This part is from RFA
cost:
900
mass:
0.75
category:
Engine
TechRequired:
propulsionSystems
engine_data:
standard
{"isp"=>{"vac"=>350.0, "atmo"=>185.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>85.0}