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Soyuz 7KT-OK
Part of Soyuz
Soyuz 7K-OKS
Soyuz 7K-OKS
Credit: © Mark Wade
Russian manned spacecraft. This was a modification of Soyuz 7K-OK with a lightweight docking system and a crew transfer tunnel. Launched 1971.

AKA: 7K-OKS. Status: Operational 1971. First Launch: 1971-04-22. Last Launch: 1971-06-06. Number: 2 . Thrust: 4.09 kN (919 lbf). Gross mass: 6,790 kg (14,960 lb). Unfuelled mass: 6,290 kg (13,860 lb). Specific impulse: 282 s. Height: 7.94 m (26.04 ft). Span: 9.80 m (32.10 ft).

This was evidently derived from work done by Kozlov for the Soyuz 7K-TK ferry craft. It flew only twice. The Soyuz 10 mission could not dock with the Salyut 1 station despite several attempts. Soyuz 11 was successful until return to earth. A valve between the descent and orbital modules jarred open when the OM separated. The DM cabin atmosphere vented into space, killing the three man crew, who flew without spacesuits. After this the Soyuz underwent a complete safety redesign to the Soyuz 7K-T configuration.

Crew Size: 3. Orbital Storage: 35 days. Habitable Volume: 9.00 m3. Spacecraft delta v: 210 m/s (680 ft/sec). Electric System: 0.50 average kW.


More at: Soyuz 7KT-OK.

Family: Manned spacecraft, Space station orbit. Country: Russia. Engines: KTDU-35. Spacecraft: Soyuz 7K-OKS SA, Soyuz 7K-OKS BO, Soyuz 7K-OKS PAO. Flights: Soyuz 10, Soyuz 11. Launch Vehicles: R-7, Soyuz 11A511. Propellants: Nitric acid/Hydrazine. Projects: Salyut. Launch Sites: Baikonur, Baikonur LC1. Agency: Korolev bureau, MOM. Bibliography: 181, 185, 186, 187, 188, 2, 21, 283, 32, 33, 344, 36, 367, 376, 6, 60, 6905, 13133.
Photo Gallery

Soyuz ShroudsSoyuz Shrouds
Comparison of payload shroud and launch escape system development over the life of the Soyuz/Salyut/Mir program.
Credit: © Mark Wade


Panel Soyuz 7K-OKPanel Soyuz 7K-OK
Control panel of the initial earth orbit version of Soyuz.
Credit: © Mark Wade


Soyuz escape rocketSoyuz escape rocket
Soyuz launch escape system
Credit: © Mark Wade


Soyuz 7K-OKSSoyuz 7K-OKS
Credit: © Mark Wade


Soyuz 10Soyuz 10
Credit: Manufacturer Image



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