This part is from History of Spaceflight RSS
cost:
50
mass:
0.246
category:
Engine
TechRequired:
solids1967
engine_data:
PrimaryMode
{"isp"=>{"vac"=>254.0, "atmo"=>252.0}, "propellant_ratios"=>{"HTPB"=>0.5649717514124294}, "max_thrust"=>181.0}
