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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 drift meter ： ウィキペディア英語版 drift meter A drift meter, also drift indicator and drift sight, is an optical device used to improve dead reckoning for aircraft navigation. It consists of a small telescope extended vertically through the bottom of the aircraft with the eyepiece inside the fuselage at the navigator's station. A reticle, normally consisting of spaced parallel lines, is rotated until objects on the ground are seen to be moving parallel to the lines. The angle of the reticle then indicates the aircraft's drift angle due to winds aloft, and can be used to calculate the ground speed. ==References== *("B-17 Pilot Training Manual: Duties and Responsibilities of THE NAVIGATOR" ), Headquarters AAF *("Ellis Beymer, B-17 Navigator" ), Combat Aircrews' Preservation Society, 2003 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「drift meter」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.