Compare rockets
Pick up to 4 vehicles to compare specs and flight records side by side. Browse all →
| Specification | Firefly Alpha Firefly Aerospace × remove | Tsiklon-2 Yuzhnoye Design Bureau × remove | Voskhod Soviet Space Program × remove | Vostok 8A92M RKK Energiya × remove |
|---|---|---|---|---|
| Flights | 7 | 105 | 299 | 93 |
| Success rate | 57.1% | 98.1% | 95.7% | 98.9% |
| Thrust | 736 kN | 2,366 kN | — | 3,996 kN |
| Height | 29.6 m | 39.7 m | — | 30.84 m |
| Diameter | 1.82 m | 3 m | — | 2.99 m |
| Launch mass | 54 t | 182 t | — | 282 t |
| LEO capacity | 1,000 kg | 2,820 kg | — | 3,800 kg |
| GTO capacity | — | — | — | — |
| Launch cost | $15M | $12M | — | — |
| Reusable | No | No | No | No |
| Stages | 2 | 3 | — | 2 |