STABILITY AND COMMAND AUGMENTATION SYSTEM FOR AN AIRCRAFT, AND STABILIZATION AND CONTROL METHOD OF AN AIRCRAFT

摘要

A stability and command augmentation system (20) for controlling an aircraft (1), comprising: a first member (19) moveable by a pilot input device (10, 11, 15) to a first position defining a first input (xi); a second member (22) moveable to a second position associated with a second input (xd); and an adder device (21) configured to add the first and second inputs (xi, xd) and supply an output signal (xv) defining a command for an element to be controlled (9, 14) of the aircraft (1); the stability and command augmentation system (20) comprises: a casing (30), a first and a second piston (31, 32) integrally movable with one another inside the casing (30) and operatively connected to the second member (22); and control means (33) configured to exert a first force on the first piston and a second force on the second piston (31, 32); the second force is independent of the first force.