Limitations of the Pilot in Applying Forces to Airplane Controls
This is a 1936 NACA technical note, issued by the National Advisory Committee for Aeronautics, on the limits of how much force a pilot can apply to aircraft controls, written for aeronautical engineers and test researchers. Its pictures are plain line-drawn diagrams of aircraft control stick and wing layouts in oblique perspective, with labelled force vectors and dimension lines, offering a designer little beyond technical schematic conventions for arrows, callouts and isometric-style grid drawings.
