Soyuz TMA-12M

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Soyuz TMA-12M
Soyuz TMA-12M approaches the station.jpg
Soyuz TMA-12M approaches the ISS, 27 March 2014.
Mission typeISS crew transport
Operator Roskosmos
COSPAR ID 2014-013A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 39622
Mission duration169 days, 5 hours, 6 minutes
Spacecraft properties
SpacecraftSoyuz 11F732A47 No.712
Spacecraft type Soyuz-TMA 11F747
Manufacturer RKK Energia
Crew
Crew size3
Members Aleksandr Skvortsov
Oleg Artemyev
Steven R. Swanson
CallsignCliff
Start of mission
Launch date25 March 2014, 21:17:23 (2014-03-25UTC21:17:23Z) UTC [1]
Rocket Soyuz-FG
Launch site Baikonur 1/5, Kazakhstan
End of mission
Landing date11 September 2014, 02:23 (2014-09-11UTC02:24Z) UTC
Landing site Kazakh Steppe, Kazakhstan
Orbital parameters
Reference system Geocentric
Regime Low Earth
Docking with ISS
Docking port Poisk zenith
Docking date27 March 2014
23:53 UTC [2]
Undocking date10 September 2014
23:01 UTC [3]
Time docked166 days, 23 hours, 8 minutes
Expedition 37 backup crew members in front of the Soyuz TMA spacecraft mock-up in Star City, Russia.jpg
(l-r) Swanson, Skvortsov and Artemyev
Soyuz programme
(Crewed missions)
 

Soyuz TMA-12M was a 2014 flight to the International Space Station. It transported three members of the Expedition 39 crew to the International Space Station. TMA-12M was the 121st flight of a Soyuz spacecraft since the first in 1967 and the 38th Soyuz mission to the ISS.

Contents

After a successful launch on 25 March 2014, docking was scheduled to occur on 26 March via the relatively new six-hour duration orbital trajectory. In the event, one of the orbital burns scheduled to refine the trajectory did not occur as planned, due to an attitude control problem in which the spacecraft was incorrectly oriented. [4] The rendezvous phase was subsequently replanned to the formerly-used two-day trajectory. Accordingly, TMA-12M arrived at the ISS on 27 March. [5] [6] The Soyuz remained docked to the ISS to serve as an emergency escape vehicle until undocking and landing as scheduled on 11 September 2014.

Crew

Position [7] Crew Member
Commander Flag of Russia.svg Aleksandr Skvortsov, RSA
Expedition 39
Second spaceflight
Flight Engineer 1 Flag of Russia.svg Oleg Artemyev, RSA
Expedition 39
First spaceflight
Flight Engineer 2 Flag of the United States.svg Steven R. Swanson, NASA
Expedition 39
Third and last spaceflight

Backup crew

Position [8] Crew Member
Commander Flag of Russia.svg Aleksandr Samokutyayev, RSA
Flight Engineer 1 Flag of Russia.svg Yelena Serova, RSA
Flight Engineer 2 Flag of the United States.svg Barry E. Wilmore, NASA

Mission highlights

Launch

Soyuz TMA-12M successfully launched aboard a Soyuz-FG rocket from the Baikonur Cosmodrome in Kazakhstan at 21:17 UTC on Tuesday, 25 March 2014 (3:17 AM Wednesday 26 March local time). Approximately nine minutes later, the spacecraft reached low Earth orbit. [9] [10]

Because of the nighttime launch and the fact that the International Space Station was orbiting over Baikonur at the time of lift-off, the launch of TMA-12M was visible from the ISS and NASA astronaut Richard Mastracchio was able to take a photograph of the view (see below in gallery). [5]

Rendezvous and docking

Originally, TMA-12M was scheduled to dock with the International Space Station's Poisk module at 03:04 UTC on 26 March 2014, with hatch opening scheduled for 04:45 UTC. The spacecraft was not able to perform the third course-correction successfully, however, and docking was rescheduled for Thursday, 27 March at 23:58 UTC at the earliest. The approach and docking phase of the mission was reverted to the previous two-day profile used in Soyuz flights before Soyuz TMA-08M, leaving the possibility of updating the mission profile after the nature of the issue was fully known. Initially, flight controllers suspected it was an issue with the attitude (orientation) control system. [5] [6] According to flight controllers, the crew was not in any danger and ample supplies were on board the Soyuz for the modified flight profile. [11]

On 26 March, the first two maneuvers of the revised 34-orbit rendezvous plan occurred without incident, with docking scheduled for 27 March, although engineers had yet to determine the exact cause of the initial failure. [12] Ultimately, the remainder of the rendezvous was nominal and TMA-12M successfully docked with the ISS at 23:53 UTC on 27 March, five minutes ahead of the rescheduled time, with hatch opening between the two spacecraft occurring at 02:35 UTC on 28 March. [2] [13]

Upon their arrival, Skvortsov, Artemyev and Swanson joined the crew of Expedition 39, as part of which they remained until they transferred to the crew of Expedition 40 after the May 2014 departure of Soyuz TMA-11M. The crew members of TMA-12M remained aboard the ISS until September 2014, when the spacecraft undocked and returned to Earth as scheduled. [14] [10]

Undocking and return to Earth

Expedition 40 commander Steven Swanson formally handed over command of the ISS to Expedition 41 commander Maksim Surayev on 9 September, the day before the mission's scheduled departure. After closing the hatches separating the station and Soyuz at 19:35 UTC on 10 September, TMA-12M undocked from the International Space Station at 23:01 UTC, ending the Expedition 40 mission and transferring control of the station to Expedition 41. The spacecraft executed a de-orbit burn at 01:30 UTC on 11 September and began re-entry at 2:01 UTC with landing occurring successfully in the Kazakh Steppe region of Kazakhstan at 2:23 UTC. [2] [3]

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References

  1. ↑ "NASA Consolidated Launch Schedule". NASA. Retrieved 13 March 2014.
  2. 1 2 3 Clark, Stephen. "Soyuz TMA-12M Mission Status Center". Spaceflight Now. Retrieved 27 March 2014.
  3. 1 2 "Station Trio Lands Completing 169 Days in Space". NASA. NASA.gov. 11 September 2014. Retrieved 11 September 2014.
  4. ↑ "Soyuz TMA-12M docking delayed following problematic burn". NASAspaceflight.com. 25 March 2014. Retrieved 27 March 2014.
  5. 1 2 3 "Expedition 39/40 Trio's Arrival at Space Station Delayed". NASA. 26 March 2014. Retrieved 26 March 2014.
  6. 1 2 Boyle, Alan (26 March 2014). "Engine Snag Forces Two-Day Delay in Space Station Arrival". NBC News. Retrieved 26 March 2014.
  7. ↑ "ESA astronaut Alexander Gerst to fly to Space Station in 2014". ESA. Retrieved 28 September 2011.
  8. ↑ astronaut.ru (2013). "Орбитальные полёты".
  9. ↑ "Coverage Set for Next Space Station Crew Launch". NASA. Retrieved 25 March 2014.
  10. 1 2 Bergin, Chris; Harding, Pete (25 March 2014). "Another trio set sail for the ISS onboard Soyuz TMA-12M". NASA Spaceflight. Retrieved 25 March 2014.
  11. ↑ Harwood, William (26 March 2014). "Soyuz sets off after station; rendezvous snag delays docking". CBS News. Retrieved 26 March 2014.
  12. ↑ Harwood, William (26 March 2014). "Soyuz on track for revised two-day station rendezvous". CBS News. Retrieved 26 March 2014.
  13. ↑ "NASA TV to Air Arrival of New Space Station Crew Thursday". NASA. 26 March 2014. Retrieved 28 March 2014.
  14. ↑ "Expedition39/40 Trio Launches to Complete Crew". NASA. 25 March 2014. Retrieved 25 March 2014.
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