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缠度与缠角
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缠度与缠角
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rifling angle
缠度与缠角
为了增加弹丸在空气中飞行的稳度,提高射击精度,在枪管内壁设计了与枪管纵轴线呈一定倾斜角度的膛线,赋予弹丸以导转力,使弹丸围绕自己纵向轴心旋转飞行。膛线缠度是膛线的导程与枪管口径的比值,导程又称缠距,是膛线旋转一周沿枪管轴线方向前进的距离。膛线上任意一点的切线与枪管轴线的夹角叫膛线缠角。
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