Superchargers
This is a 1931 NACA technical memorandum on aircraft engine superchargers, issued by the National Advisory Committee for Aeronautics for engineers and aircraft designers. The pages show engineering drawings and photographs of Farman and Bristol supercharger parts, including gears, impellers, sectional views and the Dugald-Northington centrifugal unit. A designer might take from them the dense mechanical line-drawing style, exploded part diagrams and grayscale photographs of machined metal components.
