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Soyuz TMA

Soyuz-TMA
Soyuz TMA-7 spacecraft2edit1.jpg
Manufacturer Korolev
Country of origin  Russia
Operator Russian Federal Space Agency
Applications Carry three cosmonauts to ISS and back
Specifications
Design life Up to six months docked to Space station
Regime Low Earth orbit
Production
Status Retired (replaced by Soyuz TMA-M)
Launched 22
First launch Soyuz TMA-1, 2002
Last launch Soyuz TMA-22, 2012
Related spacecraft
Derived from Soyuz-TM
Derivatives Soyuz TMA-M
Soyuz TMA-M
Soyuz TMA-05M rocket launches from Baikonur 4.jpg
Manufacturer Korolev
Country of origin  Russia
Operator Russian Federal Space Agency
Applications Carry three cosmonauts to ISS and back
Specifications
Design life Up to six months docked to Space station
Regime Low Earth orbit
Production
Status Retired (replaced by Soyuz MS)
Launched 20
First launch Soyuz TMA-01M, 2010
Last launch Soyuz TMA-20M, 2016
Related spacecraft
Derived from Soyuz-TMA
Derivatives Soyuz MS

The Soyuz-TMA is a revision of the Soyuz spacecraft, superseded in 2010 by the Soyuz TMA-M. (T – транспортный – Transportnyi – meaning transport, M – модифицированный – Modifitsirovannyi – meaning modified, A – антропометрический, – Antropometricheskii meaning anthropometric). It is used by the Russian Federal Space Agency for human spaceflight. The spacecraft features several changes to accommodate requirements requested by NASA in order to service the International Space Station, including more latitude in the height and weight of the crew and improved parachute systems. It is also the first expendable vehicle to feature a "glass cockpit". Soyuz-TMA looks identical to the earlier Soyuz-TM spacecraft on the outside, but interior differences allow it to accommodate taller occupants with new adjustable crew couches.

A Soyuz spacecraft consists of three parts (from front to back):

The first two portions are habitable living space. By moving as much as possible into the orbital module, which does not have to be shielded or decelerated during atmospheric re-entry, the Soyuz three-part craft is both larger and lighter than the two-part Apollo spacecraft's command module. The Apollo command module had six cubic meters of living space and a mass of 5000 kg; the three-part Soyuz provided the same crew with nine cubic meters of living space, an airlock, and a service module for the mass of the Apollo capsule alone. This does not consider orbital module that could be used instead of LEM in Apollo.

Soyuz can carry up to three cosmonauts and provide life support for them for about 30 person days. The life support system provides a nitrogen/oxygen atmosphere at sea level partial pressures. The atmosphere is regenerated through KO2 cylinders, which absorb most of the CO2 and water produced by the crew and regenerates the oxygen, and LiOH cylinders which absorb leftover CO2.


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