Analysis and Model Tests of Autogiro Jump Take-off
A 1936 NACA technical note on autogiro jump take-off, issued by the National Advisory Committee for Aeronautics for aeronautical engineers and researchers. Its single plate is a page of sequential rotor-test photographs, each frame showing a three-bladed rotor at a different moment with a labelled figure caption beneath, which a designer could use for a grid of repeated motion-study frames or a time-sequence layout of mechanical forms against a dark ground.
