复杂热环境下蓝宝石共形头罩气动热效应研究  

Research on Aerodynamic Heating of Conformal Sapphire Dome in Complicated Thermal Environment

作　　者：肖昊苏[1] 陈澄[1] 姚睿[1] 魏宇飞[1] 张丽琴[1] 

机构地区：[1]北京电子工程总体研究所,北京100854

出　　处：《现代防御技术》2015年第4期13-18,61,共7页Modern Defence Technology

基　　金：青年创新基金(LSQC1201-D)

摘　　要：分析了蓝宝石共形头罩外流场特性,获得了头罩温度、应力、应变和形变场;根据热光效应和弹光效应计算了头罩折射率分布。研究发现复杂热环境下共形头罩驻点处和前方区域气动加热较为严重,热光效应对头罩折射率场改变的影响远比弹光效应大。研究成果对认识共形头罩气动加热的机理以及头罩防热设计具有一定指导意义。The external flow field property of the conformal sapphire dome is analyzed. The temperature, stress and strain fields of the dome are obtained. The refractive index field of the dome is computed based on the theory of thermo-optical and elastic-optical effects. It is found that the aerodynamic heating is more serious at stagnation point and in the front of the dome and that the thermo-optical effect has a much greater influence on the refractive index variation of the dome than the elastic-optical effect. This research might play a guiding role in recognizing the mechanism of aerodynamic heating and the heat protection design of the conformal dome.

关 键 词：气动光学窗口 热辐射 光线追迹 建模研究 

分 类 号：TJ760[兵器科学与技术—武器系统与运用工程]