Quote:
Originally Posted by aerohead
I wish their Paper had gone into greater detail to break out pressure drag and skin friction effects.
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I hear a lot of talk about skin drag but it seems it is completely inconsequential compared to turbulent wake drag when talking about shapes moving through air. The NCFMF video shows that a round rod with the same max thickness as the ideal airfoil, and only a small fraction of the skin area (1/20th?), has 9 TIMES the drag.
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http://ecomodder.com/forum/showthrea...rag-25378.html
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Add whatever skin is needed to get the most ideal shape you can conveniently use and you will have the lowest drag.