Winglet Airfoil design by Mark D. Maughmer and Michael Selig at the Pennsylvania State University.
<a href="https://en.wikipedia.org/wiki/User:Dhaluza" class="extiw" title="wikipedia:User:Dhaluza">Dhaluza</a> at <a href="https://en.wikipedia.org/wiki/" class="extiw" title="wikipedia:">English Wikipedia</a>
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<span class="int-own-work" lang="en">Own work</span>