An experimental analysis is performed in a wind tunnel on wings with wavy leading edge derived from humpback whale flippers. The major peculiarity of such flippers is given by the presence of several bumps placed along the leading edge, called tubercles, giving rise to a sort of wing with irregular wavy leading edge. Specifically, the important question to be solved is if the tubercles are able to delay wing stall and to attain higher lift in comparison to a standard wing without them. The present investigations employ different measurement techniques in order to evaluate the amount of possible gain, the potential drawbacks and the physics under such a phenomenon.
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