基于气动分离技术的弹丸弹托分离仿真

为了研究气动分离技术使弹丸弹托分离的情况，对其进行了模拟仿真研究。采用气动分离技术使弹丸弹托分离，基于气体动力学与摩擦力学理论，分别建立了弹托绕流模型与弹丸弹托气动分离模型。使用Fluent进行绕流仿真，得到了不同速度下弹托分离前后状态下的阻力系数，再用Simulink对54式12.7mm穿甲燃烧弹的弹丸和弹托进行分离仿真，得到了弹丸弹托分离过程的特征结果。结果表明，利用气动分离技术可以使弹托和弹丸较好地分离。上述研究为弹丸和弹托的研发、使用提供了有益的参考。

Research on Simulation of Projectile and Sabot Separation Based on Pneumatic Separation Technology

In order to study the separation of projectile and sabot by the pneumatic separation technology, a simulation study is conducted. Based on gas dynamics and friction mechanics theory, the sabot cartridge flow model and pneuma-tic separation model of projectile and sabot are built. A flow simulation is conducted through Fluent, and the resistance coefficient of pre-separation and post-separation in different velocity is determined. The separation simulation of projectile and sabot of 54 type and 12.7mm armor-piercing is performed through Simulink software, and the character point of the separation process of projectile and sabot is obtained. The simulation results show that the pneumatic separation technology can perfectly make the projectile and the sabot separated. The studies above provide an useful reference for the development and application of projectiles and sabot.