The Design and Development of an Automatic Injection Valve with an Annular Orifice of Varying Area
A 1931 technical report from the NASA Technical Reports Server, a record of engineering research on an automatic fuel injection valve with an annular orifice. Its pictures are scientific: high-speed photographs of fuel spray penetration over time, plus engine combustion chamber cross-sections and performance graphs. A designer might take from them the clean line-plate style of period engineering diagrams, with dark photographic sequences showing expanding spray forms as useful visual material.
