Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1987-12-22
1989-05-16
Barefoot, Galen
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244199, 244130, 416236A, 114103, B64C 310
Patent
active
048303151
ABSTRACT:
An airfoil-shaped body has a relatively thin trailing edge with a series of alternating, adjoining, downstream extending troughs and ridges in its suction surface which form wave-like surface undulations terminating at the trailing edge. The ridges in the suction surface form corresponding troughs in the pressure surface near the trailing edge; and the troughs in the suction surface form corresponding ridges near the trailing edge of the pressure surface. The resulting airfoil-shaped body has a trailing edge with a wave-like shape. The trough and ridge construction delays or prevents two-dimensional boundary layer separation without creating an undesirable drag penalty.
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Paterson Robert W.
Presz, Jr. Walter M.
Werle Michael J.
Barefoot Galen
Revis Stephen E.
United Technologies Corporation
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