Thread: Discussion Common airfoils
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Old Oct 10, 2012, 01:26 AM
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What's an airfoil but a distribution of points around a mean line. That was the point of tweaking the 4412 to the same thickness and camber. Do that with a Selig or something(I should) and the visible differences would be more pronounced. It reinforces what historians have said about the NACA 4 digit and the Clark Y, they have the same blood lines.

As for the smoothed vs. non smoothed, I checked the difference between the smoothed and the non smoothed Clark Y and it was very small in thickness and camber, much less than what I did to the 4412 to normalize it. I even tried using CADD and PANE to smooth the standard Clark Y, but there are some strange extra ordinates that show up as squiggles.
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