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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 European Transonic Wind Tunnel ： ウィキペディア英語版 European Transonic Wind Tunnel The European transonic wind tunnel (ETW) is a high-Reynolds-number transonic wind tunnel using nitrogen as test gas. It is one of the world's largest cryogenic wind tunnels. It is situated in Cologne, Germany. ETW was constructed and is operated by the four European countries France, Germany, Great Britain and The Netherlands. The ETW is in operation since 1994.〔(eswirp.eu )〕 ETW provides real-flight Reynolds numbers by virtue of both increased pressure and decreased temperature. Independent variation of Reynolds number and aero elastic loading can be done there. They specialize in Flight Reynolds number testing for full-span and semi-span models at cruise conditions and extreme borders of flight envelope. ==Tunnel parameters== The tunnel parameters are as follows: *Test Section: 2.4 m x 2.0 m ; length 9 m *Mach Number Range: 0.15 - 1.3 *Pressure Range: 1.25 - 4.5 bar *Temperature Range: 110 - 313 K *Max. Reynolds number: 50 million per m Optical access to the test section for various cameras and light sources is provided through 90 special windows in all walls.〔(etw.de )〕 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「European Transonic Wind Tunnel」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.