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) |
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 Four 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 |