This part is from Space Bus
cost:
3850
mass:
0.1
category:
Engine
TechRequired:
hypersonicFlight
engine_data:
standard
{"isp"=>{"vac"=>1000.0, "atmo"=>1500.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>250.0}