中文摘要：

弹丸在飞行过程中受到空气动力的作用,空气动力的系数也难以确定,这造成弹丸运动方程非常复杂。从空气动力对弹丸的作用效果出发来分析空气动力的变化,然后根据弹丸在飞行过程中受到的空气动力提出了一种简化的弹道方程模型,并通过对某射表的分析计算验证其有效性。

英文摘要：

There are influences coming form air dynamics in the process of projectile＇s flying.The motion equation of projectile is very complicated which is caused by the uncertain air dynamics＇ coefficients.As a result,this article puts forward a simplified model of trajectory equation through the following processes.Firstly,the air dynamics＇ variance is analyzed by the effect of air dynamics to projectile;secondly,the influences of air dynamics is researched to projectile in the process of flying.To demonstrate the effectiveness of the proposed model,it takes some type high artillery fire for an example to carry out simulation calculation.