在无人机机载导弹发射过程的仿真中,导弹喷流的冲击干扰不能忽略。文中采用CFD技术求解导弹发射过程的运动喷流流场,给出察打无人机在导弹发射过程中所承受的实时非稳态干扰气动力数据,建立了包含控制系统的察打无人机导弹发射六自由度非线性仿真系统。对某察打无人机,就机载导弹发射的喷流冲击对无人机平台飞行状态的扰动进行了仿真分析,结果表明该方法正确的反映了喷流的冲击作用,仿真结果更能反映真实情况。

When missile is launched from reconnaissance and precise attack UAV, disturbance of the jet influences on UAV. The influences are extremely complex and important, need simulating and analyzing. CFD was used to solve the flow-field of missile launch, real time unstable state interference aerodynamics of reconnaissance and precise attack UAV can be computed. By using UAV six-DOF simulation system, one certain light-duty reconnaissance and precise attack UAV's missile launch was this paper investigated and analyzed. The jet interference could be included in the simulation system, indicating this method is innovative and functional.