Systems Engineering and Electronics ›› 2019, Vol. 41 ›› Issue (9): 2141-2147.doi: 10.3969/j.issn.1001-506X.2019.09.30

Previous Articles     Next Articles

PRA based reliability analysis of complex space phased-mission system

LI Xiaopeng1,2, HUANG Hongzhong1, LI Fuqiu2   

  1. 1. School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China; 2. China Academy of Aerospace Standardization and Product Assurance, Beijing 100071, China
  • Online:2019-08-27 Published:2019-08-20

Abstract:

Based on the analysis of the characteristics and the main problems of reliability analysis technologies in the space phased-mission system, the probabilistic risk assessment (PRA) technology is briefly introduced. The integrated modeling, analysis and evaluation, and result analysis processes of PRA are described in detail.Taking the moving subsystem of a lunar probe as an example, the engineering application of PRA technology is carried out. The application results show that the PRA technology has good engineering applicability. The reliability analysis results of the mission can be obtained at the same time, and the weaknesses of the system reliability can be determined by the ranking of risk importance, which can support the engineering design improvement.

Key words: probabilistic risk assessment (PRA), space phased-mission system, reliability analysis, synthetical modeling, uncertainty analysis

[an error occurred while processing this directive]