Low drag surface
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Sep 11, 1990
Grant Date -
N/A
app pub date -
Sep 20, 1984
filing date -
Sep 20, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Cited Art Landscape
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