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Why NACA 0012 airfoil is said to be symmetric airfoil?(a) Because of no camber(b) Because of camber(c) Because of no thickness(d) Because of chord lineI have been asked this question by my school principal while I was bunking the class.This interesting question is from Airfoil Nomenclature in chapter Incompressible Flow over Airfoils of Aerodynamics

Answer»

Correct choice is (a) Because of no camber

Easy EXPLANATION: The NACA 0012 AIRFOIL indicates the symmetric airfoil, because an airfoil with no camber, that is with the camber line and CHORD line co-incident in an airfoil is called a symmetric airfoil. For the NACA 0012 airfoil is with a maximum thickness of 12%.



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