Soyuz TM-5

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Soyuz TM-5
COSPAR ID 1988-048A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 19204
Mission duration91 days, 10 hours, 46 minutes, 25 seconds [1]
Orbits completed~1,475
Spacecraft properties
SpacecraftSoyuz 7K-STM No. 55
Spacecraft type Soyuz-TM
Manufacturer NPO Energia
Launch mass7,000 kilograms (15,000 lb)
Crew
Crew size3 up
2 down
Launching Anatoly Solovyev
Viktor Savinykh
Aleksandr Aleksandrov
Landing Vladimir Lyakhov
Abdul Ahad Mohmand
CallsignРодни́к (Rodnik- Spring)
Start of mission
Launch date7 June 1988, 14:03:13 (1988-06-07UTC14:03:13Z) UTC [1]
Rocket Soyuz-U2
Launch site Baikonur 1/5
End of mission
Landing date7 September 1988, 00:49:38 (1988-09-07UTC00:49:39Z) UTC
Landing site202 kilometres (126 mi) SE of Dzhezkazgan
Orbital parameters
Reference system Geocentric
Regime Low Earth
Perigee altitude 173 kilometres (107 mi)
Apogee altitude 241 kilometres (150 mi)
Inclination ~51.6 degrees
Period 88.6 minutes
Docking with Mir [2]
Docking date9 June 1988, 15:57:10 UTC
Undocking date5 September 1988, 23:54:57 UTC
Soyuz TM-5 mission patch.svg
Soyuz programme
(Crewed missions)
 

Soyuz TM-5 was a crewed Soyuz spaceflight to Mir. It was launched on June 7, 1988, carrying the Mir EP-2 mission's three-person crew. This week-long stay on Mir occurred during the third long-duration Mir expedition, Mir EO-3. The crew of EP-2 returned to Earth aboard Soyuz TM-4, while the TM-5 spacecraft remained docked to Mir, acting as the lifeboat for the long-duration crew. On September 7, 1988, the TM-5 spacecraft undocked from Mir, and landed Mir EP-3 mission's two-person visiting crew. The de-orbit procedures for Soyuz were revised after this flight, as multiple issues almost prevented the descent module's safe de-orbit and landing.

Contents

Crew

Position Launching crewLanding crew
Commander Flag of the Soviet Union.svg   Anatoly Solovyev
Mir EP-2
First spaceflight
Flag of the Soviet Union.svg   Vladimir Lyakhov
Mir EP-3
Third and last spaceflight
Flight Engineer Flag of the Soviet Union.svg   Viktor Savinykh
Mir EP-2
Third and last spaceflight
None
Research Cosmonaut Flag of Bulgaria (1971-1990).svg   Aleksandr Aleksandrov
Mir EP-2
Only spaceflight
Flag of Afghanistan (1987-1992).svg   Abdul Ahad Mohmand
Mir EP-3
Only spaceflight
Aleksandrov was the first Bulgarian cosmonaut to visit a space station. Mohmand was the first Afghan cosmonaut.

Launch

Soyuz TM-5 launched on 1988 June 7 and arrived at Mir on June 9 carrying the second Bulgarian in space, Alexandrov (not to be confused with the Soviet cosmonaut of the same name). He became the first Bulgarian to reach a Soviet space station (Georgi Ivanov failed to reach Salyut 6 on Soyuz 33 in 1979Alexandrov was his backup). Their launch had been advanced by 2 weeks late in the planning stages to improve lighting conditions for the Rozhen astronomical experiment.

Landing

On September 5 cosmonauts Lyakhov and Mohmand undocked from Mir. They jettisoned the orbital module and made ready for deorbit burn to return to Earth. During descent, the spacecraft experienced a computer software problem combined with a sensor problem. [3] This caused their landing to be delayed by a full day. The Descent Module, where they spent this 24-hour period, had no sanitary facilities. Consequently, they soiled themselves. [4] They would not have been able to redock with Mir because they had discarded the docking system along with the orbital module. [4] Reentry occurred as normal on September 7. Following this incident, the Soviets decided that on future missions, they would retain the orbital module until after deorbit burn, as they had done on the Soyuz Ferry flights. [4]

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Mir EO-8 was the eighth crewed expedition to the space station Mir, lasting from December 1990 to May 1991. The crew, consisting of Russian cosmonauts Viktor Afanasyev and Musa Manarov, launched along with space journalist Toyohiro Akiyama on December 2, 1990 aboard Soyuz TM-11. Akiyama returned aboard Soyuz TM-10 with the outgoing Mir EO-7 crew on December 10. Afanasyev and Manarov returned aboard Soyuz TM-11 on May 26, 1991.

References

  1. 1 2 "Spacecraft "Soyuz TM-5"". space.kursknet. Archived from the original on 20 March 2011. Retrieved 26 November 2010.
  2. "Soyuz TM-5". Spacefacts.de. Retrieved 21 March 2021.
  3. David Michael Harland (February 2005). The story of Space Station Mir. Springer-Verlag. pp.  173. ISBN   0-387-23011-4.
  4. 1 2 3 D.S.F. Portree. "Mir Hardware Heritage" (PDF). NASA. Archived from the original (PDF) on 7 September 2009. Retrieved 26 November 2010.