System modeling language (SysML)

a system engineering modeling tool

was employed to model operational scenario of thrust reverser according to SysML

and the case diagram model and sequence diagram model of thrust reverser were developed.Based on operational scenario model

hazard and operability (HAZOP) analysis technology was applied to analyze operational scenario hazards

and hazard conditions of thrust reverser in operation could be achieved by this method.Moreover

the corresponding safety requirements can be derived.The result of SysML-based safety analysis of thrust reverser shows that

integrating SysML and HAZOP is a more effective safety analysis method than traditional system safety analysis.