Abstract: The history of regenerative cooling technology used for hypersonic propulsion and its basic characters were briefly introduced. According to the basic characters of hypersonic propulsion， main paradoxes and difficulties in developing the regenerative cooling technology were analyzed from different aspects. And on the basis of the analysis， the detailed review of the studies on solving the problems of the lacking cooling capacity of fuel， non-uniform distribution of heat load and coolant flow， dynamics of the coolant flow in the cooling channel was carried out， including how to improve the cooling capacity， figuring out the mechanism of supercritical cooling flow with cracking reaction， heat transfer enhancement and the dynamic heat transfer mechanism. At the end， the authors gave their opinions on the further development of regenerative cooling technology for hypersonic propulsion， thinking that deeper studies based on the multi-discipline research and current studies such as high heat sink fuel technology， combined cooling technology will be the best way.

Key words: Regenerative cooling；Hypersonic propulsion；Insufficient cooling capacity；Chemical reacting flow；Cooling capacity improvement；Review

摘要： 简要回顾了高超声速推进再生冷却的发展历程，介绍了高超声速推进再生冷却的基本特点。根据高超声速推进本身特点，从不同层面分析了高超声速推进再生冷却所面临的主要矛盾和难点。在此基础上，就高超声速推进再生冷却系统冷源不足、冷源及热载荷分布不均、系统动态特性复杂等问题的研究进展进行了详细的综述，包括热沉提升技术、超临界化学反应流动换热特性、强化换热技术以及再生冷却动态特性等方面的研究进展以及亟待解决的主要科学和技术问题。基于此，对目前高超声速推进再生冷却未来的发展进行了展望，认为高热沉燃料技术以及组合冷却技术等现有冷却技术的深化研究以及与其它领域技术的结合，是今后高超声速推进再生冷却的发展方向。

关键词: 再生冷却；高超声速推进；冷源不足；化学反应流动；热沉提升；综述