Soyuz 7K-OKS explained

Soyuz 7K-OKS
Size:190px
Manufacturer:Experimental Design Bureau
(OKB-1)
Country:Soviet Union
Applications:Crewed spacecraft to dock with space station
Orbits:Low Earth orbit
Operator:Soviet space program
Lifetime:Up to 35 days
Derivedfrom:Soyuz 7K-OK
Status:No longer in service
Launched:2
First:Soyuz 10
22 April 1971
Last:Soyuz 11
6 June 1971
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  • Soyuz 7K-OKS (also known as Soyuz 7KT-OK) is a version of the Soyuz spacecraft and was the first spacecraft designed for space station flights. Its only crewed flights were conducted in 1971, with Soyuz 10 and Soyuz 11.

    Design

    The two craft of the Soyuz 7K-OKS generation were modified from the original Soyuz 7K-OK. The new "probe and drogue" docking mechanism, which was first used by these two missions, featured an internal docking hatch that allowed for the first time internal transfer between Soviet spacecraft. This "probe and drogue" docking mechanism introduced with Soyuz 7K-OKS is still in use today at the International Space Station (ISS). The external toroidal fuel tank, a holdover from the original lunar mission models of the Soyuz, was dropped from the 7K-OKS since it was unneeded for Earth orbital flights.[1]

    Flights

    The Soyuz 7K-OKS flew only twice, Soyuz 10 and Soyuz 11.[1]

    On its maiden flight, the Soyuz 7K-OKS successfully launched into Earth orbit, but failed to dock completely with the Salyut 1 space station. Upon reentry, the spacecraft encountered problems with toxic fumes.[2]

    This generation of Soyuz spacecraft is notable for the first successful delivery of crew to the first space station Salyut 1 by Soyuz 11 – this success was however overshadowed by the death of the crew, who were killed when the capsule depressurised during the re-entry phase.[3]

    Missions

    External links

    Notes and References

    1. Web site: Soyuz 7KT-OK. Astronautix . https://web.archive.org/web/20100103001120/http://astronautix.com/craft/soy7ktok.htm. 3 January 2010. dead. 8 November 2010.
    2. Web site: Soyuz 10. https://web.archive.org/web/20090505082833/http://www.astronautix.com/flights/soyuz10.htm . Astronautix. 5 May 2009. dead. 8 November 2010.
    3. Web site: Soyuz 11 1971-053A. NASA. 14 May 2020. 6 October 2020.