Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1977-02-28
1978-10-03
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244199, 244130, B64C 2104
Patent
active
041179951
ABSTRACT:
A wing duct near and parallel to the leading edge of an aircraft wing receives air from the jet engines of the craft. The wing duct is spiral-like in cross section with an exit slit for directing high velociy air rearwardly over the dorsal wing surface and toward the trailing edge of the wing. A vertically movable slat matching the contour of the wing adjacent to the duct covers the exit slit leading from the duct when in a lowered position. The slat is raised automatically by the high velocity air stream blasting out of the exit slit and the slat directs this air stream rearwardly and prevents it from flowing forwardly. The slat is attached to the top of a gridwork through which the high velocity air stream from the exit slit must flow and the gridwork, in conjunction with the elevated slat, produces laminar flow of air across the top of the wing and minimizes turbulence. When the slat is retracted to lie flush against the top of the wing, the gridwork enters a wing recess or well immediately rearwardly of the duct. The slat can be retracted by a state of the art hydraulic mechanism in the wing which allows extension of the slat and gridwork responsive to the air stream coming from the exit slit.
REFERENCES:
patent: 2075817 (1937-04-01), Loerke
patent: 2252657 (1941-08-01), Zap
patent: 2841344 (1958-07-01), Stroukoff
patent: 2951662 (1960-09-01), Theodorsen
patent: 2973922 (1961-03-01), Davidson et al.
patent: 3018983 (1962-01-01), Davidson
patent: 3911848 (1975-10-01), Brazier
Anxionnaz et al., U.S. Published Ser. No. 367,666, May 25, 1943.
Barefoot Galen L.
Fishburne, Jr. B. P.
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