Encyclopedia Astronautica
Soyuz 25A


Crew: Berezovoi, Lisun. Mission to the Salyut 5 space station, cancelled when fuel reserves aboard the station were 70 kg below those required for the planned 14 day mission. Backup crew: Kozelsky, Preobrazhensky.

A Soyuz 25 mission to the Salyut 5 space station with the crew of Berzovoi and Lisun was to have followed Soyuz 24. However during the four months it took to prepare the Soyuz, Salyut 5 consumed higher than expected fuel in maintaining the station's orientation. As a result, in the opinion of Glushko (Chief Designer of the Soyuz), the fuel reserves were 70 kg below those required for the planned 14 day mission. He therefore refused to ready another Soyuz for the mission. The flight was cancelled over the objections of Chelomei. The spacecraft allocated for Soyuz-25 flew as Soyuz 30 to Glushko's civilian Salyut station.

First Launch: 1977 July.

More... - Chronology...


Associated People
  • Lisun Lisun, Mikhail Ivanovich (1935-) Ukrainian engineer cosmonaut, 1965-1989. More...
  • Preobrazhensky Preobrazhensky, Vladimir Yevgenyevich (1939-1993) Russian engineer cosmonaut, 1965-1980. Graduated from Moscow Aviation Institute Soviet Air Force, liaising with aircraft industrial enterprises. Cosmonaut training November 1965 - December 1967. Worked at Gagarin Cosmonaut Training Center. Killed in an auto crash. More...
  • Kozelsky Kozelsky, Vladimir Sergeyevich (1942-) Russian pilot cosmonaut, 1967-1983. Graduated from Kachinsk, 1963; Monino, 1981. Cosmonaut training 1967.05-1969.08.18. Later Deputy Mir Flight Director. Retired in 1992. More...
  • Berezovoi Berezovoi, Anatoli Nikolayevich (1942-) Russian pilot cosmonaut. Flew on Salyut 7 EO-1. More...

See also
Associated Programs
  • Almaz The only manned military space station to have ever flown, it served only to prove that manned stations provided no cost-effective substitute to unmanned military satellites. Derivatives of the design continue in service into the 21st Century as modules of the Salyut, Mir, and International Space Stations. More...

Soyuz 25A Chronology


1977 July - .
  • Soyuz 25A (cancelled) - . Crew: Berezovoi; Lisun. Backup Crew: Kozelsky; Preobrazhensky. Nation: USSR. Related Persons: Chelomei; Glushko; Berezovoi; Lisun; Kozelsky; Preobrazhensky. Program: Almaz. Flight: Soyuz 25A. Spacecraft: Soyuz 7K-T. A Soyuz 25 mission to the Salyut 5 space station with the crew of Berzovoi and Lisun was to have followed Soyuz 24. However during the four months it took to prepare the Soyuz, Salyut 5 consumed higher than expected fuel in maintaining the station's orientation. The flight was cancelled and the spacecraft allocated for Soyuz 25 flew as Soyuz 30 to Glushko's civilian Salyut station.

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