为了避免弹体非正侵彻时侵彻弹道失稳，提高弹体侵彻深度，通过理论计算和数值仿真分析了柱形弹体和不同半锥角的锥形弹体的侵彻弹道，由于锥形弹体相比于柱形弹体，增大了与弹道洞壁的接触面积，产生的稳定力矩削弱了偏转力矩的不利影响，因而锥形弹体提高了侵彻弹道稳定性，弹道偏移量随着弹体半锥角的增大而减小，且存在一个最优半锥角使得垂直侵深最大。

In order to avoid ballistic instability and increase the penetration depth during the process of non-normal penetration，the penetra tion trajectory of different projectiles’shape was studied by means of theoretical calculation and numerical simulation in this paper． Com pared with projectiles with cylindrical body，projectiles with conical body increase the contact area with the wall of penetration ballistic hole，and stability moment weakens the adverse effect caused by deflection moment． Therefore，projectiles with conical body enhance the penetration ballistic stability． Besides，the offset of penetration ballistic decreases with the increase of conical body’s half-cone angle and there exists an optimal half-cone angle makes vertical penetration depth be the largest．