Wheel brakes and their application to aircraft
This is a 1928 NACA technical memorandum, published by the National Advisory Committee for Aeronautics, on aircraft wheel brakes, written for engineers and aircraft designers. Its pictures are plain black-and-white engineering line drawings of wheel hubs, brake drums and sectional views, with part labels and dimension lines, showing mechanical structure rather than decoration, so a designer might borrow their clean technical diagram style for product sketches.
