https://estebanhufstedler.com/2020/07/08/airfoils-with-circular-leading-edges/
Airfoils with Circular Leading Edges – Extra Polynymous
Jul 8, 2020 - Airfoils are generally thickest somewhere around the middle. The classic NACA four-digit airfoils are thickest at 30% of the chord, and laminar flow airfoils...
leading edgesairfoilscircularextrapolynymous