Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Reexamination Certificate
2011-03-08
2011-03-08
Dinh, Tien (Department: 3644)
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
Reexamination Certificate
active
07900876
ABSTRACT:
Tip feathers, including forward swept tip feathers, and associated aircraft systems and methods are disclosed. A system in accordance with one embodiment includes an aircraft wing having an inboard portion, an outboard portion, and a leading edge having an aft wing sweep angle at the outboard portion. A first feather is fixed relative to, and projects outwardly from, the outboard portion of the wing and has a leading edge with a first, forward sweep angle relative to a pitch axis of the wing. A second feather is fixed relative to, and projects outwardly from, the outboard portion of the wing at least partially aft of the first feather, and has a leading edge with a second, aft sweep angle relative to the pitch axis.
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Dinh Tien
Perkins Coie LLP
The Boeing Company
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