| 1 | A | B | C | D | E | F |
| --- | --- | --- | --- | --- | --- | --- |
| 2 | Jet engine - Consumption of fuel or propellant |  |  |  |  |  |
| 3 | Engine type | Scenario | Spec. fuel cons. | Spec. fuel cons. | Specific impulse (s) | Effective exhaust velocity (m/s) |
| 4 | Engine type | Scenario | (lb/lbf·h) | (g/kN·s) | Specific impulse (s) | Effective exhaust velocity (m/s) |
| 5 | NK-33 rocket engine | Vacuum | 10.9 | 308 | 331 | 3250 |
| 6 | SSME rocket engine | Space shuttle vacuum | 7.95 | 225 | 453 | 4440 |
| 7 | Ramjet | Mach 1 | 4.5 | 130 | 800 | 7800 |
| 8 | J-58 turbojet | SR-71 at Mach 3.2 (Wet) | 1.9 | 54 | 1900 | 19000 |
| 9 | Eurojet EJ200 | Reheat | 1.66–1.73 | 47–49 | 2080–2170 | 20400–21300 |
| 10 | Rolls-Royce/Snecma Olympus 593 turbojet | Concorde Mach 2 cruise (Dry) | 1.195 | 33.8 | 3010 | 29500 |
| 11 | Eurojet EJ200 | Dry | 0.74–0.81 | 21–23 | 4400–4900 | 44000–48000 |
| 12 | CF6-80C2B1F turbofan | Boeing 747-400 cruise | 0.605 | 17.1 | 5950 | 58400 |
| 13 | General Electric CF6 turbofan | Sea level | 0.307 | 8.7 | 11700 | 115000 |

Question: What turbo fan uses less fuel than the Concorde's Rolls-Royce/Snecma Olympus 593 turbojet?
Answer: General Electric's CF6 turbofan, uses a lot less fuel than the, Concorde's Rolls-Royce/Snecma Olympus 593 turbojet.