This part is from Chrayol Design Org.
cost:
288
mass:
0.524
category:
Engine
TechRequired:
advRocketry
engine_data:
S1SRB
{"isp"=>{"vac"=>253.0, "atmo"=>229.0}, "propellant_ratios"=>{"SolidFuel"=>1.0}, "max_thrust"=>158.0}
resources:
SolidFuel
304.0