From 5a17b91fcbf1ac0465b118f51ccc34967d9d9f8a Mon Sep 17 00:00:00 2001
From: ryanc55 <54254625+ryanc55@users.noreply.github.com>
Date: Sun, 13 Aug 2023 09:28:59 -0700
Subject: [PATCH] Pioneer Vernier Solid Motor

Engine config for Pioneer vernier adjustment motor.
---
 .../Engine_Configs/PioneerVernier_Config.cfg  | 121 ++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 GameData/RealismOverhaul/Engine_Configs/PioneerVernier_Config.cfg

diff --git a/GameData/RealismOverhaul/Engine_Configs/PioneerVernier_Config.cfg b/GameData/RealismOverhaul/Engine_Configs/PioneerVernier_Config.cfg
new file mode 100644
index 0000000000..1832024541
--- /dev/null
+++ b/GameData/RealismOverhaul/Engine_Configs/PioneerVernier_Config.cfg
@@ -0,0 +1,121 @@
+//  Vernier motor from Pioneer 0/1
+//  ===============================================================
+//  
+//  Length: 4.25 in
+//  Diameter: .75 in
+//  Mass: 1.5 lb  // Approximated from known weights:  (43.7 total propulsion - 24lb TX-8 - 7lb vernier adapter) / 8
+//  Dry Mass: 1 lb // - Approximate weight of 120ml solid fuel.  Volume from cylinder size.
+//  Thrust: 13 lb  // Total impulse based on propellant load and relealized delta-v on Pioneer 1 mission
+//  Burn Time: 16s //
+//  ISP: 235
+//
+//  1958 NASA/USAF Space Probes (ABLE-1): https://ntrs.nasa.gov/citations/19990008156
+// 
+//	=================================================
+
+@PART[*]:HAS[#engineType[PioneerVernier]]:FOR[RealismOverhaulEngines]
+{
+	%title = Pioneer Adjustment Motor	
+	%manufacturer = STL
+	%description = Tiny solid rocket motor developed for final velocity adjustment of the early Pioneer probes.
+	
+	@tags ^= :$: USA jpl stl solid booster PSPC
+
+	%specLevel = operational
+
+	@MODULE[ModuleEngines*]
+	{
+		%EngineType = SolidBooster
+		%allowShutdown = False
+		%throttleLocked = True
+		%autoVariationScale = 3
+	}
+	
+	!MODULE[ModuleGimbal] {}
+	!MODULE[ModuleFuelTanks],* {}
+	!MODULE[ModuleAlternator],*{}
+	!RESOURCE,*{}
+	
+	MODULE
+	{
+		name = ModuleFuelTanks
+		volume = .12  
+		type = PSPC
+		basemass = -1
+		TANK
+		{
+			name = PSPC
+			amount = .12
+			maxAmount = .12
+		}
+	}
+	
+	MODULE
+	{
+		name = ModuleEngineConfigs
+		type = ModuleEngines
+		configuration = Pioneer-JPL-532A
+		origMass = .00045
+	
+		CONFIG
+		{
+			name = Pioneer-JPL-532A
+			description = JPL-532A
+			specLevel = operational
+			minThrust = 0.06
+			maxThrust = 0.06
+			heatProduction = 10
+			massMult = 1.0
+			
+			ullage = False
+			pressureFed = False
+			ignitions = 1
+			
+			
+			PROPELLANT
+			{
+				name = PSPC
+				ratio = 1.0
+				DrawGauge = True
+			}
+			
+			atmosphereCurve
+			{
+				key = 0 235	
+				key = 1 214	 
+			}
+			
+			curveResource = PSPC
+			
+			chamberNominalTemp	= 1500
+			maxEngineTemp = 2040
+			
+			thrustCurve
+			{
+				key = 1.00 0.90
+				key = 0.99 0.95
+				key = 0.96 1.0
+				key = 0.92 0.999
+				key = 0.89 0.998
+				key = 0.63 0.960
+				key = 0.37 0.810
+				key = 0.10 0.314
+				key = 0.00 0.03
+			}
+
+			TESTFLIGHT
+			{
+				ratedBurnTime = 18	//account for thrust tail-off
+				ignitionReliabilityStart = 0.98 
+				ignitionReliabilityEnd = 0.995 
+				// Because the fail chance is 10x during the first 5 seconds of burn, this needs to be 10x as reliable as you'd think.
+				cycleReliabilityStart = 0.98
+				cycleReliabilityEnd = 0.9985
+				reliabilityDataRateMultiplier = 1.5
+				isSolid = True
+			}
+		}
+	}
+
+}
+