This part is from CONTARES

cost:
1000
mass:
0.5
TechRequired:
advRocketry
engine_data:
ClosedCycle
{"isp"=>{"vac"=>240.0, "atmo"=>200.0}, "propellant_ratios"=>{"Kerosene"=>0.9, "LqdOxygen"=>1.1}, "max_thrust"=>20.0}
resources:
LiquidFuel
54.0
Oxidizer
66.0
K
S
P