Long March 8 N1 (rocket) Proton (rocket family) Zenit (rocket family) Space Launch System Future applications of staged-combustion engines Starship's first stage and second stage powered by up to a combined 39 Raptor engines New Glenn first stage with 7 BE-4 engines Vulcan first stage with 2 BE-4 engines Long March 5DY Long March 9 See also Expander cycle Gas-generator cycle Combustion tap-off cycle Pressure-fed engine References External links Rocket power cycles Nasa's full flow stages combustion cycle demonstrator Design Tool for Liquid Rocket Engine Thermodynamic Analysis Rocket propulsion Rocket engines Spacecraft propulsion Combustion Thermodynamic cycles Russian inventions