This part is from Rusty Star Rockets
cost:
6000
mass:
2.0
category:
Engine
TechRequired:
aerospaceTech
engine_data:
ClosedCycle
{"isp"=>{"vac"=>315.0, "atmo"=>285.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>180.0}
AirBreathing
{"isp"=>nil, "propellant_ratios"=>{"LiquidFuel"=>1.0, "IntakeAir"=>6.0}, "max_thrust"=>105.0}