作　　者： ; ; ; ; ;

机构地区： 北京强度环境研究所

出　　处： 《导弹与航天运载技术》 2010年第2期24-30,共7页

摘　　要： 高超声速飞行器面临着极端苛刻的气动加热、噪声、力载荷等复合飞行环境。气动加热会引起材料的物性参数变化,改变结构温度场、热应力分布和动力学特性,导致局部区域出现热噪声疲劳破坏。为快速有效地考核飞行器结构在热、噪声环境中的完整性和耐久性,必须深入开展热噪声试验方法、试验系统和高温测试技术方面的研究工作。概述国外热噪声试验方法的发展历程,对不同时期典型壁板结构热噪声试验结果进行归纳总结,给出了国内热噪声试验研究面临的关键技术难点和研究方向。 Hypersonic vehicle suffers extreme flight environments,which is combined with aeroheating,noise and mechanical loads.Material properties of structure are changed by the high temperature,and the distributions of temperature field,thermal stresses are also affected by the aeroheating environment.Fatigue failure is induced at local regions by the thermal-acoustic load.In order to evaluate the integrity and durability of the aerocraft structure designs,the thermal-acoustic testing methods,testing system and the measuring techniques must be researched widely and deeply.The development of thermal-acoustic testing is reviewed,and many representative results of thermal-acoustic testing at different stages are summarized.Moreover,the key technical problems and research orientation of thermal-acoustic testing in China are given.

关 键 词： 高超声速飞行器 热噪声试验 壁板 声疲劳 高温测试

领　　域： [航空宇航科学与技术] [航空宇航科学技术]