Rocket file · LV-171
Soyuz STB Fregat
Soyuz STB Fregat is an expendable launch vehicle built by Progress Rocket Space Center. It stands 46.3 m tall, lifts 8,200 kg to low Earth orbit, first flew on 21 October 2011. It has flown 14 times with 13 successes, a success rate of 92.9%. It has nothing on the Launch Library 2 schedule right now.
Specification
Vehicle spec sheet
As listed by Launch Library 2. The cost is Launch Library’s figure, not a quoted price. Figures for rockets outside the sixty most-flown were last read on 2026-11-05.
Flight record
Reliability
About Soyuz STB
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.
Upcoming flights
Manifest
Soyuz STB is retired, and no flight is filed.
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Common questions
- How many times has Soyuz STB Fregat flown?
- 14 times, with 13 successes and 1 failures.
- What is Soyuz STB Fregat's success rate?
- 92.9%. That's 13 successful flights out of 14 attempts.
- How much can Soyuz STB Fregat lift to orbit?
- Launch Library 2 lists Soyuz STB Fregat at 8,200 kg to low Earth orbit and 3,250 kg to geostationary transfer orbit.
- Is Soyuz STB Fregat reusable?
- No. Launch Library 2 lists Soyuz STB Fregat as expendable, so no stage is recovered to fly again.