Wingtip device - Factbites

Wingtip device - Factbites
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Topic: Wingtip device

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	Concept to Reality
		The coordinated research program performed at the centers investigated the effectiveness of a myriad of aerodynamic schemes such as spoilers, vortex generators, wingtip vortex-attenuating devices, steady and pulsed mass injection, oscillating control inputs, and span load variations.
		After extensive parameter variations in the VRF and in-flight assessments with the C-54 as a generating aircraft and a Piper PA-28 general aviation aircraft as a probe aircraft, the researchers concluded that the spline device was effective in reducing the strength of the trailing vortex.
		The vortex attenuation achieved in flight was greater than that obtained in the VRF, and the researchers anticipated that the installation of stowable spline devices on commercial jet aircraft would avoid the obvious penalties in climb capability in the landing phase of flight and increased approach noise due to increased power settings.
	oea.larc.nasa.gov /PAIS/Concept2Reality/wake_vortex.html (8008 words)

	Aerospaceweb.org Ask Us - M. P. W. Boulton and the Aileron
		One of these control surfaces is located on each wingtip, and they are primarily used to perform banking turns.
		It is within this publication that Boulton probably first coined the term aileron, meaning "little wing," and described how such a device could be used to perform the function to which the modern aileron was later applied by Frenchman Henri Farman.
		Matthew Piers Watt Boulton was the son of Matthew Robinson Boulton.
	www.aerospaceweb.org /question/history/q0133b.shtml (8008 words)

	Winglet - Wikipedia, the free encyclopedia
		A winglet is a device used to improve the efficiency of aircraft by lowering the lift-induced drag caused by wingtip vortices.
		Winglets are also used in the aerodynamics of racing cars, as seen on the edges of these Formula 1 front spoilers.
		The winglet is a vertical or angled extension at the tips of each wing.
	en.wikipedia.org /wiki/Winglet (349 words)

	Dart
		The Dart had comparatively large cruciform wings and fins for stabilization and control, and used wingtip spoilers for steering.
		It's maximum range was about 3000 m (10000 ft), and to increase accuracy for long-range shots, an infrared terminal homing device was to be installed.
		After launch, the Dart 's bright tail-mounted sodium flare was optically tracked by the operator, who would send corrective commands via a spooled-out wire to keep the missile on the line of sight to the target.
	www.astronautix.com /lvs/dart.htm (349 words)

	The Oz Report hang gliding news - 7.265 Oct.11 '03
		All these observations come from flying with a keel-mounted rudder and also with a wingtip drag device on several different gliders including an Airborne Blade.
		Some gliders have far more anhedral than the Blade and the other gliders I tested and so the negative coupling effect would likely be even more pronounced on these wings.
		I wonder if there might be the potential for some serious problems at high speeds though, especially on the wings with the most anhedral like some of the Laminars.
	ozreport.com /7.265 (2121 words)

	Winglet biography .ms
		A winglet is a device used to improve the efficiency of aircraft by lowering the lift-induced drag caused by wingtip vortices.
		The vortex which rotates around from below the wing strikes the angled surface of the winglet, generating a small lift force that angles forwards relative to the direction of flight - thus the energy in the vortex contributes to thrust rather than drag as it normally would.
		This is analogous to a sailing boat sailing very close to the wind.
	winglet.biography.ms (225 words)

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