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Shark riblets can greatly reduce the drag of an airfoil, AND increase it's lift! But how? And by how much?
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Werq Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/
Paper and thumbnail: https://www.mdpi.com/2227-9717/9/12/2102, Licensed under creative commons: https://creativecommons.org/licenses/by/4.0/
Shark skin picture: https://pursuit.unimelb.edu.au/articles/how-sharks-can-help-combat-air-turbulence, Licensed under creative commons:https://creativecommons.org/licenses/by/4.0/#CFD #Aerodynamics #Turbulence #Riblets #SharkSkin