This part is from kfw
cost:
880
mass:
0.61
category:
Engine
TechRequired:
aviation
engine_data:
standard
{"isp"=>nil, "propellant_ratios"=>{"LiquidFuel"=>1.0, "IntakeAir"=>15.0}, "max_thrust"=>18.0}
resources:
IntakeAir
0.1