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Leading edge and trailing edge of an airfoil rotor blade

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Old   July 11, 2014, 00:07
Default Leading edge and trailing edge of an airfoil rotor blade
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Jun Milan
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Hi all. I have the airfoils that consist a rotor blade (in 3D). Each airfoil contains 428 points approximatively which I have their cartesian coordinates (x,y,z). Because I am in 3D, I have difficulties finding for each airfoil, which point is the leading edge and which point is the trailing edge. Do yo have any suggestion please ?

(I need this to prepare the file blade.curve for Turbogrid)

Thank you very much for your help, Petro.
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