This part is from Soviet Rockets - R7/Proton/Zenit Rockets and more
cost:
400
mass:
1.75
category:
Propulsion
TechRequired:
start
engine_data:
KSX
{"isp"=>{"vac"=>350.0, "atmo"=>90.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>250.0}
