Encyclopedia

wing-tip sail

A wing-tip device to produce a significant reduction in drag. At the tip of the wing, there is a strong upflow, as the air spills over from the underside. The sails are angled so that they generate a forward component of force, or negative drag. Also known as wing feathers or winglets.

Mentioned in

blended winglets
blended-wing tips
tip sails
wing feathers
winglets
wing-tip sails
wing-tip winglets

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