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Soyuz MS-14 Assembly

20 Aug 2019, 13:00 UTC
Soyuz MS-14 Assembly
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Wikipedia dicit:
A Soyuz spacecraft consists of three parts (from front to back): a spheroid orbital module, which provides accommodation for the crew during their mission; a small aerodynamic reentry module, which returns the crew to Earth; a cylindrical service module with solar panels attached, which contains the instruments and engines.
The orbital and service modules are single-use and are destroyed upon reentry in the atmosphere. Though this might seem wasteful, it reduces the amount of heat shielding required for reentry, saving mass compared to designs containing all of the living space and life support in a single capsule. This allows smaller rockets to launch the spacecraft or can be used to increase the habitable space available to the crew (6.2 m3 or 220 cu ft in Apollo CM vs 7.5 m3 or 260 cu ft in Soyuz) in the mass budget. The orbital and reentry portions are habitable living space, with the service module containing the fuel, main engines and instrumentation.
Soyuz can carry up to three crew members and provide life support for about 30 person days. The life support system provides a nitrogen/oxygen atmosphere at sea level partial pressures. The atmosphere is regenerated through ...

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