Method and apparatus for deploying an auxiliary lift foil

Details Method and apparatus for deploying an auxiliary lift foil Method and apparatus for deploying an auxiliary lift foil

2011-08-30

2011-08-30

Collins, Timothy D (Department: 3644)

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

Reexamination Certificate

active

08006940

ABSTRACT:
Apparatus connecting an auxiliary lift foil, such as a flap or slat, to a main lift element. The apparatus comprises: a drop link pivotally coupled to the main lift element by a first hinge and to the auxiliary lift foil by a second hinge, wherein the drop link is substantially rigid between the first and second hinges; and a linkage mechanism pivotally coupled to the auxiliary lift foil by a third hinge which is spaced from the second hinge, and to the main lift element by as fourth hinge.The linkage mechanism comprises: a second link pivotally coupled to the airfoil by the third hinge; a third link pivotally coupled to the drop link and/or the auxiliary lift foil by a fifth hinge; and a lever pivotally coupled to the main lift element by a fourth hinge, to the second link by a sixth hinge, and to the third link by a seventh hinge.The drop link is rotated clockwise about the first hinge. In a first phase the auxiliary lift foil is rotated anticlockwise about the second hinge relative to the drop link, and in a second phase it is rotated clockwise about the second hinge relative to the drop link.

REFERENCES:
patent: 4172575 (1979-10-01), Cole
patent: 4784355 (1988-11-01), Brine
patent: 2007/0034748 (2007-02-01), Sakurai et al.
patent: 2009/0134281 (2009-05-01), Engelbrecht et al.
patent: 0 272 396 (1988-06-01), None
patent: 515 029 (2001-05-01), None
Great Britain Search Report dated Aug. 15, 2007.

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