This part is from Knes
cost:
2500
mass:
1.4
category:
Engine
TechRequired:
advRocketry
engine_data:
standard
{"isp"=>{"vac"=>320.0, "atmo"=>220.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>590.0}