Vladimir Aleksandrovich Dzhanibekov (Russian: Владимир Александрович Джанибеков, born 13 May 1942) is a former cosmonaut who made five flights. Dzhanibekov made five flights: Soyuz 27, Soyuz 39, Soyuz T-6, Soyuz T-12 and Soyuz T-13. In all he had spent 145 days, 15 hours and 56 minutes in space over these five missions. He had also performed two EVAs with a total time of 8 hours and 35 minutes. In 1985 he noted the effects of the tennis racket theorem, subsequently also called the Dzhanibekov effect, by showing that an object's second principal axis is unstable while in free-fall rotation.

Soyuz-U | Soyuz 26

Russian Federal Space Agency (ROSCOSMOS) | Russia
Baikonur Cosmodrome, Republic of Kazakhstan
Dec. 10, 1977, 1:18 a.m.

Status: Success

Mission:

Soyuz 26 carried Salyut 6 EO-1, which was the first long-duration expedition to the Salyut 6 space station. The mission began on December 10, 1977, 01:18:40 UTC, launching Commander Yuri Romanenko and Flight Engineer Georgi Grechko into orbit. They docked with the station the next day. During their 96-day stay in orbit, crew performed the first Soviet spacewalk since 1969 with the purpose of inspecting one of the stations docking ports. They also performed Earth observation, carried out various experiments and tested new navigation system. EO-1 crew was visited by Soyuz 27 and Soyuz 28 crews; the first ever refueling of the station was performed by an uncrewed cargo ship Progress 1 during the mission. EO-1 crew swapped vehicles with the Soyuz 27 crew, which allowed for a longer stay in orbit. EO-1 crew returned in the Soyuz 27 spacecraft, landing safely back on Earth on March 16, 1978, 11:18:47 UTC.

Low Earth Orbit

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Soyuz-U | Soyuz 27

Russian Federal Space Agency (ROSCOSMOS) | Russia
Baikonur Cosmodrome, Republic of Kazakhstan
Jan. 10, 1978, 12:26 p.m.

Status: Success

Mission:

Soyuz 27 carried Salyut 6 EP-1 mission to the Salyut 6 space station. The mission began on January 10, 1978, 12:26:00 UTC, launching Commander Vladimir Dzhanibekov and Flight Engineer Oleg Makarov into orbit. They docked with the station the next day. During their 5-day stay on the station, crew performed various scientific and technological experiments. EP-1 crew swapped vehicles with the Soyuz 26 (EO-1 expedition) crew, which allowed for a longer stay in orbit for EO-1. EP-1 crew returned in the Soyuz 26 spacecraft, landing safely back on Earth on January 16, 1978, 11:24:58 UTC.

Low Earth Orbit

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Soyuz-U | Soyuz 39

Russian Federal Space Agency (ROSCOSMOS) | Russia
Baikonur Cosmodrome, Republic of Kazakhstan
March 22, 1981, 2:58 p.m.

Status: Success

Mission:

Soyuz 39 was the 15th mission to visit the Salyut 6 space station and carried the the EP-9 crew, which visited the long-duration Soyuz T-4 resident crew. The mission began on March 22, 1981, 14:58, launching Commander Vladimir Dzhanibekov and Research Cosmonaut Jügderdemidiin Gürragchaa, the first Mongolian cosmonaut, into orbit. They docked with the station the next day. During their 7-day stay on the station, EP-9 crew conducted Earth observation, material, medical and other experiments, including cosmic radiation research. The mission concluded with a safe landing back on Earth on March 30, 1981, 11:40:58 UTC.

Low Earth Orbit

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Soyuz-U | Soyuz T-6

Russian Federal Space Agency (ROSCOSMOS) | Russia
Baikonur Cosmodrome, Republic of Kazakhstan
June 24, 1982, 4:29 p.m.

Status: Success

Mission:

Soyuz T-6 was the second mission to the Salyut 7 space station and the first to visit the long-duration Soyuz T-5 resident crew of the station. The mission began on June 24, 1982, 16:29:48 UTC, launching Commander Vladimir Dzhanibekov, Flight Engineer Aleksandr Ivanchenkov and Research Cosmonaut Jean-Loup Chrétien, the first French cosmonaut, into orbit. They docked with the station the next day. During their 7-day stay on the station, crew performed various scientific and medical experiments. The mission concluded with a safe landing back on Earth on July 2, 1982, 14:20:40 UTC.

Low Earth Orbit

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Soyuz-U2 | Soyuz T-12

Soviet Space Program | Russia
Baikonur Cosmodrome, Republic of Kazakhstan
July 17, 1984, 5:40 p.m.

Status: Success

Mission:

Soyuz T-12 was the seventh mission to visit the Salyut 7 space station and the second to visit the long-duration Soyuz T-10 resident crew of the station. The mission began on July 17, 1984, 17:40:54 UTC, launching Commander Vladimir Dzhanibekov, Flight Engineer Svetlana Savitskaya and Research Igor Volk into orbit. They docked with the station the next day. During their 9-day stay on the station, crew carried out various experiments, and Savitskaya became the first woman to ever perform a spacewalk. The mission concluded with a safe landing back on Earth on July 29, 1984, 12:55:30 UTC.

Low Earth Orbit

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Soyuz-U2 | Soyuz T-13

Soviet Space Program | Russia
Baikonur Cosmodrome, Republic of Kazakhstan
June 6, 1985, 6:39 a.m.

Status: Success

Mission:

Soyuz T-13 was the eighth mission to visit the Salyut 7 space station. The mission began on June 6, 1985, 06:39:52 UTC, launching Commander Vladimir Dzhanibekov and Flight Engineer Viktor Savinykh into orbit. Following a two day solo flight Soyuz T-13 docked with Salyut 7 on June 08. When arriving there, the station had been vacant since eight month and it had been crippled by a solar array problem. Soyuz T-13 was the first Soyuz to dock manually with an inert Salyut. During their stay on the station, crew had to perform numerous repairs to restore life support, power and other systems, and conducted two EVAs for the same reasons. Cosmonauts were visited by a Progress cargo spacecraft and a Soyuz T-14, who joined the work on the station. Vladimir Dzhanibekov returned to Earth with the Soyuz T-14 crew member, while Viktor Savinykh stayed to continue his work on the station. The mission concluded with a safe landing back on Earth on September 26, 1985, 09:51:58 UTC.

Low Earth Orbit

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