This part is from BetterIonDrives
cost:
20000
mass:
0.25
category:
Engine
TechRequired:
ionPropulsion
engine_data:
standard
{"isp"=>{"vac"=>4200.0, "atmo"=>100.0}, "propellant_ratios"=>{"ElectricCharge"=>18.0, "XenonGas"=>1.0}, "max_thrust"=>20.0}