Patent ID: 6691950
Filing Date: 2004-02-17
Classification: G05D

Abstract:
A device for the automatic control of a helicopter comprising a main forward motion and a lift rotor for being controlled at least along a pitching axis, said device comprising:at least one first objective section in respect of the pitching axis which includes a vertical objective algorithm used to automatically determine a control command for operating the tilting of the disk of said main rotor of the helicopter to bring at least one state parameter of the helicopter to an objective which represents a preset value of a state parameter; at least one second objective section in respect of the pitching axis which includes a speed limitation algorithm used to limit the airspeed of the helicopter with respect to at least one limit value; detection means for automatically detecting the reaching by an airspeed corresponding to said limit value; and toggling means for, in order to select one of said first and second objective sections whose control command is used for the pitching axis, automatically toggling from said first objective section to said second objective section, when said detection means detect that the airspeed has reached said limit value.