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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Space elevator construction ： ウィキペディア英語版 Space elevator construction (詳細はasteroid or Near-Earth object.〔D.V. Smitherman (Ed.), (Space Elevators: An Advanced Earth-Space Infrastructure for the New Millennium ), NASA/CP-2000-210429, Marshall Space Flight Center, Huntsville, Alabama, 2000〕〔Hein, A.M., (Producing a Space Elevator Tether Using a NEO: A Preliminary Assessment ), International Astronautical Congress 2012, IAC-2012, Naples, Italy, 2012〕 One early plan involved lifting the entire mass of the elevator into geostationary orbit, and simultaneously lowering one cable downwards towards the Earth's surface while another cable is deployed upwards directly away from the Earth's surface.〔(Pearson, J. (1975). The orbital tower: a spacecraft launcher using the Earth's rotational energy. Acta Astronautica, 2(9), 785-799. )〕 Tidal forces (gravity and centrifugal force) would naturally pull the cables directly towards and directly away from the Earth and keep the elevator balanced around geostationary orbit. As the cable is deployed, Coriolis forces would pull the upper portion of the cable somewhat to the West and the lower portion of the cable somewhat to the East; this effect can be controlled by varying the deployment speed.〔 However, this approach requires lifting hundreds or even thousands of tons on conventional rockets, an expensive proposition. 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「Space elevator construction」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.