This part is from US Rockets
cost:
400
mass:
0.01
category:
Engine
TechRequired:
start
engine_data:
standard
{"isp"=>{"vac"=>290.0, "atmo"=>250.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>10.0}