The experimental and calculated characteristics of 22 tapered wings
This is a 1938 NASA technical report, compiled by the NASA Technical Reports Server, presenting experimental and calculated aerodynamic data for tapered wing sections for aviation engineers. The two plates pair wind-tunnel and calculated curves: lift and drag against angle of attack on the left, and pitching moment against lift coefficient on the right, with tabulated test conditions and airfoil profile sketches. A designer could take from them the clean, sparse plotting style of engineering graphs, with thin black curves, dashed calculated lines, and labelled axes suited to technical diagrams.
