Propulsion by Reaction
A 1930 technical report from the NASA Technical Reports Server, a scanned aeronautical document on propulsion by reaction, with its authorship and original publication context not fully recorded in the catalogue. Its pictures are engineering line drawings and graphs: a schematic of a propeller-like jet with velocity vector diagrams, a cutaway of an air inlet with compressor and housing, and a family of efficiency curves plotted against a ratio h on labelled axes. A designer might take from them the clean, diagrammatic conventions of early aviation engineering, with thin black linework, labelled arrows and dashed flow lines, and the plain grid-and-curve style of technical charts.
