高速飞行器主动冷却试验技术研究  

Research on active cooling test technology of high-speed aircraft

作　　者：秦强[1] 张肖肖[1] 成竹[1] QIN Qiang;ZHANG Xiaoxiao;CHENG Zhu(National Key Laboratory of Strength and Structural Integrity,Aircraft Strength Research Institute of China,Xi’an 710065,China)

机构地区：[1]中国飞机强度研究所强度与结构完整性全国重点实验室,西安710065

出　　处：《兵器装备工程学报》2023年第S01期24-28,66,共6页Journal of Ordnance Equipment Engineering

摘　　要：针对高超声速飞行器结构热强度验证中试验对象表面快速降温需求,采用隐式差分格式建立金属薄板结构在主动冷却下的热分析数值模型,计算结果表明强迫对流可以明显提升降温效果,但降温效果呈非线性下降;给出了基于压缩空气/氮气的强迫对流冷却、基于液氮的强迫对流冷却和基于“空气/氮气+水”混合物的喷雾冷却3种方案,搭建了快速降温试验系统,进行了基于室温压缩空气和液氮的强迫对流冷却能力试验,结果表明基于液氮的强迫对流冷却有较高的冷却效能。In order to meet the requirement of rapid surface cooling in hypersonic aircraft thermal-structural verification,the active cooling test method was studied,this paper uses an implicit difference scheme to establish a thermal analysis numerical model of sheet metal structure under active cooling.The results show that forced convection can significantly improve the cooling effect,but the cooling effect has a nonlinear decreasing trend.Three schemes of forced convective cooling based on compressed air/nitrogen,forced convective cooling based on liquid nitrogen and spray cooling based on“air/nitrogen+water”mixture are presented.A rapid cooling experimental system is set up,and a comparative experiment of forced convective cooling capacity based on compressed air and liquid nitrogen at room temperature is carried out.The results show that forced convective cooling based on liquid nitrogen has a higher cooling efficiency.

关 键 词：高超声速飞行器 热强度验证 试验对象 快速降温 

分 类 号：V215.4[航空宇航科学与技术—航空宇航推进理论与工程]