Methods and apparatus to control a gap between movable aircraft wing components

• US 9,688,384 B1
• Filed: 09/20/2012
• Issued: 06/27/2017
• Est. Priority Date: 09/20/2012
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Balzer, Michael A., Kordel, Jan A.
• Primary Examiner(s): Dinh, Tien
• Assistant Examiner(s): Hawk, Steven
• Application Number:
  US13/623,597
• Time in Patent Office: 1,741 Days
• Field of Search: 244211, 244212, 244213, 244214, 244215, 244130, 244131, 244133
• CPC Class Codes: B64C 3/50 by leading or trailing edge flaps
• CPC Class Codes: B64C 7/00 Structures or fairings not otherwise provided for
• CPC Class Codes: B64C 9/02 Mounting or supporting thereof
• CPC Class Codes: B64C 9/12 surfaces of different type or function being simultaneously adjusted
• CPC Class Codes: B64C 9/16 at the rear of the wing

Abstract

Methods and apparatus to control a gap between movable aircraft wing components are disclosed. An example apparatus includes a body having a trailing edge and a leading edge. The leading edge is to be coupled to an aircraft wing. The trailing edge is to engage a flap of the aircraft wing. The body includes a structure located between the trailing edge and the leading edge. The structure is to engage the flap to maintain a distance between the body and the flap.

Claims

1. An apparatus, comprising:

a spoiler including;

a trailing edge;

a leading edge, the leading edge to be coupled to an aircraft wing, the spoiler having a tapered portion and a flexible tip, the tapered portion including the leading edge, the flexible tip including the trailing edge, the trailing edge to engage a flap of the aircraft wing; and

a structure located between the trailing edge and the leading edge, an end of the structure being closer to an intersection between the tapered portion and the flexible tip than to the trailing edge, when the structure engages a first portion of the flap, the structure maintains a distance between the spoiler and the flap to enable the trailing edge to engage a second portion of the flap, the structure ending adjacent the intersection between the tapered portion and the flexible tip to enable the engagement between the trailing edge and the second portion to elastically deform the trailing edge to change a camber of the aircraft wing, the engagement between the structure and the flap to enable a reduced contact force seal between the trailing edge and the second portion.

2. The apparatus of claim 1, wherein the structure is a rub block.

3. The apparatus of claim 1, wherein the structure is to span substantially a majority of the spoiler.

4. The apparatus of claim 1, wherein an interaction between the spoiler and the flap is to enable smoother airflow over the aircraft wing.

5. The apparatus of claim 1, further including one or more wear strips coupled adjacent the trailing edge, the one or more wear strips to engage the flap, the one or more wear strips spaced from the structure.

6. The apparatus of claim 1, wherein the structure includes a shape to enable smoother airflow between the spoiler and the flap.

7. The apparatus of claim 1, wherein the structure includes a contour to enable the flap to engage and move the spoiler, via the structure, in a failure condition without plastically deforming the spoiler.

8. The apparatus of claim 1, wherein the structure is to maintain the distance between the spoiler and the flap in a cruise configuration.

9. The apparatus of claim 1, wherein the spoiler is a drooping spoiler.

10. The apparatus of claim 1, wherein the structure includes a first surface, a second surface, and a third surface, the first surface being closest to the leading edge, the third surface being closest to the trailing edge, the second surface disposed between the first surface and the third surface, the first, second, and third surfaces being out of coplanar alignment, the second surface to engage the flap in a first position of the flap or the spoiler, the third surface to engage the flap in a second position of the flap or the spoiler.

11. The apparatus of claim 1, wherein the structure is a solid structure.

12. The apparatus of claim 1, wherein the structure is coupled to an underside of the spoiler, the spoiler extending to the trailing edge, the spoiler being different than the structure, a wear pad being coupled to the spoiler at the trailing edge, the wear pad being spaced from the structure.

13. The apparatus of claim 1, wherein the flexible tip is sized to enable the flexible tip to flex when the trailing edge engages the second portion of the flap.

14. The apparatus of claim 13, wherein the flexible tip includes four plies.

15. The apparatus of claim 1, wherein the flexible tip extends past the tapered portion to the trailing edge, the structure attached to an underside of the spoiler such that an end of the structure is at an end of the tapered portion.

16. An apparatus, comprising:

a spoiler for use with an aircraft, the spoiler including a tapered portion and a flexible tip, the tapered portion including a leading edge, the flexible tip including a trailing edge;

a flap for use with the aircraft, the trailing edge of the spoiler to engage the flap; and

means for maintaining a gap between the spoiler and the flap, when the means for maintaining the gap engages a first portion of the flap, the means for maintaining the gap enables the trailing edge to engage a second portion of the flap, an end of the means for maintaining the gap being closer to an intersection between the tapered portion and the flexible tip than to the trailing edge, the means for maintaining the gap ending adjacent the intersection between the tapered portion and the flexible tip to enable the engagement between the trailing edge and the second portion to elastically deform the trailing edge to change a camber of a wing of the aircraft, the means for maintaining the gap to enable a reduced contact force seal between the trailing edge and the flap.

17. The apparatus of claim 16, wherein the means for maintaining the gap includes a structure located between the trailing edge and the leading edge of the spoiler, the structure to engage the flap, the structure being coupled to an underside of the spoiler, the structure to engage the first portion of the flap to maintain a distance between the spoiler and the flap, the trailing edge to engage the second portion of the flap, the engagement between the structure and the flap to enable the reduced contact force seal between the trailing edge and the second portion.

18. The apparatus of claim 17, wherein the structure is to span substantially a majority of the spoiler.

19. The apparatus of claim 17, wherein the structure includes a shape to enable smoother airflow between the spoiler and the flap.

20. A method, comprising:

directing a spoiler of an aircraft to a location, the spoiler including a tapered portion and a flexible tip, the tapered portion including a leading edge, the flexible tip including a trailing edge;

enabling a first surface of a structure on an underside of the spoiler to engage a first portion of a flap in a first position of the spoiler or the flap, the structure spaced from the trailing edge of the spoiler; and

enabling a second surface of the structure to engage the first portion of the flap in a second position of the spoiler or the flap, the first position associated with a normal operation of the aircraft or a cruise position, the second position associated with spoiler hardover, a failure condition, or flap backdrive, when the structure engages the first portion of the flap, the structure maintains a distance between the spoiler and the flap to enable the trailing edge of the spoiler to engage a second portion of the flap, the structure ending adjacent an intersection between the tapered portion and the flexible tip to enable the engagement between the trailing edge and the second portion to elastically deform the trailing edge to change a camber of an aircraft wing, the engagement between the structure and the flap to minimize a load applied to the trailing edge of the spoiler.