Flap or wing droop arrangement for an aircraft wing
AssigneeAvions Marcel Dassault-Breguet Aviation
InventorJean Cabriere
Life of this patent
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Abstract
A device for wing droops assembled on the leading edge of an aircraft wing and capable of occupying either a retracted position for flight in the clean configuration or an extended position, projecting before and below the wing, for producing extra lift, comprising a hydraulic valve controlling the supply of hydraulic fluid to jacks which operate the droops, the valve being fitted with a pilot-operated manual control and an automatic control adapted to be actuated by an angle of attack detector of the aircraft.
Claims6
In a device for controlling wing droops assembled on the leading edge of an aircraft wing and capable of occupying either a retracted position for flight in the clean configuration or an extended position projecting before and below the wing for producing extra lift, comprising a plurality of jacks for operating the droops, a hydraulic valve means adapted to regulate the supply of hydraulic fluid to said jacks, and control means for said valve means, the improvement wherein said control means comprises a pilot-operated manual control and an automatic control adapted to be actuated by an angle of attack detector of the aircraft, and said droop comprises two independent sections along its length, both of said two sections being operated simultaneously by said manual control through the simultaneous supplying of their jacks via said valve means, while only the section in each wing which is nearer the wing tip has the jacks therefor operatively connected to valve means by said automatic control.
A device for controlling wing droops assembled on the leading edge of an aircraft wing and capable of occupying either a retracted position for flight in the clean configuration or an extended position projecting before and below the wing for producing extra lift, said wing comprising a wing tip section and a central section, each having a droop associated therewith, said device comprising a source of hydraulic pressure, a hydraulic circuit connecting said source through two distributing members with a plurality of jacks that operate the droops, a pilot-operated manual control for actuating a first one of said distributing members, and an automatic control adapted to be actuated by an angle of attack detector of the aircraft for actuating the second one of said distributing members, said hydraulic circuit being so arranged that the second distributing member controls only the jacks that actuate the droops of the wing tip section.
A device for controlling wing droops assembled on the leading edge of an aircraft wing and capable of occupying either a retracted position for flight in the clean configuration or an extended position, projecting before and below the wing, for producing extra lift, said wing comprising a wing tip section and a central section, each having a droop associated therewith, said device comprising two spool valves, a solenoid valve, a source ofhydraulic pressure, and a hydraulic circuit connecting said source through said spool valves to a plurality of jacks that operate the droops, a pilot-operated manual control for actuating a first one of the spool valves, electrical circuit means including a device sensitive to the angle of attack of the aircraft and operative for actuating said solenoid valve, hydraulic means for controlling the second one of the spool valves by said solenoid valve, the connections of said hydraulic circuit being so arranged that the second spool valve controls the actuation of the droop of the wing tip section when the angle of attack device is operative.
Dependencies are inferred from the claim text.