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US 8,757,557 B2Granted
Active gurney flap
AssigneeClaverham Limited
InventorsPaul R. Brewer, Steven Shorcott, Reg R. Raval
Life of this patent
Estimating the term…
Abstract
According to an embodiment disclosed herein, a gurney flap assembly includes an actuator, and a flexible body attaching to the actuator, the body having a downwardly depending flap for moving into and out of an airstream in a pressure side of a wing, wherein the flexible body flexes in reaction to motion of the actuator. This increases the lift force of the rotor blade, wing or aerofoil blade.
Claims24
A gurney flap assembly, said flap assembly comprising:
- an actuator, and
- a flexible body, said body having a downwardly depending flap for moving into and out of an airstream in a pressure side of a wing,
- wherein said flexible body is configured to flex in reaction to motion of said actuator into a deployed position generally flush with a pressure side of a wing.
A gurney flap assembly for a rotary wing aircraft comprising:
- a wing having a pressure side, a suction side, a trailing edge and a hollow portion between said pressure side and said suction side and adjacent said trailing edge of said wing,
- an actuator disposed within said hollow portion of said wing, and
- a flexible body attaching to said actuator, said body having a flap for moving into and out of an airstream in said pressure side, and
- wherein said flexible body flexes in reaction to motion of said actuator into a deployed position generally flush with said pressure side of said wing.
1 more element
A method for controlling performance of a rotary-winged aircraft, said method comprising:
- providing a wing having a pressure side and a suction side, disposing an actuator in said wing,
- flexing a flexible body attaching to said pressure side to move a downwardly depending flap into and out of an airstream in said pressure side of said wing in response to motion of said actuator wherein said flexible body is generally flush with said pressure side of said wing in a deployed position.
Dependencies are inferred from the claim text.