空投鱼雷入水载荷

为了研究空投鱼雷的入水过程，首先分析入水过程中的受力情况进行数值计算；然后使用数值模拟软件Msc.Dytran建立鱼雷入水的有限元模型，计算入水过程中雷体所遭受的冲击压力及其在冲击面上的分布情况，并对不同入水速度和角度下冲击压力峰值、不同头部形状冲击压力峰值特点及鱼雷入水弹道做了分析与讨论，结果表明:鱼雷入水速度和入水角度会对鱼雷壳体所受载荷产生重要影响，研究结果可为预测鱼雷入水冲击载荷提供参考。

Impact force encountered by water-entry airborne torpedo

To investigate the water-entry process of an airborne torpedo, the forces encountered by the water-entry airborne torpedo were analyzed and calculated by using MATLAB.A finite element model for the torpedo entry into water was established by using the finite element code MSC/DYTRAN.Thereby, by considering different water-entry angles and velocities, the impact forces encountered by the water-entry torpedoes were calculated as well as their corresponding pressure at the surfaces of the torpedoes for the torpedoes with different warhead shapes.The effects of water-entry angles, velocities and warhead shapes were analyzed on the maximum force and the peak pressure encountered by the water-entry torpedoes.And the water-entry trajectories of the torpedoes were discussed.The investigated results are helpful for forecasting the impact forces of water entry about the torpedoes.