Parachutes for aircraft
A 1928 technical report on aircraft parachutes, issued through the NASA Technical Reports Server and drawn from a NACA-era archive for engineers and aviation researchers. Its pictures are engineering graphs of parachute descent, with labelled curves plotted against time and velocity on gridded axes, plus key lists keyed to letters; a designer might take the clean, diagrammatic line charts and their precise lettered annotation style as a model for technical data graphics.
