This is a useful resource to find which airfoil shape is used on a particular make or model.

http://www.ae.illinois.edu/m-selig/ads/aircraft.html

The Rosetta stone for NACA airfoils decodes the numbers:

http://pr.erau.edu/~draut129/NACAairfoilDesignations.html

Maybe others in the know can chime in on the different flight characteristics between common airfoils for the benefit of the rest of us?

Cool.

go here for plots: http://windandwet.com/windturbine/airfo ... /index.php