Soyuz 2

Quick Facts About Soyuz-2.

- Type: Orbital launch vehicle.

- Origin : Russia.

- Manufacturer: TsSKB-Progress (Samara), Chemical Automatics Design Bureau (Voronezh) .

- In service : 2.1a: 8 November 2004 - Active, 2.1b: 27 December 2006 - Active, 2.1v: 28 December 2013 - Active.

- Mass : 312,000 kg (688,000 lb).

- Length/Height : 46.3 m (152 ft).

- Diameter :2.95 m (9 ft 8 in).

- Payload to LEO : 2.1a: 7,020 kg (15,480 lb), 2.1b: 8,200 kg (18,100 lb).

- Payload to SSO : ST-A: 4,230 kg (9,330 lb), ST-B: 4,900 kg (10,800 lb).

- Payload to GTO : ST-A: 2,810 kg (6,190 lb), ST-B: 3,250 kg (7,170 lb).

- Payload to GSO : ST-B: 2,720 kg (6,000 lb).

- Propellant: Boosters/First/Second stage : LOX / RG-1 Upper stage(Optional) : N2O4 / UDMH .

- Engines: Boosters : 4 x RD-107A with thrust of 839.48 kN (188,720 lbf). First stage: 1 RD-108A with thrust of 792.41 kN (178,140 lbf). Second stage :(2.1a/STA) 1 RD-0110 with thrust of 298 kN (67,000 lbf). (2.1b/STB) 1x RD-0124 with thrust of 294.3 kN (66,200 lbf). Upper stage (optional) : (Fregat / Fregat-M / Fregat-MT) 1 x S5.92 with thrust of 19.85 kN (4,460 lbf).(Volga) 1 x 17D64 with thrust of 2.94 kN (660 lbf).

Compared to the previous versions of the Soyuz, the first-stage boosters and two core stages feature uprated engines with improved injection systems. Digital flight control and telemetry systems allow the rocket to be launched from a fixed launch platform, whereas the launch platforms for earlier Soyuz rockets had to be rotated as the rocket could not perform a roll to change its heading in flight.

Soyuz-2 is often flown with an upper stage, which allows it to lift payloads into higher orbits, such as Molniya and geosynchronous orbits. The upper stage is equipped with independent flight control and telemetry systems from those used in the rest of the rocket. The NPO Lavochkin manufactured Fregat is the most commonly used upper stage. The Soyuz-2 has replaced the Molniya-M, Soyuz-U and Soyuz-FG since 2010, 2017 and 2019 respectively.