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

Claim 15:
16. A flight control system (300), comprising:
a flight control surface (20);
an adjacent structure (60) adjacent to the flight control surface (20); and
a rotary hydraulic actuator (90) that is configured to selectively pivot the flight control surface (20) between a stowed position (38) and a deployed position (40);
wherein one of the flight control surface (20) or the adjacent structure (60) comprises at least one magnet (62) and the other of the flight control surface (20) or the adjacent structure (60) comprises at least one ferromagnetic structure (64), and wherein an interaction of a magnetic field of the at least one magnet (62) with the at least one ferromagnetic structure (64) causes a magnetic force (44) that urges the flight control surface (20) toward the stowed position (38); and
wherein the rotary hydraulic actuator (90) comprises a deployed configuration corresponding to the deployed position (40) of the flight control surface (20) and a stowed configuration corresponding to the stowed position (38) of the flight control surface (20), wherein the rotary hydraulic actuator (90) is configured to selectively transition between the stowed configuration and the deployed configuration to pivot the flight control surface (20) between the stowed configuration and the deployed configuration, and wherein the magnetic force (44) operably restricts the rotary hydraulic actuator (90) from transitioning from the stowed configuration towards the deployed configuration as a result of aerodynamic lift force (42) on the flight control surface (20).