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