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超音速导引头整流罩的气动光学效应对红外光电成像系统的跟踪、识别产生很大的影响。结合工程实际,主要开展了在6 km高空、飞行速度达到2.4 Ma的尖晶石整流罩的气动力学、气动光学效应的研究。首先,对设计的尖晶石整流罩进行了流场气动效应的仿真计算分析,并采用电弧风洞模拟试验进行了研究。接着根据试验结果,设计了尖晶石的热冲击试验,通过在尖晶石外表面镀制金刚石保护膜,实现了整流罩的消热设计。采用静态保温加热试验,研究了整流罩的气动加热对导引头跟踪成像的影响。最后,采用火箭橇模拟试验,研究了约2 Ma音速飞行的导引头的跟踪成像。初步分析了气动效应对尖晶石整流罩物理性能以及中波红外成像的影响。
The aerodynamic optical effect of the supersonic seeker fairing has great influence on the tracking and identification of the infrared photoelectric imaging system. According to engineering practice, the aerodynamic and aerodynamic effects of spirel fairing at 6 km altitude and 2.4 Ma speed are studied. First of all, the simulation of the aerodynamic effect of the flow field is carried out on the designed spirel fairing, and the research on the arc wind tunnel simulation is carried out. Then according to the test results, the thermal shock test of spinel was designed. The thermal protection design of the fairing was achieved by plating diamond protective film on the outer surface of the spinel. The effect of aerodynamic heating of the cowl on the tracking imaging of the seeker was studied by using the static insulation heating test. Finally, with the rocket sled simulation experiment, the tracking imaging of the seeker with about 2 Ma speed of sound was studied. The effects of aerodynamic effects on the physical properties of spinel fairing and mid-wave infrared imaging are analyzed preliminarily.