Effect of nose shape on the characteristics of symmetrical airfoils
This is a 1931 NACA technical report, Effect of nose shape on the characteristics of symmetrical airfoils, issued by the National Advisory Committee for Aeronautics for aeronautical engineers and researchers studying wing sections. The four plates are engineering graphs of profile drag, lift coefficient, and pitching moment against lift for airfoil sections of different thicknesses. Their clean grid-paper line charts, with thin curves, circled data points, and labelled section codes, suggest a designer could borrow the restrained technical graph layout, grid rhythm, and small caption typography.
