This part is from BlueTieSpaceScience
cost:
1200
mass:
1.5
category:
Engine
TechRequired:
basicRocketry
engine_data:
standard
{"isp"=>{"vac"=>320000.0, "atmo"=>250000.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>500.0}