超燃冲压发动机热防护技术及点阵结构应用  

Thermal protection technology and lattice structure application of scramjet engine

作　　者：徐熠熠 胡建新 苗训 苏俊 Xu Yiyi;Hu Jianxin;Miao Xun;Su Jun(School of Mechanical Engineering and Mechanics,Xiangtan University,Xiangtan 411100,China)

机构地区：[1]湘潭大学机械工程与力学学院,湘潭411105

出　　处：《空天技术》2024年第4期24-42,共19页Aerospace Technology

基　　金：湘潭大学预研基金项目(KZ08104,高超飞行器镓铟锡发汗冷却研究)。

摘　　要：热防护技术的升级是高超声速飞行器进一步发展的关键之一,当前的热防护技术已经无法满足发动机在更高飞行马赫数下面临的热量过载问题。综述了当前热防护技术的发展现状,对比了其各自的优缺点,提出了在主动冷却技术中引入点阵结构的发展方向,具体阐述了点阵结构的机械性能、制造方法以及点阵结构在强化主动冷却中的优势,进一步分析了将点阵结构投入实际应用所面临的困难与挑战,在理论研究、仿真模拟、实验、制备方法、基体材料和结构优化6个方面进行了点阵结构强化主动冷却技术的发展展望,并就未来研究工作的重点提出了6点建议。The upgrade of thermal protection technology is one of the keys to the further development of hypersonic vehicle, and the current thermal protection technology can not meet the problem of heat overload faced by the engine at higher flight Mach number. The current development status of thermal protection technology and compares their respective advantages and disadvantages are summarized. The development direction of introducing lattice structure into active cooling technology is proposed. It also elaborates the mechanical properties, manufacturing methods and advantages of lattice structure in strengthening active cooling, and the difficulties and challenges faced by this way are further analyzed. The development of lattice structure enhanced active cooling technology is prospected in six aspects: theoretical research, simulation,experiment, manufacturing method, matrix material and structure optimization, and some suggestions for future research are put forward.

关 键 词：超燃冲压发动机 热量过载 热防护技术 主动冷却 点阵结构 

分 类 号：V235.21[航空宇航科学与技术—航空宇航推进理论与工程] V231.1