Pressure drop in tank and float vent tubes on diving airplanes
This 1939 NASA technical report, issued by the NASA Technical Reports Server collection, gives engineering charts of pressure drop in tank and float vent tubes on diving airplanes, presented as figures for aircraft designers. The two pictures are landscape-rotated graph sheets with grid lines, altitude scales running up the right side and pressure values along the bottom, and a family of diagonal curves labelled by tube length, giving a designer a clear model for plotting multi-parameter performance data.
