Kosmos 140

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Kosmos 140

Crew:
Unmanned

Launch:
    Location: Baikonur, Site 1/5
    Date: 7 February 1967
    Time: 03:21:00 UTC

Landed:
    Date: 9 February 1967
    Time: ~02:52:00 UTC
    Aral Sea, Kazakhstan

Flight Duration:
~1 day, 23 hours, 31 minutes

This was the third and final test of a Soyuz spacecraft. As before, there were problems with the attidude control system and excessive fuel consumption. The control system malfunctioned again during reentry, leading to a steep ballistic reentry. A 30 cm hole was burned in the heat shield. This would have been fatal to any occupants. The craft landed and sank in the Aral Sea, and had to be retreived by divers.

The dismal performance was deemed "good enough" for the planned docking of Soyuz 1 and Soyuz 2.

Page last modified: 25 February 2026 18:55:06.