This part is from History of Spaceflight RSS
cost:
250
mass:
1.492
category:
Engine
TechRequired:
orbitalRocketry1960
engine_data:
PrimaryMode
{"isp"=>{"vac"=>317.0, "atmo"=>275.0}, "propellant_ratios"=>{"Kerosene"=>1.0, "LqdOxygen"=>2.39}, "max_thrust"=>1628.0}