Soyuz STA
RUS Wikipedia 
Built & Operated By
Progress Rocket Space Center
Commercial · founded 1996
Family
Soyuz
variant Fregat
Maiden Flight
17 DEC 2011
About
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.
Vehicle Specifications
Height
46.3 m
Diameter
2.95 m
Launch Mass
312 T
Stages
3
Configuration
Expendable
Launch Record
Total Launches
8
Successful
8
Failed
0
Consecutive
8
Performance
To LEO
7,020 kg
To GTO
2,810 kg