winglets


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winglets

winglets
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 ?
APB estimates that Blended Winglets have saved airlines worldwide 5.
GOL has always been a valued customer of APB and has operated with Blended Winglets on its Boeing Next-Generation 737 airplanes for over a decade," said Christopher Stafford, Aviation Partners Boeing director of sales and marketing.
Within next couple of days, APB expects F certification of the winglets.
The Aviation Partners Boeing (APB) joint venture now supplies blended winglets for 737NGs, 757s and the 767-300ER.
Aviation Partners began discussions with Airbus in 2006 regarding the use of its blended winglets on Airbus A320 series aircraft.
A Blended Winglet-equipped airplane is aerodynamically cleaner so it flies more efficiently and uses its engines less than an aircraft without winglets.
The investment in the installation of the winglets on our fleet is an important part of Sun Country's continued growth strategy centered on our low-cost service model," said Shaun Nugent, CEO of Sun Country.
API's Blended Winglets are additions to the airplane wing that are significantly more efficient than standard wing tips.
has announced that Southwest Airlines has placed order for 85 of its split scimitar winglets for the Texas carrier s 737-800 airplanes.
This advanced winglet improves on the existing blended winglets United currently has on its next generation 737 fleet.
Joe Clark, founder and CEO of Aviation Partners, said today that "We are certainly surprised by the lawsuit attempting to invalidate our patent on Blended Winglets after working closely with Airbus over the past five years.
High/hot airport performance (2nd segment climb) is improved with Blended Winglets and operators will enjoy quicker climb to altitude and reduction of step climbs on many mission profiles.