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''Pirs'' ((ロシア語:Пирс), meaning "pier") -- also called "Stykovochny Otsek 1" or "SO-1" ((ロシア語:Стыковочный отсек), "docking module", or DC-1 (docking compartment) -- is one of the two Russian docking compartments originally planned for the ISS. ''Pirs'' was launched in August 2001. It provides the ISS with one docking port for Soyuz and Progress spacecraft, and allows egress and ingress for spacewalks by cosmonauts using Russian Orlan space suits. A second docking compartment, "Stykovochniy Otsek 2" or SO-2, was initially planned with the same design. However, when the Russian segment of the ISS was redesigned in 2001, the new design no longer included the SO-2, and its construction was canceled.〔(【引用サイトリンク】 Docking Compartment of the Russian segment of the ISS )〕 After another change of plans the SO-2 module finally evolved into the ''Poisk'' module, which was added to the ISS in 2009. ''Pirs'' is scheduled to be detached from the ISS in 2017 and to be deorbited, to make room for the Russian Multipurpose Laboratory Module ''Nauka''. == Design and construction == The Docking Compartment has two primary functions: Provide a docking port and serve as an airlock. The docking port can accommodate one Soyuz-TMA or one Progress-M spacecraft. Visiting spacecraft can deliver people and cargo to and from to the space station. In addition, the Docking Compartment can transport fuel from the fuel tanks of a docked Progress resupply vehicle to either the Zvezda Service Module Integrated Propulsion System or the Zarya Functional Cargo Block. It can also transfer propellant from ''Zvezda'' and ''Zarya'' to the propulsion system of docked vehicles—Soyuz and Progress. The two airlocks are used for spacewalks by cosmonauts wearing Russian Orlan-M spacesuits. The ''Pirs'' docking compartment was manufactured by RKK Energia. The Docking Compartment is similar to the Mir Docking Module used on the Mir space station. The docking compartment's planned lifetime as part of the station was five years. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pirs (ISS module)」の詳細全文を読む スポンサード リンク
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