Micarta propellers IV : technical methods of design
A 1924 NASA technical report on Micarta propeller design methods, issued as part four of a series for aeronautical engineers working on aircraft propellers. The pictures are engineering graphs of bending moment against radius along a propeller blade, plus a velocity-triangle diagram of blade forces, drawn in plain black line on squared paper with lettered curves. A designer might take from them the restrained grid-and-curve style of mid-century technical charts for structured data graphics.
