Research on FMEA Application in Assembly Process of Complex Space Probes

Abstract

The process of developing new spacecraft is time-consuming and task-intensive. This paper analyses various problems existing in the application of spacecraft FMEA, and points out that it is necessary to it is necessary to assure the validity of FMEA work, including normative FMEA work carried out in time, comprehensive identification of failure modes and their causes, correct expression of failure modes and their causes and effects, and the pertinence and maneuverability of measures to be taken. Taking the development of Mars rover as an example and considering the actual situation, the assembly process and FMEA agreement are proposed and formulated. According to the development process, the failure modes, causes and effects (severity) of the main processes are analyzed. The risk sequence number (RPN) is obtained by combining the frequency of occurrence and the difficulty of detection. Finally, through sorting out the assembly work and key points in each stage of AIT, 60 processes and 95 failure modes are analyzed, the possible weaknesses are found out, and the control methods and measures are put forward, so that the RPN values are below 12. Improve the quality and efficiency of product development by strengthening FMEA management, and ensure the smooth development of Mars probe on.