Experiments with an Airfoil from which the Boundary Layer Is Removed by Suction
A 1926 NASA technical memorandum, number 374, reporting wind-tunnel experiments on an airfoil whose boundary layer was removed by suction. The pictures are engineering graphs, a labelled airfoil profile and a test-rig diagram with a photograph, all in plain black and white with line drawings and typed captions. A designer could take from them the clean geometry of a wing cross-section and the diagrammatic style of early aerodynamic technical plates.
