Soyuz 2.1a

Soyuz family · Unknown

The Soyuz 2.1A converted the flight control system from analog to digital, which allowed launch from fixed platforms. It also allowed big fairings and payloads. It is currently used for crewed Soyuz and Progress flights to the ISS.

Height46.3 m

Mass312,000 kg

Stages3

Success Rate98.2%

Diameter3.0 m

Payload to LEO7,020 kg

Payload to GTO2,810 kg

Boosters0

Total Launches57

Recent Missions (24)

TBD

Soyuz MS-29

Soyuz 2.1a

Russian Federal Space Agency (ROSCOSMOS)

31/6

Jul 14, 2026 · 02:43 PM UTC

Soyuz 2.1a

Recent Missions (24)

Soyuz MS-29

Progress MS-35 (96P)

Progress MS-36 (97P)

Progress MS-34 (95P)

Progress MS-33 (94P)

Obzor-R No.1

Soyuz MS-28

Progress MS-32 (93P)

Progress MS-31 (92P)

Soyuz MS-27

Progress MS-30 (91P)

Progress MS-29 (90P)

Kosmos 2579 (Bars-M No. 6)

Soyuz MS-26

Progress MS-28 (89P)

Progress MS-27 (88P)

Soyuz MS-25

Progress MS-26 (87P)

Progress MS-25 (86P)

Soyuz MS-24

Progress MS-24 (85P)

Progress MS-23 (84P)

Kosmos 2567 (Bars-M No. 4)

Soyuz MS-23