Length: 46.3 m
Diameter: 2.95 m
Launch Mass: 312 T
Low Earth Orbit Capacity: 8200 kg
The Soyuz STB Fregat was manufactured by Progress Rocket Space Center with the first launch on 2011-10-21. Soyuz STB Fregat has 13 successful launches and 1 failed launches with a total of 14 launches. 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.
Progress Rocket Space Centre, formerly known as TsSKB-Progress, is a space science and aerospace research company which is known for manufacturing launch vehicles and satellites. Most notably, Progress Rocket Space Centre is the manufacturer of Soyuz launch vehicles. Progress Rocket Space Center is a Commercial RUS entity that was founded in 1996 and is administered by Dmitry Baranov.
Progress Rocket Space Center has 44 successful launches and 1 failed launches with a total of 45 launches.