Winglets—small vertical fins on wingtips—reduce the strength of wingtip vortices (air swirling off the ends of the wings). Most airliners feature some type of winglet to help decrease drag.
Winglets—small vertical fins on wingtips—reduce the strength of wingtip vortices (air swirling off the ends of the wings). Most airliners feature some type of winglet to help decrease drag.