[kach22i]

Thank you Aerohead for putting this all in one spot.

I assume all of these radius's are modeled on a 90 degree return angle on a flat plane and not some complex curve tapered teardrop form with a NACA foil number.

Let's say one takes a symmetrical cord foil and cuts the fish head off at the thickest point, then puts a 2 inch radius at corners.

How much would that alter the drag coefficient?

See attached study.