针对类美国末段高空域防御(Terminal High Altitude Area Defense,THAAD)系统的红外导引头外形,开展了气动光学效应计算分析,并将其用于飞行器设计.利用国家数值风洞工程高速流场计算软件NNW-HyFLOW,考虑热化学非平衡效应和材料传热耦合效应,对导引头典型状态的流场进行了模拟,获得了流场的密度、温度、压力等参数和窗口的温度场参数.基于流场参数,利用HyFLOW气动光学传输效应计算功能,开展了红外光学传输成像计算;利用HyFLOW气动光学辐射效应计算模块,开展了流场和光学窗口的热辐射计算.计算结果表明,类THAAD导引头在30 km以上飞行时,流场和光学窗口基本不会影响目标信号的光学传输成像,但流场和窗口的热辐射效应会对导引头识别目标造成影响.不过随着飞行高度的升高,这种影响会减小.
Research on Aero-Optical Effect Calculation of THAAD-like Seeker
The aerodynamic optical effect is calculated and analyzed for the shape of THAAD-like infrared seeker,and it is used in aircraft design.Considering the thermochemical non-equilibrium effect and the cou-pling effect of material heat transfer,high-speed flow calculation software NNW-HyFLOW is used to simulate the flow field in typical state of the seeker.The flow field parameters such as density,temperature and pres-sure and the temperature field parameters of the window are obtained.Based on the flow field parameters,the infrared optical transmission imaging calculation is carried out by using the aero-optical transmission effect cal-culation function in HyFLOW.The thermal radiation calculation of flow field and optical window is carried out by using the aero-optical radiation effect calculation module.The calculation results show that when the THAAD-like seeker flies above 30 km,the flow field and optical window will not affect the optical transmis-sion imaging of the target signal,but the thermal radiation effect of the flow field and window will affect the target recognition of the seeker.However,when the infrared seeker flies at a high altitude,the influence di-minishes.
NETL
NSTL
万方数据
