多管带制退器火炮同步发射膛口流场分析

为了研究多管武器同步发射时膛口流场的发展形成过程和弹丸运动过程中的受力,基于二维非定常可压缩流的N-S方程,结合内弹道数据和动网格理论进行数值模拟分析。分析结果展示了单管和3管带制退器火炮膛口流场的形成发展过程,发现3管带制退器火炮膛口流场更加复杂,且整体更加宽大,弹丸进入瓶颈区的时间更长,得出了3发弹丸在运动过程中的径向受力曲线,两侧弹丸受到方向相反大小近似相同的力,中间弹丸几乎不受力。仿真结果为提高多管武器同步发射时的精度提供了一些参考依据。

Flow Field Analysis of Multi-barrel Synchronous Launching Artillery with Muzzle Brake

A study was made of the forces exerted during the movement of projectiles and in the deve-lopment and formation process of the muzzle flow field of multi-barrel weapons during the synchronous launching, with numerical simulation analysis carried out based on the N-S equation of two-dimensional unsteady compressible flow, in combination with the interior trajectory data and the dynamic mesh theory . The anylytical results show the development and formation process of the muzzle flow field of single-and three-barrel artillery with muzzle brake. The anslysis finds that the flow field of three-barrel artillery with brake is more complex, that the whole is wider, and that the time of projectiles moving into the bottleneck area is longer, with the radial force curve of three projectiles during the movement obtained. The two sides of projectiles are subjected to forces of the same magnitude in opposite directions. The middle projectile has almost no force exerted. The simulation results provide some refe- rences for improving the accuracy of multi-barrel weapons during synchronous launching.