🚀Launchpad

Soyuz STB Fregat

Progress Rocket Space Center

Manufacturer
Progress Rocket Space Center
Family
Soyuz, Soyuz 2
Maiden flight
2011-10-21
Length
46.3 m
Diameter
2.95 m
Payload to LEO
8,200 kg
Payload to GTO
3,250 kg
Launches
14
Successful
13

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.