Lecture on aerodynamics
A technical lecture on aerodynamics issued by NASA's Technical Reports Server, dated 1923 and aimed at aeronautics students and engineers. The single picture is a line diagram of wing polar curves, plotting lift coefficient against drag coefficient for several aspect ratios with a shaded induced-drag region. A designer could take its clean monochrome plotting style, labelled dashed and dotted curves, and minimal axis layout as a model for technical graphics.
