45°59′46″N 63°33′51″E / 45.99611°N 63.56417°E / 45.99611; 63.56417

Site 31/6

A Soyuz-2 rocket at LC-31/6
Launch site	Baikonur Cosmodrome
Location	Kazakhstan
Operator	RVSN, VKS, Roscosmos
Total launches	TBC
Launch pad(s)	1
Orbital inclination range	49° – 99°
Launch history Status Active Launches 433 First launch 14 January 1961 R-7A Last launch 31 March 2024 Soyuz 2.1b / Resurs-P No.4 Associated rockets R-7A Vostok Voskhod Polyot Molniya Soyuz Soyuz-L Soyuz-U Soyuz-U2 Soyuz-FG/Fregat Soyuz-2 (current)

Baikonur Site 31, also known as Site 31/6 at the Baikonur Cosmodrome, in Kazakhstan, is a launch site used by derivatives of the R-7 Semyorka missile. Since Roscosmos' change from flying crew on the Soyuz-FG to the Soyuz-2 launch vehicle for crewed flights in 2020, it has served as the primary launch site for Soyuz flights to the International Space Station. It took over from Site 1/5 (Gagarin's Start) since it failed to receive funding to modernize it for the slightly larger Soyuz-2 rocket.^[1]

Before that, it only saw a handful of crewed flights when Site 1/5 was unavailable (Soyuz TMA-06M, Soyuz TMA-15M, Soyuz MS-02).

It was first used on 14 January 1961, for an R-7A ICBM test mission. As of 2023 it is currently used for Soyuz-2 launches. In the 1970s and early 1980s, several crewed missions were launched from the site.

A panorama of the Baikonur Cosmodrome Site 31 taken from atop the Soyuz support structure. A Zenit facility can be seen in the distance.

See also

• Gagarin's Start (Baikonur Site 1)

References

• "Baikonur LC31". Encyclopedia Astronautica. Archived from the original on 4 September 2003.

Further reading

• J. K. Golovanov, "Korolev: Facts and myths", Nauka, 1994, ISBN 5-02-000822-2;
• "Rockets and people" – B. E. Chertok, M: "mechanical engineering", 1999 ISBN 5-217-02942-0 (in Russian);
• «A breakthrough in space» - Konstantin Vasilyevich Gerchik, M: LLC "Veles", 1994 - ISBN 5-87955-001-X;
• "Testing of rocket and space technology - the business of my life" Events and facts - A.I. Ostashev, Korolyov, 2001 ;
• "Baikonur. Korolev. Yangel" - M. I. Kuznetsk, Voronezh: IPF "Voronezh", 1997, ISBN 5-89981-117-X;
• "Look back and look ahead. Notes of a military engineer" - Rjazhsky A. A., 2004, SC. first, the publishing house of the "Heroes of the Fatherland" ISBN 5-91017-018-X.
• "Rocket and space feat Baikonur" - Vladimir Порошков, the "Patriot" publishers 2007. ISBN 5-7030-0969-3
• "Unknown Baikonur" - edited by B. I. Posysaeva, M.: "globe", 2001. ISBN 5-8155-0051-8

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