This part is from galen
cost:
2000
mass:
0.825
category:
Propulsion
TechRequired:
aviation
engine_data:
standard
{"isp"=>{"vac"=>225.0, "atmo"=>250.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>85.0}