Flight control system and aircraft comprising it

Abstract

A flight control system for an aircraft, in which control commands are transmitted between a flight control module and at least one actuator of a movable flight surface, the flight control module including at least one first and one second computer, each computer being adapted for computing, for each actuator, a control command established according to at least one predetermined law for control of the flight surface controlled by the actuator. Each actuator including at least two logic units adapted for receiving commands originating from all the computers, each logic unit being adapted for: comparing the commands received between them, and according to the result of the comparison, choosing in accordance with a predetermined logic common to all the actuators, a computer, referred to as master computer, whose control command is validated for execution by the actuator considered; and transmitting, to all the computers, a master computer choice information item; and in that each computer is adapted for self-determining as being a master computer or otherwise as being a computer referred to as slave, on the basis of master computer choice information items received from all the actuators, a sole master computer among all the computers finally being determined.