A review on key structural dynamics problems of liquid rocket main engines

被引：0
作者：
Du D. [1 ]
Li B. [2 ]
机构：
[1] Science and Technology on Liquid Rocket Engine Laboratory, Xi’an Aerospace Propulsion Institute, Xi’an
[2] Academy of Aerospace Propulsion Technology, Xi’an
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2024年 / 45卷 / 02期
关键词：
Dynamics; Launch vehicle; Liquid rocket engine （LRE）; Review; Vibration;
D O I：
10.13675/j.cnki.tjjs.2212047
中图分类号：
学科分类号：
摘要：
As the main power units of launch vehicles，the liquid rocket main engines suffer from extremely serious structural dynamic problems due to the complexity of their structures and the extreme harshness of the service environment. The dynamic problems have become one of the bottlenecks in the process of liquid rocket engine development. Therefore，in order to improve the vibration dynamic environment of launch vehicle and engine，and improve the dynamic strength reliability and work safety of engine，it is necessary to pay sufficient attention to the structural dynamics of engine，which is considered as the‘heart’of launch vehicle. In this paper，based on a detailed introduction to the structural characteristics of engine，the load characteristics of working environment and the structural fault statistics，the main failure modes of the turbo-pump system，thrust chambers，automatons，pipelines and the whole engine were analyzed intensively. Moreover，the key dynamic problems of each component and the whole engine were sorted out，and some suggestions for follow-up research were proposed. © 2024 Journal of Propulsion Technology. All rights reserved.
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