This part is from History of Spaceflight RSS
cost:
50
mass:
0.011
category:
Engine
TechRequired:
solids1976
engine_data:
PrimaryMode
{"isp"=>{"vac"=>270.0, "atmo"=>270.0}, "propellant_ratios"=>{"HTPB"=>0.5649717514124294}, "max_thrust"=>7.25}
