Air forces and air-force moments at large angles of attack and how they are affected by the shape of the wing
This is a 1930 NASA technical report on aerodynamic air forces and moments on wings at large angles of attack, written for aeronautical engineers and researchers, with its figures plotting lift, drag and moment coefficients against angle of attack. The pictures are graphs with labelled curves, axes and angle values in degrees, plotted as thin black lines on white, showing how force and moment coefficients change with wing shape and angle.
