High efficiency tip vortex reversal and induced drag reduction
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United States of America Patent
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Apr 24, 2007
Issued Date -
N/A
app pub date -
Jun 25, 2003
filing date -
Jun 26, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods for increasing the performance of a foil (100) by using tip droop (102) having an inward directed camber capable of generating an inward directed lifting force on the tip droop (102) in order to control spanwise flow conditions adjacent the tip (112) of a foil (100). Methods for varying the inward lifting shape of a tip droop (102) are provided along with methods for varying the angle of attack and camber of the tip droop (102) as the angle of attack of the foil (100) is changed and as spanwise flow conditions vary.
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