摘要
At present,the number,scale and complexity of launch vehicle software systems have increased dramatically.Software is no longer a simple stack of independent configuration items,but a tightly integrated complex distributed software system.How to improve the safety of complex launch vehicle software systems has become a new topic under launch vehicle development.This paper introduces in detail the contents and processes of software system safety analysis based on use case of the Long March 5B launch vehicle with innovations including analysis methods for key sequences,key events,failure modes and countermeasures.
