Jet engine
Consumption of fuel or propellant
Columns: Engine type | Scenario | SFC in lb/(lbf·h) | SFC in g/(kN·s) | Specific impulse (s) | Effective exhaust velocity (m/s)
NK-33 rocket engine | Vacuum | 10.9 | 309 | 331 | 3240 | SSME rocket engine | Space shuttle vacuum | 7.95 | 225 | 453 | 4423 | Ramjet | Mach 1 | 4.5 | 127 | 800 | 7877 | J-58 turbojet | SR-71 at Mach 3.2 (Wet) | 1.9 | 53.8 | 1900 | 18587 | Rolls-Royce/Snecma Olympus 593 | Concorde Mach 2 cruise (Dry) | 1.195 | 33.8 | 3012 | 29553 | CF6-80C2B1F turbofan | Boeing 747-400 cruise | 0.605 | 17.1 | 5950 | 58400 | General Electric CF6 turbofan | Sea level | 0.307 | 8.696 | 11700 | 115000