中文摘要：

针对鸭式布局下的微小型制导弹药,研究了翼展与弹径比值变化下的静稳定性。首先导入制导弹药的几何节点,实现了三维气动外形建模,然后根据不同的飞行条件,进行气动流体力学仿真,最后得到了弹药静稳定性随翼展与弹径比值变化的曲线。其中,选定三种典型方案,获得了随攻角变化的升力系数、阻力系数以及俯仰力矩系数,对比分析了弹药气动特性。结果表明,弹药静稳定性随翼展与弹径比值的增大而降低,在满足设计要求范围内,弹体具有良好的机动性。

英文摘要：

The static stability of a miniature canard-configurated guided ammunition with the variation of the ratio of its wingspan and caliber is studied. The model of the 3-D aerodynamic shape is built by im- porting the geometry nodes of the guided ammuniton, while the static stability curve with the ratio of wingspan and caliber are obtained by pneumatic fluid dynamics simulation under different flight condi- tions. The lift coefficient, resistant coefficient as well as pitching moment coefficient of three typical am- munition design schemes are depicted when angle of attack changes. The results show that stability re- duces with increase of the ratio of wingspan and caliber, and within the scope of meeting the design re- quirements, the projectile has good mobility.