This part is from Spice Launch System
cost:
525
mass:
4
TechRequired:
start
engine_data:
standard
{"isp"=>{"vac"=>980.0, "atmo"=>1000.0}, "propellant_ratios"=>{"SolidFuel"=>1.0}, "max_thrust"=>250.0}
resources:
SolidFuel
1.0