SSME

This part is from Squad

cost:
18000
mass:
4.0
category:
Engine
TechRequired:
veryHeavyRocketry
engine_data:
KS25
{"isp"=>{"vac"=>315.0, "atmo"=>295.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>1000.0}

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