Variable camber airfoil

Details Variable camber airfoil Variable camber airfoil

1998-06-30

2000-04-04

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

B64C 344

Patent

active

060450967

ABSTRACT:
A variable camber airfoil has a leading portion and a trailing portion that is pivotally coupled to the trailing portion. A flexible skin substantially encloses the leading portion and the trailing portion and generally defines an airfoil profile. The skin is fixedly coupled to the trailing portion and is slidably coupled to the leading portion. Upon movement of the tail portion, the skin changes position with respect to the leading portion, and the internal structure of the wing changes the profile of the wing. The internal support structure of the wing supports a pivot bar that extends from the leading portion to the trailing portion. The pivot bar is pivotally connected to the support structure. One end of the pivot bar is coupled to the trailing portion, and the other end of the pivot bar is coupled to a movement linkage. The operator controls are ultimately coupled to the pivot bar. A plurality of support arms are coupled between the skin and the support structure. The support arms position the skin with respect to the support structure. When increased lift is desired, the tail pivots downward and the skin slides about the nose so that the upper portion of the skin extends further from support structure and lower portion of the skin is brought closer to support structure. The opposite is true for a reduction in lift.

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