Aerodynamic characteristics of a large number of airfoils tested in the variable-density wind tunnel
A 1938 NASA technical report presenting aerodynamic test data for many airfoil shapes from the variable-density wind tunnel, written for aeronautical engineers and researchers. The single page is a dense technical diagram with a force-vector sketch above a ruled data table, formula lines, and a symbol key, offering a designer little beyond its graphic structure: grid-like tables, small-type typography, and a radial sketch of forces.
