This part is from ExplorationExpansion
cost:
9000
mass:
4.75
category:
Engine
TechRequired:
nuclearPropulsion
engine_data:
standard
{"isp"=>{"vac"=>25.0, "atmo"=>380.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9}, "max_thrust"=>340.0}