What are Those Things on Airplanes’ Wings?

Have you ever wondered what those things are on airplane wings? You know, those little angled bits of metal? Watch to learn what they are and how they’re used!

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Sources:
http://www.airspacemag.com/flight-today/how-things-work-winglets-2468375/?no-ist

http://www.boeing.com/commercial/aeromagazine/articles/qtr_03_09/article_03_1.html
http://www.boeing.com/commercial/aeromagazine/aero_17/winglet_story.html

https://spinoff.nasa.gov/Spinoff2010/t_5.html

Images:
Winglet: https://commons.wikimedia.org/wiki/File:737-NG_winglet_effect_(simplified).svg
Winglet Photo:https://commons.wikimedia.org/wiki/File:CO-Winglet.JPG
Richard Whitcomb: https://commons.wikimedia.org/wiki/File:Richard_Whitcomb_Examines_Model_-_GPN-2000-001262.jpg

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