一种精确计算破片对空中目标命中点参数的算法

Accurate Algorithm of Calculating The Hitting Point Parameters

为了更加准确和快速地评估战斗部对目标毁伤效果,文中提出了一种考虑破片速度衰减的破片命中空中目标的算法,首先判断破片是否与目标包围盒相交,然后针对与包围盒相交的破片在每个时间步长计算衰减后的实时速度,直至与目标面元相交,并给出了算例。最后,讨论了脱靶量、破片静爆速度、目标速度和导弹速度对破片命中位置偏移的影响。

In order to assess the damage effect of target under the warhead's explosion more accurately and quickly, the algorithm was deduced which considered the velocity fade of fragment. Firstly judge whether intersect the surrounding-box of target by fragment track was proposed, and then calculate the velocity of fragment which intersecting the surrounding-box was used partially traverse the target surface-elements, until the fragment hitting the target. A calculation case was given. Finally, the influence of missile distance, missile velocity, target velocity and the fragment's static explosion velocity to the excursion of hitting point is discussed.