Winglets reduce wingtip vortices, the twin tornados formed by ... Richard Whitcomb, a NASA aerodynamicist, published a paper that compared a wing with a winglet and the same wing with a simple ...

AR = s^2 / A = s^2 / (s * c) = s / c Glen Research Center, NASA Size doesn't always matter ... high aspect ratios reduce the wingtip vortices, thereby minimizing induced drag, which benefits ...