Patent ID: 11926416
Assignee: THE BOEING COMPANY
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 20:
21. A flight control system (300), comprising:
a flight control surface (20) that includes a first magnetic element (62, 64);
a structure (60) adjacent to the flight control surface (20) and including a second magnetic element (62, 64) that is attracted to the first magnetic element (62, 64) by a magnetic force (44); and
a rotary hydraulic actuator (90) operably linked to and configured to selectively pivot the flight control surface (20) between a stowed position (38) and a deployed position (40);
wherein fluid movement within the rotary hydraulic actuator (90), when the flight control surface (20) experiences an aerodynamic lift force (42), urges the flight control surface (20) in the stowed position (38) toward the deployed position (40) with a reactive force; and
wherein the magnetic force (44) is calibrated to counteract said reactive force.