液体火箭发动机供给系统耦合燃烧不稳定性研究进展  

Overview of feed system-coupled combustion instabilities in liquid rocket engines

作　　者：万玉 杨东 WAN Yu;YANG Dong(Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen 518055,China)

机构地区：[1]南方科技大学力学与航空航天工程系,广东深圳518055

出　　处：《火箭推进》2025年第1期78-92,共15页Journal of Rocket Propulsion

摘　　要：供给系统耦合燃烧不稳定性是供给系统和燃烧室声学模态发生耦合并加强的结果,是几乎每种型号液体火箭发动机研制过程中都会遇到的最为棘手的问题之一。其所引起的剧烈振动和强化传热会损害敏感制导元件、影响有效载荷、熔化和毁坏火箭发动机系统部件,甚至造成发射失败。对液体火箭发动机供给系统的主要特征、物理机制、研究方法、影响因素以及关键部件动态特性等相关内容的研究现状进行了归纳和梳理。重点关注其发生机制及供给系统关键部件(喷注器和涡轮泵)、关键结构参数和流动参数对系统不稳定性的影响规律。对已取得的研究成果和存在的问题进行了总结,为后续研究和工程治理提供参考。Feed system-coupled combustion instabilities result from the coupling and strengthening between oscillations in the supply system and the acoustic modes of the combustion chamber,which is one of the most challenging problems encountered in the development of almost every liquid rocket engine.The resulting severe vibrations and enhanced heat transfer can damage sensitive guidance elements,affect the effective payload,melt and destroy rocket engine system components,and even cause launch failures.The research progress on main characteristics,influence factors,research methods,dynamic characteristics of key components,and physical mechanisms of feed system-coupled combustion instabilities in liquid rocket engines are summarized.It focuses on the mechanism of the feed system-coupled combustion instabilities and the influence of key components(injectors and turbopumps),critical structural parameters,and flow parameters on the system instabilities.The achievements,existing problems and challenges are summarized.These can provide references for future research and engineering management of feed system-coupled combustion instabilities.

关 键 词：燃烧不稳定性 供给系统 液体火箭发动机 涡轮泵 空化动态特性 

分 类 号：V434[航空宇航科学与技术—航空宇航推进理论与工程]