Discharge characteristics of a high speed fuel injection system
A 1925 NACA technical note on the discharge characteristics of a high speed fuel injection system, issued by the National Advisory Committee for Aeronautics in the United States for engineers and aircraft engine designers. Its pages are engineering charts plotting travel of crankshaft degrees against stroke in inches, with hatched bands marking operating ranges for each orifice and speed condition. A designer might take from them the plain, grid-based visual language of technical graphs, with shaded zones, labelled curves and small figure callouts that could inform diagram or data-display layouts.
