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Soyuz 23
Part of Almaz Family

Soyuz 23

Soyuz 23
Credit: © Mark Wade

Docking with Salyut 5 military station aborted due to electronics failure. Crew nearly froze to death after an emergency landing in a lake in a blizzard at -20 deg C. It took hours before the capsule could be dragged to shore.

AKA: Radon (Radon). Launched: 1976-10-14. Returned: 1976-10-16. Number crew: 2 . Duration: 2.00 days.

The Soyuz 23 ferry spacecraft suffered a docking system failure. Sensors indicated an incorrect lateral velocity, causing unnecessary firing of the thrusters during rendezvous. The automatic system was turned off, but no fuel remained for a manual docking with the Salyut 5 space station. The capsule landed in Lake Tengiz in -20 deg C conditions in a snowstorm. The wet parachute filled and dragged the capsule below the surface, cooling the capsule. Heating systems had to be turned in the capsule to conserve battery power. Amphibious vehicles attempted to recover the spacecraft but could not reach it. Finally swimmers managed to attach a cable to a helicopter. The capsule was dragged for kilometers across the icy sea. Only in the morning was the crew able to emerge from the capsule. The recovery crews were surprised they were still alive.


More at: Soyuz 23.

Family: Manned spaceflight. People: Rozhdestvensky, Zudov. Country: Russia. Spacecraft: Soyuz 7K-T/A9. Launch Sites: Baikonur. Agency: MOM.

1976 October 14 - . 17:39 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. LV Family: R-7. Launch Vehicle: Soyuz 11A511.
  • Soyuz 23 - . Call Sign: Radon (Radon ). Crew: Rozhdestvensky, Zudov. Backup Crew: Glazkov, Gorbatko. Support Crew: Berezovoi, Lisun. Payload: Soyuz 7K-T(A9) s/n 65. Mass: 6,760 kg (14,900 lb). Nation: Russia. Related Persons: Berezovoi, Glazkov, Gorbatko, Lisun, Rozhdestvensky, Zudov. Agency: MOM. Program: Almaz. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 23. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T/A9. Duration: 2.00 days. Decay Date: 1976-10-16 . USAF Sat Cat: 9477 . COSPAR: 1976-100A. Apogee: 269 km (167 mi). Perigee: 239 km (148 mi). Inclination: 51.6000 deg. Period: 89.50 min.

    The Soyuz 23 ferry spacecraft suffered a docking system failure. Sensors indicated an incorrect lateral velocity, causing unnecessary firing of the thrusters during rendezvous. The automatic system was turned off, but no fuel remained for a manual docking by the crew.


1976 October 16 - .
  • Landing of Soyuz 23 - . Return Crew: Rozhdestvensky, Zudov. Nation: Russia. Related Persons: Rozhdestvensky, Zudov. Program: Almaz. Flight: Soyuz 23.

    The capsule landed at 17:46 GMT in Lake Tengiz in -20 deg C conditions in a snowstorm. The wet parachute filled and dragged the capsule below the surface, cooling the capsule. Heating systems had to be turned off in the capsule to conserve battery power. Amphibious vehicles attempted to recover the spacecraft but could not reach it. Finally swimmers managed to attach a cable to a helicopter. The capsule was dragged for kilometres across the icy sea. Only in the morning was the crew able to emerge from the capsule. The recovery crews were surprised they were still alive.



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