Discussion of the results of the boundary-layer tests of an airfoil fitted with a rotary cylinder
A 1927 NASA technical report, published by the NASA Technical Reports Server, on boundary-layer test results for an airfoil with a rotating cylinder, written for aerodynamics researchers. The pictures are velocity profile graphs plotting boundary-layer speed in metres per second against height in centimetres above the wing surface, with curves labelled by station numbers beside a small airfoil section diagram. A designer could borrow the clean line-and-marker plotting style and the schematic airfoil silhouette with lettered stations.

