Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1979-12-26
1983-05-10
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244208, B64C 2300, B64C 2102
Patent
active
043825699
ABSTRACT:
A capture device at the tip of a fluid foil such that when the foil has relative motion with respect to fluid in which it is immersed the capture device intercepts a quantity of the crossflow which is generated by the difference in pressure on the lower surface relative to the upper surface so that lift-induced drag is reduced thereby. The capture device comprises a curved plate having its concave side facing inward toward the foil center span to form an inlet, and an aspirating device for venting off the lower surface crossflow inducted by the capture device. Conventional pumping can be used to aspirate the capture device or a winglet having a passage connecting the capture inlet with a slot opening on a low pressure region of the winglet can be utilized for the purpose.
REFERENCES:
patent: 2075817 (1937-04-01), Loerke
patent: 2453721 (1948-11-01), Mercier
patent: 2751168 (1956-06-01), Stalker
patent: 2833492 (1958-05-01), Fowler
patent: 2867392 (1959-01-01), Lear
patent: 2894703 (1959-07-01), Hazen et al.
patent: 3000401 (1961-09-01), Ringleb
patent: 3149804 (1964-09-01), Litz, Jr.
patent: 3149805 (1964-09-01), Frey et al.
patent: 3411738 (1968-11-01), Sargent
patent: 3596854 (1971-08-01), Haney, Jr.
patent: 3774864 (1973-11-01), Hurkamp
patent: 3776489 (1973-12-01), Wen et al.
patent: 3951360 (1976-04-01), Anxionnaz
patent: 3974986 (1976-08-01), Johnstone
patent: 3997132 (1976-12-01), Erwin
patent: 4205810 (1980-06-01), Ishimitsu
Boppe Charles W.
Harvie Stuart G.
Barefoot Galen L.
Geib Richard G.
Grumman Aerospace Corporation
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