Soyuz STB Fregat
Soyuz familyProgress Rocket Space CenterRetired
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.
Specifications
- Thrust
- 4,146 kN
- Height
- 46.3 m
- Diameter
- 2.95 m
- Launch mass
- 312 t
- Stages
- 3
- LEO capacity
- 8,200 kg
- GTO capacity
- 3,250 kg
- SSO capacity
- 4,900 kg
Specifications from Launch Library. Figures the operator has not published are omitted.
Flight record
14flightswith a definitive outcome
92.9%success rate13 of 14
11success streakcurrent
Counted from padside's own launch record, the same basis as the stats page.