小口径定距空爆弹末端防空拦截实时模拟及开舱距离研究

The simulation of terminal air defense interception and opening distance of small caliber fixed distance air-burst ammunition cannot reflect the dynamic intersection process of bullet clouds and targets after opening, and ignores the actual fuze starting law, which leads to the inaccurate evaluation of damage effectiveness. In this paper, the real-time simulation of terminal air defense interception of small caliber fixed distance air-burst ammunition and its opening distance are studied. A real-time simulation platform for terminal air defense interception of small caliber fixed distance air-burst ammunition is built by establishing a numerical model of multi-beam directional prefabricated fragment warhead, projectile-target intersection and equivalent target (e. g. cruise missile). Based on the real-time simulation platform, the weapon system errors and the measured fuze starting law are introduced, and the relationships between the opening distance and the damage efficiency of projectile at different shooting distances are analyzed. Finally, the development directions of fuze technology of small caliber fixed distance air-burst ammunition are prospected. The results show that the actual fuze starting law makes the reduction in the optimal damage efficiency increase with the increase in the shooting distance. When shooting a long-range target, there is a high miss rate in the opening distance of 0 -20 m.