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Acta Aeronautica et Astronautica Sinica ›› 2023, Vol. 44 ›› Issue (23): 629016-629016.doi: 10.7527/S1000-6893.2023.29016

• Special Topic: Reusable Launch Vehicle Technology • Previous Articles     Next Articles

Review and prospect of model-based fault diagnosis technology for liquid rocket engines

Zehao CHEN, Hui CHEN(), Yushan GAO, Hang ZHANG   

  1. Xi’an Aerospace Propulsion Institute,Xi’an  710100,China
  • Received:2023-05-18 Revised:2023-06-04 Accepted:2023-07-03 Online:2023-12-15 Published:2023-07-14
  • Contact: Hui CHEN E-mail:chenhui2013abc@163.com
  • Supported by:
    National Science and Technology Major Project

Abstract:

The reusable liquid rocket engine is a key development direction of the future aerospace industry, and fault diagnosis capability is an important guarantee for its safe operation. Due to complex structure and harsh working conditions of the liquid rocket engine, its characteristics of multiple start-ups and wide-range thrust regulation in the reusable scenario, as well as diversity of failure modes, difficulty in fault mechanism analysis and lack of failure data, fault diagnosis research is facing many challenges. The model-based fault diagnosis method can cover failure modes comprehensively, operate with a clear process, and does not rely on fault data and expert knowledge support, exhibiting high engineering application value under current conditions. Therefore, this paper reviews the development and research of this domain in three aspects: model-based fault simulation, analytical model-based and empirical model-based fault diagnosis of liquid rocket engines on the system level. After a summary of its weaknesses and challenges, this paper makes prospect on the development trends of this technology.

Key words: liquid rocket engine, fault diagnosis, fault simulation, analytical model, empirical model

CLC Number: