rotary wing

Japanese: rotary wing(英語表記)rotarywing
rotary wing

…an aircraft that uses rotors, or rotary wings, that rotate about a vertical axis to generate lift to keep the aircraft in the air. In a normal airplane, the wings generate upward lift by moving forward through the air, so flight is impossible without forward motion. …

*Some of the terminology that mentions "rotary wing" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…機体を空中に浮かすための揚力を得るのに,垂直な軸のまわりを回転する回転翼rotor,rotary wingを利用した航空機。ふつうの,飛行機では,翼は,それが空気中を前進することで上向きの揚力を発生するので,前進運動がない限り飛行ができない。…

※「rotary wing」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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