Flow in Smooth Straight Pipes at Velocities Above and Below Sound Velocity
This is a 1938 NASA technical report, here presented as a translated engineering paper on compressible gas flow in smooth straight pipes at speeds both above and below the speed of sound. It serves engineers and researchers in aerodynamics and fluid mechanics. The pictures are technical graphs of pressure ratio against distance over pipe diameter, plus a schematic of a pressurised air apparatus with tall cylindrical tanks, valves and piping, showing the experimental setup. A designer might take from them the clean, dense line-graph style of early engineering charts and the industrial schematic look of pipework and tanks.
