This part is from Rational Resources
cost:
10400
mass:
0.25
category:
Engine
TechRequired:
ionPropulsion
engine_data:
Ion
{"isp"=>{"vac"=>750.0, "atmo"=>150.0}, "propellant_ratios"=>{"ElectricCharge"=>3.2, "Water"=>1.0}, "max_thrust"=>20.0}