The variation in pressure in the cabin of an airplane in flight
This is a 1931 NACA technical note, issued by the National Advisory Committee for Aeronautics in the United States, for aeronautical engineers and researchers. Its plates are line drawings of a Fairchild cabin monoplane showing where pressure survey points and air-speed heads were placed on the fuselage, wings and struts. A designer could take from them a clean, labelled technical diagram style with dimension lines, numbered callouts and dashed window outlines.
