A Flight Comparison of Conventional Ailerons on a Rectangular Wing and of Conventional and Floating Wing-Tip Ailerons on a Tapered Wing
A 1938 NASA technical report comparing aileron designs in flight tests, with conventional and floating wing-tip ailerons on a tapered wing and conventional ailerons on a rectangular wing, written for aeronautical engineers. The two pictures are data graphs plotting air speed in feet per second against floating aileron angle, maximum rolling velocity and rolling acceleration. A designer might borrow their clean line-and-marker chart style, with dashed and solid trend lines, open circles and triangles, and labelled axes.

