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为了克服炮弹强力入射撞击时的跳弹,介绍一种大口径环形切刃的头部外形,口径大体上接近最大截面尺寸。附图1 表示这种炮弹的纵向剖示图,所谈的这种环形切刃六径为D’_o,D’_o接近D_o。图2是同一炮弹的正视图,图3概略地表示用直径为D_o的炮弹获得的钻孔。已经证实的炮弹的这种不跳弹特性,对贯穿目标不利,这个环形切刃在钻进的时候,比简单的典型尖头(如图中所示2那样的外形)具有更大的阻力。
In order to overcome the bullet when a projectile strongly impinges upon impact, a head profile of a large-diameter annular cutting edge is introduced, and the caliber is substantially close to the maximum cross-sectional size. Figure 1 shows a longitudinal cross-sectional view of such a cannon. The ring cutting edge of this type is referred to as D’_o and D’_o is close to D_o. Figure 2 is a front view of the same shell, and Figure 3 schematically shows the borehole obtained with a projectile of diameter D_o. This non-jumping projectile behavior of projectiles has been found to be detrimental to the perforation of the projectile, which, when drilled, has greater resistance than a simple, typical tip (profile as shown in Figure 2).