This part is from Ludicrous Propulsion Systems
cost:
7250
mass:
4.75
category:
Propulsion
TechRequired:
veryHeavyRocketry
engine_data:
BBSRB
{"isp"=>{"vac"=>275.0, "atmo"=>205.0}, "propellant_ratios"=>{"SolidFuel"=>0.8, "Oxidizer"=>1.2}, "max_thrust"=>730.0}
resources:
SolidFuel
1040.0
Oxidizer
1560.0