Thread: Discussion Common airfoils
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Old Oct 10, 2012, 12:14 AM
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Joined Mar 2006
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Yeah, but a smoothed Clark-Y isn't really a Clark-Y anymore. For starters the (very strong) smoothing process caused the bottom surface to go slightly under-cambered. Also a NACA 4412 with thickness and camber parameters adjusted isn't a NACA 4412 any more

But I take your point.. The NACA 4412 is very close to a Clark-Y, but it's incorrect to say they are the same because there are small but significant differences.
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