aerodynamic center

Japanese: aerodynamic center（英語表記）aerodynamiccenter

…The chord that passes through the center of gravity of a wing's planform is called the mean aerodynamic chord (MAC). For wings with an aspect ratio of approximately 4 or more, the aerodynamic center of the wing (the point at which the moment of the resultant aerodynamic forces around a point is constant regardless of the angle of attack) is located about 25% (about 50% at supersonic speeds) from the aerodynamic mean chord. …

*Some of the terminology explanations that mention "aerodynamic center" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…片翼の平面形の重心を通る翼弦を空力平均翼弦mean aerodynamic chord(MAC)という。アスペクト比がほぼ4以上の翼では，翼の空力中心(aerodynamic center。ある点のまわりの空気力の合力によるモーメントが，迎え角に関係なく一定であるような点)は空力平均翼弦の前から約25％(超音速では約50％)のところにある。…

※「aerodynamic center」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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