blended winglets

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A small, nearly vertical, winglike surface usually shaped like the airfoil section attached to the wing tip. The surface may or may not have control surfaces. It is generally located rearward above the wing tip and is effective in reducing the induced drag by reducing the spilling of high-pressure air beneath the wing to a lower pressure above the wing. Two small vortices create less drag than one huge vortex; thus, they create less of a hazard to aircraft following on approach through a less-induced wake turbulence. Winglets are most effective at a low speed or high alpha, where the induced drag is the highest. They may produce a forward component of lift as well as reduce the induced (vortex) drag, thus improving the range of long-range as well as short-range commuter jets. Also called wing-tip winglets, blended-wing tips, blended winglets, tip sails, or wing-tip sails. See also wing-tip sail.
References in periodicals archive ?
The new wingtip devices will reduce fuel burn particularly over longer sectors.
The wingtip devices will also enhance the aircraft's performance.
Airbus, an aircraft manufacturer, yesterday announced that Air Arabia, a low-cost Middle East and North Africa carrier, has selected Sharklets wingtip devices for 28 out of 44 A320 aircraft it has ordered.
To stay competitive in the market, Airbus is upgrading its A320 by adding sharklets - wingtip devices designed to improve fuel efficiency of the aircraft - beginning in 2012.
The A320neo is an improved version of the existing Airbus A320 Family, which incorporates new, more-efficient engines and large "Sharklet" wingtip devices, together delivering approximately 15 percent in fuel savings, among other benefits.
Equipped with large wingtip devices dubbed Sharklets to reduce fuel burn, the A321 offers the best seat-mile costs in its class.
The sharklets, which are eight foot tall wingtip devices, help save fuel and enhance the overall efficiency of the aircraft.
The combined effect of these cunning little wingtip devices and the improved efficiency engines is to reduce fuel consumption by 15%.
All of the aircraft will feature large, fuel-saving wingtip devices known as Sharklets.
The A320s will feature fuel-saving large wingtip devices called Sharklets.
All of Deltas A321s feature fuel-saving Sharklets lightweight composite wingtip devices that offer up to 4 percent fuel-burn savings.
All 260 aircraft will also feature large, fuel-saving wingtip devices known as sharklets, as American moves to make its fleet as efficient as possible.