Full-Scale Wind-Tunnel Tests on Several Metal Propellers Having Different Blade Forms
A 1931 NASA technical report on full-scale wind-tunnel tests of several metal propellers with differing blade forms, issued for aeronautical engineers and researchers. The pictures are engineering charts of propeller efficiency and blade outlines, a dimensioned fuselage and direct-drive engine layout with cross-sections, and a photograph of an air-cooled radial engine mounted in an aircraft. A designer might take from them the clean, technical line-chart and dimensioned-drawing style of early aviation documentation.
