26 8 第 卷第 期 esults show that the projectile s tail-slap is accompanied by the increase of axial and lateral ’ loads, and that the change of loads is characterized by non-symmetry. During the relative stable motion stage, by taking the average value of the drag caused by projectile s tail-slap in one cycle, a coefficient represent⁃ ’ ing the tail-slap s effect was obtained, and the underwater ballistic performance of projectile with tail-slaps ’ was analyzed. The results show that the supercavitating projectile artillery weapon is feasible in underwater close-in defense. projectile; water-entry cavity; tail-slap; underwater trajectory Key words: 0 引 言 超空泡射弹的高速入水过程,是其由空中弹道进入水中弹道的一个重要的过渡环节。自弹体接 2022-02-05 收稿日期: 6142203180306 基金项目:水动力学实验室基金项目( ) 作者简介:王晓辉(1988-),男,高级工程师,E-mail: ******@。1112 26 8 船舶力学 第 卷第 期 触自由液面瞬间,到形成超空泡水下航行状态,由于涉及流动介质突变引起的入水冲击,以及入水空 泡发展、包覆状态改变引起的水动力变化,射弹的入水载荷形式较为复杂。 在射弹高速入水载荷研究方面,苏轶龙[1]在考虑水的可压缩性基础上,对射弹垂直入