This part is from M.O.T.H.S.
cost:
1200
mass:
0.6
category:
Engine
TechRequired:
advRocketry
engine_data:
standard
{"isp"=>{"vac"=>320.0, "atmo"=>285.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>120.0}