Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1984-09-20
1990-09-11
Jordan, Charles T.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244130, 244207, B64C 138
Patent
active
049555650
ABSTRACT:
A low drag surface comprises at its upstream edge, an intermittent linear vortex producing means which extends transverse to the flow over the surface and produces a succession of rolling vortices extending transverse to said flow. The vortices move across the surface and reduce drag in the manner of roller bearings. In preferred embodiments the vortex producing means is mechanical, in the form of an oscillating part or fluid dynamic, in the form of a nozzle arrangement.
REFERENCES:
patent: 2716460 (1955-08-01), Young
patent: 3525486 (1970-08-01), Wimpenny
patent: 3774867 (1973-11-01), Quinn
patent: 4039161 (1977-08-01), Bauer
patent: 4117995 (1978-10-01), Runge
patent: 4434957 (1984-03-01), Moritz
Jordan Charles T.
Lieberman Rochelle
Rolls-Royce plc.
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