Template:Specific impulse examples
| Engine | Effective exhaust velocity (m/s, kg·m/(s·kg)) |
Specific impulse (s) |
Energy per kg of exhaust (MJ/kg) |
|---|---|---|---|
| Turbofan jet engine (actual V is ~300 m/s) |
29,000 | 3,000 | ~0.05 |
| Solid rocket |
2,500 | 250 | 3 |
| Bipropellant liquid rocket |
4,400 | 450 | 9.7 |
| Ion thruster | 29,000 | 3,000 | 430 |
| Dual-stage 4-grid electrostatic ion thruster[1] | 210,000 | 21,400 | 22,500 |
| VASIMR[2][3][4] | 30,000–120,000 | 3,000–12,000 | 1,400 |