COSPAR ID | 1990-014A |
---|---|
SATCAT no. | 20494 |
Mission duration | 179 days, 1 hour, 17 minutes, 57 seconds |
Orbits completed | ~2,895 |
Spacecraft properties | |
Spacecraft | Soyuz 7K-STM No. 60 |
Spacecraft type | Soyuz-TM |
Manufacturer | NPO Energia |
Launch mass | 7,150 kilograms (15,760 lb) |
Crew | |
Crew size | 2 |
Members | Anatoly Solovyev Aleksandr Balandin |
Callsign | Родни́к (Rodnik- Spring) |
Start of mission | |
Launch date | 11 February 1990, 06:16:00 UTC |
Rocket | Soyuz-U2 |
End of mission | |
Landing date | 9 August 1990, 07:33:57 UTC |
Landing site | 70 kilometres (43 mi) NE of Arkalyk - 50.85 N; 67.28 E |
Orbital parameters | |
Reference system | Geocentric |
Regime | Low Earth |
Perigee altitude | 373 kilometres (232 mi) |
Apogee altitude | 387 kilometres (240 mi) |
Inclination | 51.6 degrees |
Period | 92.2 minutes |
Docking with Mir | |
Docking date | 13 February 1990, 06:37:47 UTC |
Undocking date | 9 August 1990, 04:08:49 UTC |
Soyuz programme (Crewed missions) |
Soyuz TM-9 was the ninth expedition to the Russian Space Station Mir. [1]
Position | Crew | |
---|---|---|
Commander | Anatoly Solovyev Second spaceflight | |
Flight Engineer | Aleksandr Balandin First spaceflight |
During docking, cosmonauts aboard Mir noticed that three of the eight thermal blankets (layers of foil vacuum-shield insulation) on the descent module of the approaching Soyuz-TM 9 spacecraft had come loose from their attachments near the heat shield, yet remained attached at their top ends. The main concern was that the capsule might cool down, permitting condensation to form inside and short out its electrical systems. There was also fear that the blankets might block the infrared vertical sensor, which oriented the module for reentry.
Three other areas of concern emerged: that the explosive bolts binding the service module to the descent module might fail to work after direct exposure to space, that the heat shield might be compromised by direct space exposure, and that an EVA to repair the blankets might cause additional damage. Consideration was given to flying Soyuz TM-10 with one cosmonaut aboard as a rescue mission. During an EVA, the cosmonauts folded back two of the three blankets and left the third alone. During reentry, the cosmonauts ejected both the orbital module and the service module simultaneously in an effort to minimize the chances that a blanket could snag. Normally the orbital module went first. The descent module suffered no damage as a result of its prolonged exposure to space conditions. Reentry occurred as normal.
Mir was a space station that operated in low Earth orbit from 1986 to 2001, operated by the Soviet Union and later by Russia. Mir was the first modular space station and was assembled in orbit from 1986 to 1996. It had a greater mass than any previous spacecraft. At the time it was the largest artificial satellite in orbit, succeeded by the International Space Station (ISS) after Mir's orbit decayed. The station served as a microgravity research laboratory in which crews conducted experiments in biology, human biology, physics, astronomy, meteorology, and spacecraft systems with a goal of developing technologies required for permanent occupation of space.
Soyuz is a series of spacecraft which has been in service since the 1960s, having made more than 140 flights. It was designed for the Soviet space program by the Korolev Design Bureau. The Soyuz succeeded the Voskhod spacecraft and was originally built as part of the Soviet crewed lunar programs. It is launched on a Soyuz rocket from the Baikonur Cosmodrome in Kazakhstan. Between the 2011 retirement of the Space Shuttle and the 2020 demo flight of SpaceX Crew Dragon, the Soyuz served as the only means to ferry crew to or from the International Space Station, for which it remains heavily used. Although China did launch crewed Shenzhou flights during this time, none of them docked with the ISS.
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