Research on Safety Requirements Allocation of Key Interfaces of Civil Aircraft FBW Flight Control System

With the development of highly comprehensive and integrated technology of civil aircraft system, the complexity of civil aircraft fly-by-wire (FBW) flight control system (hereinafter referred to as the flight control system) is becoming higher and higher, and the design and development of the system is also becoming more and more complicated. As an important system of civil aircraft, the flight control system includes many on-board interface systems, which makes the system design more difficult. In order to ensure the completeness and correctness of the requirements capture in the system design process, it is necessary to study the requirements distribution of the flight control system. In this paper, the distribution of safety requirements of key interfaces of the flight control system is studied, which can be used to support the distribution of safety requirements of flight control system interfaces.