Quiet landing gear door
AssigneeThe Boeing Company
InventorsRobin B. Langtry, Drew A. Wetzel
Life of this patent
Estimating the term…
Abstract
A quiet landing gear door and methods are presented. A landing gear door comprises a trailing edge and a leading edge and is operable to deploy to a landing gear door deployed position. A door flap comprises the trailing edge and is hinged to the landing gear door. The door flap deflects toward a landing gear strut to a door flap deployed position in response to deployment of the landing gear door. A leading edge section comprises the leading edge and is coupled to the door flap. The leading edge section deflects toward the landing gear strut to a leading edge deployed position in response to deployment of the landing gear door.
Claims20
A quiet landing gear door comprising:
- a landing gear door comprising a trailing edge and a leading edge and operable to deploy to a landing gear door deployed position;
- a door flap comprising the trailing edge and hinged to the landing gear door and the door flap deflects toward a landing gear strut to a door flap deployed position in response to deployment of the landing gear door;
- and
- a leading edge section comprising the leading edge and coupled to landing gear door and the leading edge section deflects toward the landing gear strut to a leading edge section deployed position in response to deployment of the landing gear door.
A method for reducing landing gear noise, the method comprising:
- deploying a landing gear door comprising a trailing edge and a leading edge;
- deflecting toward a strut a leading edge section comprising the leading edge and coupled to the landing gear door;
- deflecting toward the strut a door flap comprising the trailing edge and hinged to the landing gear door;
- and
- reducing a flow velocity on a pressure side of the landing gear door due to deflecting the leading edge section and the door flap.
A method for configuring a quiet landing gear door, the method comprising:
- configuring a landing gear door to deploy to a landing gear deployed position;
- coupling a leading edge section to the landing gear door;
- and
- hinging a door flap to the landing gear door;
- wherein
- the leading edge section and the door flap deflect toward a landing gear strut in the landing gear deployed position to reduce a local flow speed near the landing gear strut and minimize a wake impinging on a pressure side of an aerodynamic surface of an aircraft such that a landing gear noise and a landing gear wake-aerodynamic surface interaction noise are reduced.
Dependencies are inferred from the claim text.