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来自维基百科,自由的百科全书
机翼的上表面与下表面距离之间一半的点连线称为中弧线(mean camber line)或弧线(camber line)。而弧度(camber,又称弯度),是弧线与翼弦线间最大的距离。弧度由翼弦量起,往上为正,往下为负[1][2]。正的弧度在机翼攻角为零度时会提供正的升力,反之则提供负升力。
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