This part is from Soviet Space Program Career Conversion
cost:
900
mass:
0.22
TechRequired:
supersonicFlight
engine_data:
ClosedCycle
{"isp"=>{"vac"=>390.0, "atmo"=>350.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>60.0}