Wash-out

Japanese: wash-out(英語表記)washout
Wash-out

…The angle of attack is usually different from the angle of attack because the fuselage is not necessarily parallel to the direction of flight during flight. Wings are usually twisted so that the angle of attack at the tip is a few degrees smaller than at the base, a process called wash-out. Wash-out is used to prevent wingtip stall (when the wing begins to stall at the tip, causing the aircraft to roll suddenly to one side), to reduce induced drag, and to balance the aircraft vertically on tailless aircraft. …

*Some terminology explanations that mention "wash-out" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…飛行中胴体は飛行方向に平行とは限らないので,取付け角と迎え角とはふつう異なる。翼は翼端では取付け角が付け根より数度小さくなるようにねじってあるのがふつうで,これをねじり下げwash‐outという。ねじり下げは翼端失速(翼の失速が翼端のほうから始まることで,これが生ずると機は急に横に傾きやすい)を防いだり,誘導抗力を減らしたり,無尾翼機で縦のつりあいをとるためにつける。…

※「wash-out」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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