This part is from RealEngines
cost:
1200
mass:
1.5
category:
Engine
TechRequired:
basicRocketry
engine_data:
RS25
{"isp"=>{"vac"=>375.0, "atmo"=>260.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>645.0}
