To investigate how shortfin mako sharks achieve their impressive speeds, researchers tested real sharkskin samples, using digital particle image velocimetry. They discovered that a 'passive bristling' capability of the microscopic surface geometry of the shark's scales controlled flow separation, which causes pressure drag -- the most influential cause of drag on aircraft. The work could lead to new designs to reduce drag on aircraft.
from Top Technology News -- ScienceDaily https://www.sciencedaily.com/releases/2019/03/190304095859.htm
from Top Technology News -- ScienceDaily https://www.sciencedaily.com/releases/2019/03/190304095859.htm
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