Soyuz STB
RUS Wikipedia 
Built & Operated By
Progress Rocket Space Center
Commercial · founded 1996
Family
Soyuz
variant STB/Fregat
Maiden Flight
21 OCT 2011
About
The 2.1b version adds an upgraded engine (RD-0124) with improved performance to the second stage. First launch took place from Plesetsk Cosmodrome Site 43 on 26 July 2008 with a classified military payload. The 2.1b/ST version is sometimes called Soyuz ST-B.
Vehicle Specifications
Height
46.3 m
Diameter
2.95 m
Launch Mass
312 T
Stages
3
Configuration
Expendable
Launch Record
Total Launches
14
Successful
13
Failed
1
Consecutive
11
Performance
To LEO
8,200 kg
To GTO
3,250 kg