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Salyut program insignia.svg
Station statistics
Launch29 July 1972
03:21 UTC
Launch padLC-81/24, Baikonur Cosmodrome, USSR
Mass18,425 kg
(40,620 lb)
Length14 m
Width4.15 m
Pressurised volumec.100 m³ (3,500 ft³)
Days in orbit0 days
(Launch failure)
References: [1][2]
RP1357 p64 Salyut 1.svg
Planned orbital configuration of DOS-2

DOS-2 designation given to a space station, launched as part of the Salyut programme, which was lost in a launch failure on 29 July 1972, when the failure of the second stage of its Proton-K launch vehicle prevented the station from achieving orbit. It instead fell into the Pacific Ocean. The station, which would have been given the designation Salyut 2 had it reached orbit, was structurally identical to Salyut 1, as it had been assembled as a backup unit for that station.[1] Four teams of cosmonauts were formed to crew the station, of which two would have flown:[1]

Whilst Salyut 1 has been visited by two three-man crews (Soyuz 10 and Soyuz 11), following modifications to the Soyuz 7KT-OK spacecraft (resulting in the new model Soyuz 7K-T) following the deaths of the crew of Soyuz 11, the spacecraft could only carry two cosmonauts, thus DOS-2 would have been manned by two crews of two. Following the loss of the station, the crews were transferred to the DOS-3 programme.[1]


  1. ^ a b c d Grujica S. Ivanovich (2008). Salyut: The First Space Station. Springer-Praxis. ISBN 978-0-387-73585-6.
  2. ^ David Portree (1995). "Mir Hardware Heritage" (PDF). NASA. Archived from the original (PDF) on 2009-08-03.

This page was last edited on 19 September 2020, at 14:14
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