鸭舵式迫击炮弹气动特性研究

Research on Aerodynamic Characteristics of Canard Mortar

可动双翼鸭舵式新型迫击炮弹的气动布局区别于传统固定鸭舵式修正迫弹,表现出不同的气动特性。基于计算流体动力学方法,采用气动分析软件对某新型迫弹进行气动仿真计算,获得不同条件下弹丸的阻力系数、升力系数和俯仰力矩系数变化规律及舵翼的受力情况。数值模拟结果表明:弹丸的阻力系数、升力系数和俯仰力矩系数随攻角和马赫数的增加而增大;舵翼力随舵偏角和马赫数的增加而增大;双翼鸭舵式迫弹整体气动特性良好。计算结果对可动舵翼修正弹的研究及设计具有一定的参考价值。

The aerodynamic layout of the new type of movable double-wing canard mortar is different from that of the traditional fixed canard mortar, showing different aerodynamic characteristics.In this paper, aerodynamic analysis software based on computational fluid dynamics is used to carry out aerodynamic simulation of a new type of mortar.Numerical simulation results are calculated in the table, and different results are obtained: the drag coefficient, lift coefficient and pitch moment coefficient of the projectile increase with the increase of attack angle and Mach number;rudder wing force increases with the increase of rudder deflection angle and Mach number.The overall aerodynamic characteristics of the double-wing canard mortar are good.The calculation results have certain reference value for the research and design of the movable rudder wing correction projectile.