Soyuz-5 (RKK Energiya)
The Soyuz-5 is a non-reusable, active launch vehicle manufactured by RKK Energiya. It undertook its inaugural launch on 04/30/2026.
Soyuz-5, also named Irtysh is a planned Russian rocket that is being developed by JSC SRC Progress, formerly within "Project Feniks." It will replace the capability of Zenit-2 and Proton Medium. It will initially be a two-stage rocket, but Soyuz 5 can be enhanced with an optional Blok DM-03 upper stage for geostationary missions.
The rocket is loosely based on the Zenit launch vehicle with a RD-171MV engine on the 1st stage, enlarged to 4.1 m in diameter, while the 2nd stage is powered by 2 RD-0124MS engines derived from engines used on the 3rd stage of the Soyuz-2.1b. The Soyuz-5 can lift 17 tonnes to a Low Earth orbit.
Soyuz-5 Specifications
| Alias | Irtysh |
|---|---|
| Length | 65.258 m |
| Diameter | 4.1 m |
| Stages | 2-3 |
| Launch Mass | 525 T |
| Takeoff Thrust | 7257 kN |
| LEO Capacity | 17000 kg |
| GTO Capacity | 5000 kg |
Soyuz-5 Launch Record
| Total Launches | 1 |
|---|---|
| Successful Launches | 1 |
| Consecutive Successful Launches | 1 |