This part is from Kinetic Penetrator by Vanguard Astrodynamics
cost:
550
mass:
0.06
category:
Engine
TechRequired:
precisionPropulsion
engine_data:
standard
{"isp"=>{"vac"=>270.0, "atmo"=>180.0}, "propellant_ratios"=>{"MonoPropellant"=>0.9}, "max_thrust"=>40.0}