- Family: Soyuz
- Length: 46.3 m
- Diameter: 2.95 m
- Launch Mass: 312 T
- Low Earth Orbit Capacity: 8200 kg
The Soyuz 2.1b was manufactured by Progress Rocket Space Center with the first launch on 2008-07-26. Soyuz 2.1b has 15 successful launches and 0 failed launches with a total of 15 launches. Soyuz-2 is the 21st-century version of the Russian Soyuz rocket. In its basic form, it is a three-stage carrier rocket for placing payloads into low Earth orbit. The 2.1b version adds an upgraded engine (RD-0124) with improved performance to the second stage.