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Kosum December 30, 2008 11:22

about Lift-Drag coefficient
i'm analysing Cl,Cd of airfoil but when i'm increase the airfoil cord length (same profile-NACA2515) the Cl,Cd is increase too

is this what suppose to be?

Aloe December 31, 2008 22:29

Re: about Lift-Drag coefficient
Everything else equal, changing the chord length will change the Cd and Cl. When you change the chord length, you are also changing the Reynolds Number and consequentially the lift and drag characteristics of the airfoil

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