	Ignitions: ???
+//	=================================================================================
+
+//	Sources:
+
+//	[1]http://www.npoenergomash.ru/netcat_files/File/Table_of_Engines.docx
+//	[2]http://www.b14643.de/Spacerockets/Specials/Russian_Rocket_engines/engines.htm
+//	[3]http://www.b14643.de/Spacerockets/Specials/R_and_UR-Missiles/Description/Frame.htm
+//	[4]http://www.lpre.de/energomash/RD-114/index.htm
+//	[5]http://www.astronautix.com/r/rd-112.html
+//	[6]http://www.astronautix.com/r/rd-220.html
+//	[7]http://epizodyspace.ru/bibl/glushko/izbran-rab-glushko/1/02.html
+
+
+//	Used by:
+
+//	Notes:
+//	All data from [1] unless otherwise stated.
+//	Astronautix claims RD-107/108 derived. Drawings from b14643 show single chamber?
+//	Data on RD-220/221 fuzzy, but dimensions are exactly the same as RD-112/113, and other stats very close
+//	Pretty confident they were part of the same project.
+//	Almost certainly staged combustion, based on performance.
+//	R-20 is huge, 28 engines first stage, 7 engines second stage.
+//	According to [7], fixed engines. Assuming control achieved through differential throttle?
+//	Seems reasonable, considering number of engines on R-20
+//	==================================================
+@PART[*]:HAS[#engineType[RD220]]:FOR[RealismOverhaulEngines]
+{
+	%title = #roRD220Title	//RD-220/112
+	%manufacturer = #roMfrOKB456
+	%description = #roRD220Desc
+
+	@tags ^= :$: USSR okb-456 glushko rd-112 rd-113 rd-220 rd-221 liquid pump booster upper udmh nitric acid oxygen
+
+	%specLevel = concept
+
+	@MODULE[ModuleEngines*]
+	{
+		%EngineType = LiquidFuel
+	}
+
+	!MODULE[ModuleEngineConfigs],*{}
+	!MODULE[ModuleAlternator],*{}
+	!RESOURCE,*{}
+
+	!MODULE[ModuleGimbal] {}	//fixed?
+
+	MODULE
+	{
+		name = ModuleEngineConfigs
+		type = ModuleEngines
+		configuration = RD-220
+		origMass = 0.760
+		modded = false
+
+		CONFIG
+		{
+			name = RD-220
+			description = First stage for R-20 project.
+			specLevel = concept
+			minThrust = 805.5
+			maxThrust = 1074.0
+			heatProduction = 100
+			massMult = 1.0
+			PROPELLANT
+			{
+				name = UDMH
+				ratio = 0.4090
+				DrawGauge = True
+			}
+			PROPELLANT
+			{
+				name = AK27
+				ratio = 0.5910
+			}
+			atmosphereCurve
+			{
+				key = 0 306
+				key = 1 270
+			}
+
+			ullage = True
+			pressureFed = False
+			ignitions = 1
+
+			IGNITOR_RESOURCE
+			{
+				name = ElectricCharge
+				amount = 1.0
+			}
+			SUBCONFIG
+			{
+				name = RD-112
+				description = UDMH/LOX version.
+				specLevel = concept
+				minThrust = 816.4
+				maxThrust = 1088.5
+				massMult = 1.0395
+				costOffset = 0
+				PROPELLANT
+				{
+					name = UDMH
+					ratio = 0.4584
+					DrawGauge = True
+				}
+				PROPELLANT
+				{
+					name = LqdOxygen
+					ratio = 0.5416
+				}
+				atmosphereCurve
+				{
+					key = 0 344
+					key = 1 304
+				}
+			}
+
+			TESTFLIGHT:NEEDS[TestLite|TestFlight]
+			{
+				testedBurnTime = 450		//same as Proton Uppers
+				ratedBurnTime = 110			//same as RD-111?
+				safeOverburn = true
+				ignitionReliabilityStart = 0.987116
+				ignitionReliabilityEnd = 0.997966
+				cycleReliabilityStart = 0.987116
+				cycleReliabilityEnd = 0.997966
+				techTransfer = RD-221:50
+			}
+		}
+	}
+}
+
diff --git a/GameData/RealismOverhaul/Engine_Configs/RD221_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/RD221_Config.cfg
@@ -0,0 +1,166 @@
+//	==================================================
+//	RD-221/113
+//
+//	Manufacturer: NPO Energomash
+//
+//	=================================================================================
+//	RD-113
+//	R-20 2nd stage
+//
+//	Dry Mass: 1100 Kg
+//	Thrust (SL): ??? kN
+//	Thrust (Vac): 1137.6 kN
+//	ISP: 251 SL / 360 Vac	//SL calculated with RPA
+//	Burn Time: ???
+//	Chamber Pressure: 14.7 MPa	[2]
+//	Propellant: LOX / UDMH
+//	Prop Ratio: 1.704	[2],[5]
+//	Throttle: 100%-75% for differential throttle?
+//	Nozzle Ratio: 119.8	[2],[5]
+//	Ignitions: ???
+//	=================================================================================
+//	RD-221
+//	Hypergolic version of RD-113
+//
+//	Dry Mass: 1070 Kg
+//	Thrust (SL): ??? kN
+//	Thrust (Vac): 1117.9 kN
+//	ISP: 221 SL / 318 Vac	//SL calculated with RPA
+//	Burn Time: ???
+//	Chamber Pressure: 14.7 MPa	[6]
+//	Propellant: AK27 / UDMH
+//	Prop Ratio: 2.8	[6]
+//	Throttle: 100%-75% for differential throttle?
+//	Nozzle Ratio: 119.8	[6]
+//	Ignitions: ???
+//	=================================================================================
+
+//	Sources:
+
+//	[1]http://www.npoenergomash.ru/netcat_files/File/Table_of_Engines.docx
+//	[2]http://www.b14643.de/Spacerockets/Specials/Russian_Rocket_engines/engines.htm
+//	[3]http://www.b14643.de/Spacerockets/Specials/R_and_UR-Missiles/Description/Frame.htm
+//	[4]http://www.lpre.de/energomash/RD-114/index.htm
+//	[5]http://www.astronautix.com/r/rd-112.html
+//	[6]http://www.astronautix.com/r/rd-220.html
+//	[7]http://epizodyspace.ru/bibl/glushko/izbran-rab-glushko/1/02.html
+
+
+//	Used by:
+
+//	Notes:
+//	All data from [1] unless otherwise stated.
+//	Astronautix claims RD-107/108 derived. Drawings from b14643 show single chamber?
+//	Data on RD-220/221 fuzzy, but dimensions are exactly the same as RD-112/113, and other stats very close
+//	Pretty confident they were part of the same project.
+//	Almost certainly staged combustion, based on performance.
+//	R-20 is huge, 28 engines first stage, 7 engines second stage.
+//	According to [7], fixed engines. Assuming control achieved through differential throttle?
+//	Seems reasonable, considering number of engines on R-20
+//	==================================================
+@PART[*]:HAS[#engineType[RD221]]:FOR[RealismOverhaulEngines]
+{
+	%title = #roRD221Title	//RD-221/113
+	%manufacturer = #roMfrOKB456
+	%description = #roRD221Desc
+
+	@tags ^= :$: USSR okb-456 glushko rd-112 rd-113 rd-220 rd-221 liquid pump booster upper udmh nitric acid oxygen
+
+	%specLevel = concept
+
+	@MODULE[ModuleEngines*]
+	{
+		%EngineType = LiquidFuel
+	}
+
+	!MODULE[ModuleEngineConfigs],*{}
+	!MODULE[ModuleAlternator],*{}
+	!RESOURCE,*{}
+
+	!MODULE[ModuleGimbal] {}	//fixed?
+
+	MODULE
+	{
+		name = ModuleEngineConfigs
+		type = ModuleEngines
+		configuration = RD-221
+		origMass = 0.760
+		modded = false
+
+		CONFIG
+		{
+			name = RD-221
+			description = Second stage for R-20 project.
+			specLevel = concept
+			minThrust = 838.4
+			maxThrust = 1117.9
+			heatProduction = 100
+			massMult = 1.4079
+			PROPELLANT
+			{
+				name = UDMH
+				ratio = 0.4090
+				DrawGauge = True
+			}
+			PROPELLANT
+			{
+				name = AK27
+				ratio = 0.5910
+			}
+			atmosphereCurve
+			{
+				key = 0 318
+				key = 1 221
+			}
+
+			ullage = True
+			pressureFed = False
+			ignitions = 1
+
+			IGNITOR_RESOURCE
+			{
+				name = ElectricCharge
+				amount = 1.0
+			}
+			SUBCONFIG
+			{
+				name = RD-113
+				description = UDMH/LOX version.
+				specLevel = concept
+				minThrust = 853.2
+				maxThrust = 1137.6
+				massMult = 1.4474
+				costOffset = 0
+				PROPELLANT
+				{
+					name = UDMH
+					ratio = 0.4584
+					DrawGauge = True
+				}
+				PROPELLANT
+				{
+					name = LqdOxygen
+					ratio = 0.5416
+				}
+				atmosphereCurve
+				{
+					key = 0 360
+					key = 1 251
+				}
+			}
+
+			TESTFLIGHT:NEEDS[TestLite|TestFlight]
+			{
+				testedBurnTime = 450		//same as Proton Uppers
+				ratedBurnTime = 250		//same as Proton Uppers?
+				safeOverburn = true
+				ignitionReliabilityStart = 0.989850
+				ignitionReliabilityEnd = 0.998397
+				cycleReliabilityStart = 0.989850
+				cycleReliabilityEnd = 0.998397
+				techTransfer = RD-220:50
+			}
+		}
+	}
+}
+