This part is from KSP Interstellar Extended
cost:
15000
mass:
1
category:
Engine
TechRequired:
plasmaPropulsion
engine_data:
VASIMR
{"isp"=>{"vac"=>29560.0, "atmo"=>0.0}, "propellant_ratios"=>{"LqdHydrogen"=>1.0}, "max_thrust"=>80.5}
resources:
WasteHeat
100000.0