Soyuz ST-B/Fregat-MT
Soyuz ST-B/Fregat-MT was the higher-performance French Guiana launch configuration based on Soyuz-2.1b, adapted for the Guiana Space Centre and paired with the enlarged-propellant Fregat-MT upper stage. Arianespace operated the expendable configuration from the first Kourou Soyuz launch in 2011 through the final Soyuz flight from Europe's Spaceport in 2022.
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Identity
- Aliases
- Soyuz-ST-B/Fregat-MTSoyuz ST-B Fregat-MTSoyuz ST-BSoyuz-ST-BSoyuz 2.1b ST-B
- Family Name
- Soyuz ST
- Full Name
- Soyuz ST-B/Fregat-MT
- Status
- retired
- Type
- rocket
- Variant Name
- ST-B/Fregat-MT
Details
- Description
- Soyuz ST-B/Fregat-MT was the higher-performance French Guiana launch configuration based on Soyuz-2.1b, adapted for the Guiana Space Centre and paired with the enlarged-propellant Fregat-MT upper stage. Arianespace operated the expendable configuration from the first Kourou Soyuz launch in 2011 through the final Soyuz flight from Europe's Spaceport in 2022.
- First Flight Year
- 2,011
- Last Flight Year
- 2,022
- Operator
- Parent Vehicle Family
- Propulsion Configurations
- Entries
- Nested value
- Nested value
- Nested value
- Nested value
- Name
- Soyuz ST-B/Fregat-MT exact configuration
- Notes
- The ST-B branch is kept distinct from Soyuz ST-A/Fregat and from the Soyuz-2.1b base sibling. ESA identifies four RD-107A strap-on boosters, one RD-108A core, the RD-0124 third stage, and the Fregat-MT upper composite; no generic R-7 family substitution is used.
- Rocket Specs
- Payload Capacity Kg
- Gto
- 3,250
- Sso
- 4,900
- Reusability
- expendable
- Stages Count
- 4
- Strap On Boosters Count
- 4
Links
Assets & Meta
- Creation Time
- July 13, 2026 at 09:57:05 UTC
- Updated Time
- August 1, 2026 at 15:32:34 UTC
- Image
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Other
- Search Name
- Soyuz ST-B/Fregat-MT Soyuz-ST-B/Fregat-MT Soyuz ST-B Fregat-MT Soyuz ST-B Soyuz-ST-B Soyuz 2.1b ST-B