为了研究BAT子弹药的气动特性,利用Flunet软件进行了飞行模拟,得到了不同攻角和马赫数条件下的力和力矩系数以及弹体表面压力分布情况,用Matlab对得到数据进行拟合,得到了各系数与攻角和马赫数的数学关系式,结果表明:力系数和力矩系数与马赫数之间存在着一定的指数关系,这种数学关系可以作为计算BAT子弹药气动参数的一种简便算法。仿真结果为进一步的弹道特性研究以及控制系统的分析设计提供一定的参考。

In order to study the aerodynamic characteristics of BAT submunition, the software Flunet was used to simulate the air flying of BAT submunition, the force and moment coefficients as well as surface pressure of the body in different mach number and attack anger were gained. The data were fit in order to gain the mathematical relationship using Matlab. The results show that there are certain exponential relationships between the two types of coefficient and Mach number, and these mathematical relationships could be seen as a simple algorithm to calculate the aerodynamic parameters of BAT submunition. The results of simulation provide a reference for further study on ballistic characteristics as well as the analysis and design of the control system.