Compare rockets
Pick up to 4 vehicles to compare specs and flight records side by side. Browse all →
| Specification | Soyuz-U2 Soviet Space Program × remove | Proton K/DM-2 Khrunichev State Research and Production Space Center × remove | Tsiklon-2 Yuzhnoye Design Bureau × remove |
|---|---|---|---|
| Flights | 71 | 110 | 105 |
| Success rate | 100% | 93.6% | 98.1% |
| Thrust | — | — | 2,366 kN |
| Height | 34.54 m | — | 39.7 m |
| Diameter | 2.95 m | — | 3 m |
| Launch mass | 298 t | — | 182 t |
| LEO capacity | 7,050 kg | — | 2,820 kg |
| GTO capacity | — | — | — |
| Launch cost | — | — | $12M |
| Reusable | No | No | No |
| Stages | 2 | — | 3 |