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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 Sonar decoy ： ウィキペディア英語版 Sonar decoy A sonar decoy is a device for decoying sonar. Most are released from submarines to act as a false target. == Submarine decoys == The first submarine decoys were the German Bold fitted to U-boats of WWII. These were a pellet of calcium hydride in a simple metal container. On contact with sea water, the calcium hydride decomposed to produce a trail of hydrogen gas bubbles that acted as a bubble curtain and reflected ASDIC impulses to produce a false target. The container trapped hydrogen and floated, with a crude spring valve to maintain buoyancy to keep it at a constant depth. Later decoys, such as Sieglinde, were motorised and could deploy their false target away from the host submarine, increasing safety. 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「Sonar decoy」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.