二维弹道修正弹修正机构气动特性研究

二维弹道修正弹气动力特性的研究是求解二维弹道修正弹弹道、分析二维弹道修正弹飞行稳定的基础,是实现精准控制、减小散布必要的理论支撑.该文对二维弹道修正弹的力学特性进行了分析,采用弹翼组合体气动特性工程计算方法,建立二维弹道修正弹气动计算模型,对二维弹道修正弹的升力和阻力进行计算.计算结果与CFD仿真结果对比,误差均小于1...

Research on Aerodynamic Characteristics of Correction Mechanism of Two-dimensional Trajectory Correction Projectile

The research on the aerodynamic characteristics of the two-dimensional trajectory correction projectile is the foundation of solving the trajectory of the two-dimensional trajectory correction projectile and analyzing the flight stability of the two-dimensional trajectory correction projectile,and it is the theoretical support to achieve precise control and reduce dispersion. The mechanical characteristics of two-dimensional trajectory correction projectile were analyzed,and the engineering calculation method of the aerodynamic characteristics of the wing assembly was adopted. The aerodynamic calculation model of two-dimensional trajectory correction projectile was established,and the lift force and drag force of two-dimensional trajectory correction projectile were calculated. Comparing the calculated results with the CFD simulation results,the error is less than 10%,and the model has good reliability. Combined with aerodynamic calculation model of two-dimensional trajectory correction projectile,the influence of rudder deflection angle and roll angle on the lift-drag ratio of two-dimensional trajectory correction projectile was analyzed by using genetic algorithm. The results show that the smaller the rudder deflection angle,the greater the optimal lift-to-drag ratio of the whole projectile,the greater the optimal angle of attack,and the better the aerodynamic capability. When the angle of attack is greater than 10° and the roll angle is 180°,the full projectile has better aerodynamic capabilities.