This part is from eisenhower-astronautics
cost:
400
mass:
.64
TechRequired:
generalRocketry
engine_data:
Engine
{"isp"=>{"vac"=>359.0, "atmo"=>112.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>148.0}