Airfoil section characteristics as applied to the prediction of air forces and their distribution on wings
This is a 1938 NACA technical report on airfoil section characteristics, issued by NASA Technical Reports Server for aeronautical engineers predicting wing air forces. Its pictures are engineering charts of lift increments, Reynolds-number curves, chord pressure distributions and local pressure difference plots drawn as thin black lines on gridded white paper, offering a designer little beyond restrained graph-paper structure and sweeping curve forms.
