This part is from KODS
cost:
4000
mass:
4
category:
Propulsion
TechRequired:
precisionPropulsion
engine_data:
Rutherford
{"isp"=>{"vac"=>315.0, "atmo"=>300.0}, "propellant_ratios"=>{"LqdMethane"=>3.0, "Oxidizer"=>1.0}, "max_thrust"=>1036.6}