高压高热流光学窗口气膜冷却设计与试验研究  

Design and Experiment Research on the Film Cooling of Optics Window at High Pressure and High Heat Flux

作　　者：姜一通 陈政伟[1] 那伟[1] 张赋 刘峻瑜 JIANG Yitong;CHEN Zhengwei;NA Wei;ZHANG Fu;LIU Junyu(Beijing Institute of Aerospace Long March Vehicle,Beijing,100076)

机构地区：[1]北京航天长征飞行器研究所,北京100076

出　　处：《导弹与航天运载技术（中英文）》2024年第4期101-106,共6页Missiles and Space Vehicles

摘　　要：光学窗口应用面临的环境愈发严苛,特别是极端严酷的气动加热条件将使局部表面温度快速升高,这不但会导致窗口发生碎裂,而且容易引发光学成像装置的饱和/干扰问题,为此通常采用气膜冷却的方式来隔离外流对窗口的直接对流加热。针对高压高热流条件下的光学窗口,设计用于极端压力和热流条件下的切向冷却气膜生成结构及装置,并通过地面试验设计、数值模拟及工程计算,对极端力热环境中影响窗口气膜冷却效能的主要因素开展研究。初步研究结果表明,所提的气膜冷却设计能够可靠降低极端环境下光学窗口表面的气动加热,可满足光学观察环境愈发恶劣的发展要求。The optics window is usually faced with severe aerodynamic heating,and there is a prominent image saturation problem because of high temperature.Therefore,researchers often use film cooling to isolate the direct heat convection from the outflow.A tangential high-density cooling film generation structure is designed which is used for high pressure and heat flux.Through reasonable ground test,numerical simulation and engineering calculation,the main factors affecting the cooling efficiency are studied.The preliminary results show that tangential high density gas film can reliably reduce the surface heat at high pressure and high heat flux.The research effectively adapts to the increasingly harsh optical observation environment.

关 键 词：光学窗口 高压高热流 气膜冷却 主动降热 设计与试验 

分 类 号：V445.1[航空宇航科学与技术—飞行器设计]