导航

Acta Aeronautica et Astronautica Sinica ›› 2025, Vol. 46 ›› Issue (8): 31083.doi: 10.7527/S1000-6893.2024.31083

• Reviews •    

Review on analysis and control technology of curing residual stress in solid motor propellants

Baoshi YU1,2, Yongjun LEI1,2,3, Zhibin SHEN1,2, Dapeng ZHANG1,2()   

  1. 1.College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China
    2.Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions,Changsha 410073,China
    3.Rocket Force University of Engineering,Xi’?an 710025,China
  • Received:2024-08-20 Revised:2024-09-18 Accepted:2024-10-14 Online:2024-10-16 Published:2024-10-15
  • Contact: Dapeng ZHANG E-mail:zhangdapeng@nudt.edu.cn
  • Supported by:
    National Natural Science Foundation of China(61671233);Independent Research and Cultivation Project for Young Talents of College of Aerospace Science and Engineering, National University of Defense Technology

Abstract:

A certain residual stress will accumulate during the curing and cooling process of Solid Rocket Motor (SRM) grain, which will affect the structural integrity of the SRM. Therefore, it is of great significance to analyze the Cure-induced Residual Stress (CRS) of the propellant grain and explore effective control methods for ensuring the reliability of space vehicles and the safety of weapons and equipment. In this paper, the research progress on the generation mechanism, release method, detection technique and inversion prediction of the CRS of propellant grain is reviewed. This paper summarizes the current status and shortcomings of the structural integrity research of SRM, considering the CRS of propellant grain, as well as the development of its control methods and engineering applications. Based on the formation causes and release mechanism of the CRS and the release mechanisms in propellant grain structures, corresponding control methods and ideas for engineering application development are proposed. The analysis shows that the co-design method combining curing process control and structural configuration optimization can effectively control the CRS of the propellant grain, and establishing a standard test system is the key to validate the control method.

Key words: solid rocket motor, cure-induced residual stress, structural integrity, mechanical properties testing, process design method

CLC Number: