Soyuz 2.1v
Soyuz‑2.1v prepared for the launch of the Kosmos 2511 and 2512 military satellites in December 2015 | |
| Function | Small-lift launch vehicle |
|---|---|
| Manufacturer | RKTs Progress |
| Country of origin | Russia |
| Size | |
| Height | 44 m (144 ft) |
| Diameter | 3 m (9.8 ft) |
| Mass | 158,000 kg (348,000 lb) |
| Stages | 2 |
| Capacity | |
| Payload to LEO | |
| Altitude | 200 km (120 mi) |
| Orbital inclination | 51.8° |
| Mass | 2,850 kg (6,280 lb) |
| Payload to LEO | |
| Altitude | 200 km (120 mi) |
| Orbital inclination | 62.8° |
| Mass | 2,800 kg (6,200 lb) |
| Associated rockets | |
| Family | R-7 (Soyuz) |
| Based on | Soyuz-2 |
| Comparable | Long March 2C PSLV |
| Launch history | |
| Status | Retired |
| Launch sites | Plesetsk, Site 43/4 |
| Total launches | 13 |
| Success(es) | 12 |
| Partial failure(s) | 1 |
| First flight | 28 December 2013 |
| Last flight | 5 February 2025 |
| First stage | |
| Height | 27.77 m (91.1 ft) |
| Diameter | 2.95 m (9 ft 8 in) |
| Empty mass | 11,000 kg (24,000 lb) |
| Gross mass | 129,000 kg (284,000 lb) |
| Powered by | |
| Maximum thrust |
|
| Specific impulse |
|
| Burn time | 225 seconds |
| Propellant | LOX / RP-1 |
| Second stage – Block I | |
| Height | 7.95 m (26.1 ft) |
| Diameter | 3 m (9.8 ft) |
| Empty mass | 2,380 kg (5,250 lb) |
| Gross mass | 25,380 kg (55,950 lb) |
| Powered by | 1 × RD-0124 |
| Maximum thrust | 294 kN (66,000 lbf) |
| Specific impulse | 359 s (3.52 km/s) |
| Burn time | 275 seconds |
| Propellant | LOX / RP-1 |
| Third stage (optional) – Volga | |
| Height | 1.025 m (3 ft 4.4 in) |
| Diameter | 3.2 m (10 ft) |
| Empty mass | 840 kg (1,850 lb) |
| Propellant mass | 300–900 kg (660–1,980 lb) |
| Powered by | 1 × 17D64 |
| Maximum thrust | 2.94 kN (660 lbf) |
| Specific impulse | 307 s (3.01 km/s) |
| Burn time | 410 seconds |
| Propellant | N2O4 / UDMH |
The Soyuz‑2.1v (Russian: Союз‑2.1в, lit. 'Union‑2.1c', GRAU index: 14A15) was a Russian expendable small-lift launch vehicle, developed as a derivative of the Soyuz-2 series. It is notable for omitting the four strap-on boosters common to other R-7 family rockets, making it the first R-7 variant without them.
Developed by the Progress Rocket Space Centre (RKTs Progress) in Samara, the Soyuz‑2.1v was originally known as Soyuz‑1 during early development. Launches were conducted from the Plesetsk Cosmodrome in northwest Russia, and were expected to also be conducted from the Vostochny Cosmodrome in eastern Russia, and the Baikonur Cosmodrome in Kazakhstan, but none ever took place.