Combustion in a High-Speed Compression-Ignition Engine
A 1933 technical report from the NASA Technical Reports Server, a research record on combustion in a high-speed compression-ignition engine, written for engine engineers and researchers. Its pictures are plain engineering charts drawn on gridded paper, plotting cylinder pressure against crank angle, stroke and fuel injection rate in black lines with labelled curves. A designer might take from them only the dense, sparse graphic language of data plots: grid rhythm, curve families and annotated axes.
