Soyuz 2.1a
Description
The 2.1a version includes conversion from analog to digital flight control system and uprated engines on the booster and the first stage with improved injection systems. The new digital flight control and telemetry systems allow the rocket to launch from a fixed rather than angled launch platform and adjust its heading in flight. A digital control system also enables the launch of larger commercial satellites with wider and longer payload fairings such as the ST-type fairing. These fairings introduce too much aerodynamic instability for the old analog system to handle. This stage continues to use the RD-0110 engine. The 2.1a/ST version is sometimes called Soyuz ST-A.
Missions
87
Success Rate
98.3%
Successes
85
Failures
1
Success Streak
65
Partial Failures
1
Next Up
Progress MS-33
Previous
Obzor-R n°1
Soyuz MS-28
Configurations
Soyuz ST-A/Fregat-M
Active Since 2014
Price
$30.00 million
Rocket
Height: 46.94m
Payload to Orbit
LEO: 8,500 kg
GTO: 3,000 kg
Liftoff Thrust
4,317 Kilonewtons
Fairing
Diameter: 4.11m
Height: 11.43m
Stages
4
Strap-ons
4
Soyuz ST-A/Fregat
Active Since 2011
Price
$30.00 million
Rocket
Height: 46.94m
Payload to Orbit
LEO: 8,500 kg
GTO: 2,810 kg
Liftoff Thrust
4,317 Kilonewtons
Fairing
Diameter: 4.11m
Height: 11.43m
Stages
4
Strap-ons
4
Soyuz 2.1a/Volga
Active Since 2016
Price
$23.00 million
Rocket
Height: 46.94m
Payload to Orbit
LEO: 7,020 kg
GTO: 2,000 kg
Liftoff Thrust
4,550 Kilonewtons
Fairing
Diameter: 4.11m
Height: 10.2m
Stages
4
Strap-ons
4
Soyuz 2.1a/Fregat-M
Active Since 2006
Price
$23.00 million
Rocket
Height: 46.94m
Payload to Orbit
LEO: 7,020 kg
GTO: 2,810 kg
Liftoff Thrust
4,550 Kilonewtons
Fairing
Diameter: 4.11m
Height: 10.2m
Stages
4
Strap-ons
4
Soyuz 2.1a/Fregat
Active Since 2006
Price
$23.00 million
Rocket
Height: 46.94m
Payload to Orbit
LEO: 7,020 kg
GTO: 2,810 kg
Liftoff Thrust
4,550 Kilonewtons
Fairing
Diameter: 4.11m
Height: 10.2m
Stages
4
Strap-ons
4
