METHOD FOR CONTROLLING A MAIN ROTOR OF GIRAVION, ASSOCIATED CONTROL SYSTEM AND GIRAVION EQUIPPED WITH SUCH A CONTROL SYSTEM

摘要

The present invention relates to a control system (1) of a main rotor (11) of a rotorcraft (10) for performing an autorotation flight phase of said rotorcraft (10), said control system (1) comprising: • an organ controlling (2) the collective pitch of the blades (13) of said main rotor (11), said control member (2) being movable over an amplitude of positions between two extreme physical stops, • a calculation unit (3) for calculating a collective blade angle, called "collective pitch of autorotation", of the blades (13) of said main rotor (11), said "collective pitch of autorotation" allowing said main rotor (11) to rotate at a rotational speed optimal for said phase of flight autorotating said rotorcraft (10), and • motorized means (4) for slaving said control member (2) in position in a predetermined position, called "autorotation position", in which said member command (2) generates a command setpoint p to enslave a common collective pitch of the blades (13) of said main rotor (11) to said "collective pitch of autorotation".