Contribution to the mutual interference of wing and propeller
A 1934 technical report from the NASA Technical Reports Server, a scientific paper on aerodynamics studying how a wing and a propeller affect each other's airflow. Its figures are line diagrams: streamline and velocity-distribution sketches across a wing, a propeller disk, and a plotted theory-versus-experiment curve with an airfoil inset. A designer might borrow the clean flow-line and arrow motifs for diagrammatic graphics about air movement or motion.
