| 摘要 |
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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