Diagrams of airplane stability
This is an annual report of the US National Advisory Committee for Aeronautics from 1921, a government technical publication for aeronautical engineers and researchers. The pages are graph sheets of airplane stability diagrams, with curves plotted on gridded axes and labelled with coefficient values. The gridlines, dense curve families and small labelled points suggest a designer could borrow the graph-paper structure and the crowded annotated line-chart look.
