Periodic Stresses in Gyroscopic Bodies, with Applications to Air Screws
This 1918 NASA technical report on periodic stresses in gyroscopic bodies applies gyroscope torque theory to air screws (propellers), written for engineers and aeronautical researchers. Its three pictures are technical diagrams: ellipse and vector plots of gyroscopic torque about the axes of precession and nutation, and a grid of sinusoidal torque curves for symmetric particle groupings. A designer could take their clean line work, dashed-and-solid curve plotting, and labelled axis schemes as a model for precise technical diagramming.
