ORIGINAL: JKEpps
Just to satisfy my curiosity, I'd still like to know if there is a direct mapping though of Eppler to NACA.
It depends on what you mean by direct mapping of Eppler to NACA?
Eppler airfoils are just shapes plotted with x-y coordinates like NACA airfoils are other shapes mapped with x-y coordinates.
If you're looking for something that maps a bunch of different sources of airfoils by having the coordinates in data files for use on demand, then maybe somebody can help answer that.