Abstract:The airborne flight control system, as a core subsystem of civil aircraft, demands strict safety requirements during the development process. It is necessary to satisfy rigorous airworthiness requirements and enhance the system"s dynamic adaptability and operational resilience. The traditional safety method based on accident causation and fault analysis (termed Safety-I) emphasizes fault prevention, yet it has limitations such as insufficient efficiency and flexibility in the development of complex systems. This thesis, targeting the theoretical connotation of Safety-II, analyzes its notion of enhancing safety by understanding and reinforcing the successful operation mechanisms of the system and discusses the applicability of Safety-II in the development of complex airborne systems. With the airborne flight control system as the object, this thesis systematically analyzes the application process of Safety-II in all stages of the entire life cycle, from requirement decomposition to operation and maintenance. Based on the Safety-II theoretical approach, by concentrating on the optimization of normal operating conditions, it analyzes the effects on the efficiency of requirement decomposition, the ability of dynamic design adjustment, the efficiency of test verification, and the airworthiness certification process, and presents case analyses. The research of this thesis offers practical references for improving the development efficiency and safety of the flight control system and lays a foundation for the promotion and application of the Safety-II theory in the aviation manufacturing industry.
