基于改进模型的察/打无人机武器分离仿真

Simulation of R/S UAV-Weapon Separation Based on Improved Methods

对无人机投放航空炸弹过程中载机、航弹间的气动干扰特性和航弹运动规律进行了数值仿真研究。为得到更加精确地结果,对现有仿真模型进行了改进:考虑了动力学模型中无人机平台在投放过程飞行姿态变化项的影响。应用此方法模拟了典型状态下基于察/打一体无人机平台的武器投放过程,以获得该过程中更为准确的无人机/航弹运动速度、姿态轨迹,及气动力等信息。算例表明基于改进模型得到的载机、导弹之间的气动干扰和其姿态等结果更加精确。

We simulated the UAV-weapon separation process with the improved computational fluid dynamics meth- od which comprehensively considered the flying status of both UAV and released weapon. In order to study the aero- dynamic interference and the rules of weapon movement more accurately, dynamic grid approach was used coupled with an unsteady Euler flow solver. 6-DOF models of both UAV and weapon were fully integrated into the CFD solu- tion procedure to determine the body dynamics. And we presented the simulation results of a weapon launching process using developed numerical methods. Major trends of the separation were captured. The computation results and their analysis showed preliminarily the accuracy of the improved method.