The Effect of Injection-Valve Opening Pressure on Spray-Tip Penetration
This NACA technical report from 1931, issued by the National Advisory Committee for Aeronautics for engineers and researchers, studies how injection-valve opening pressure affects how far fuel spray penetrates. The three pictures are plain engineering line graphs with dotted and crossed data points, grid lines and legends, offering a designer little beyond a sparse, technical chart style with hand-plotted curves in black ink on white.
