Simplified aerodynamic analysis of the cyclogiro rotating wing system
This is a 1930s NASA technical report on the cyclogiro, a rotating-wing aircraft design, prepared for aeronautical engineers and researchers. The pictures show a cyclogiro airframe drawing, a rotor-system diagram with blade eccentricity and phase angle, a velocity-vector diagram, and graphs of force increments against control settings. A designer might take from them the clean line-drawing style of technical aviation figures and the radial, spoked geometry of the rotating blades.
