Requirements for the Hydraulic System of a Flight Control System
The flight control system (FCS) including the related hydraulic system, is of the greatest importance to aircraft performance and reliability. This chapter first introduces development of the aircraft hydraulic systems, followed by a detailed discussion of the interface between flight controls and the hydraulic system. The focus was placed on the flight control surfaces of the Airbus A320 family of aircraft. Afterward, considering that the actuation system is the key element in a FCS, the actuation systems powered by centralized hydraulic power supply and electrical power supply are introduced. The actuation structures in Boeing and Airbus aircraft are compared, and the implementation of actuation systems in a modern commercial aircraft is discussed. Finally, system safety and airworthiness requirements of the FCS to the hydraulic system are introduced.