导航

Acta Aeronautica et Astronautica Sinica ›› 2024, Vol. 45 ›› Issue (11): 529065-529065.doi: 10.7527/S1000-6893.2023.29065

• Reviews • Previous Articles    

Research progress on structural strength of liquid rocket engine during engineering development phase

Penggang MU(), Binchao LI, Jun WANG, Shaowei SONG, Hanyang SHI   

  1. Science and Technology on Liquid Rocket Engine Laboratory,Xi’an Aerospace Propulsion Institute,Xi’an 710100,China
  • Received:2023-05-29 Revised:2023-07-25 Accepted:2023-09-05 Online:2023-10-11 Published:2023-10-08
  • Contact: Penggang MU E-mail:mu_penggang@163.com
  • Supported by:
    National Natural Science Foundation of China(11702204);Foundation of Science and Technology on Liquid Rocket Engine Laboratory(HTKJ2022KL011004)

Abstract:

Liquid rocket engines are used as the main propulsion system for Chinese space transportation, which offer the most spacecraft launch for space activities. During the rigorous working conditions, such as high pressure, high temperature, high rotational speed and strong vibration environment, structural strength of engine and its components have become momentous technical problems to be solved in the engine development process. Structural strength problems began with the preliminary design stage of project operated throughout the product full life cycle and ended with completing the launch missions. However, many uncertainties and profound problems, including structural design, loads and serving environments, materials, manufacturing process, test measure, destructive evaluation, test verification process and strength assessment, caused the structural strength to become an important factor that affected the safety and reliability of engine. Therefore, taking the structural strength as fundamental starting point, the aforementioned essential problems and elements in structural strength design, test verification process of liquid rocket engines were summarized and analyzed, and research ideas for structure strength design system exploration and the new engine pre-research were proposed and discussed in this paper.

Key words: liquid rocket engine, structural strength, engineering development, load, verification, assessment

CLC Number: