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Turbulent friction drag is a major cause for the energy loss of aircraft. We show that the friction drag of an airfoil can be reduced by about 20-40% by blowing air from the airfoil surface at a very low speed.
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This page is a summary of: Assessment of Friction Drag Reduction on a Clark-Y Airfoil by Uniform Blowing, AIAA Journal, March 2019, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/1.j057998.
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