Reliability Modeling and Analysis for Space Phased-Mission System

A comprehensive reliability modeling and assessment method based on an event chain is proposed for the characteristics of complex space phased-mission systems, the implementation process of comprehensive reliability modeling is explained in detail, and the identification of weak links and reliability assessment of the EDL process is carried out with the example of the EDL process of the Tianwen-1 Mars Probe. The application results show that the integrated reliability modeling and assessment method based on the event chain has good engineering applicability, and the method can be extended to the reliability modeling and analysis of complex space phased-mission systems.