Preliminary Investigation of Certain Laminar-Flow Airfoils for Application at High Speeds and Reynolds Numbers
A 1939 NASA technical report, issued through the NASA Technical Reports Server, on preliminary wind-tunnel tests of laminar-flow airfoils for high-speed aircraft at high Reynolds numbers, written for aeronautical engineers. Its pictures are engineering charts: airfoil section outlines drawn above grids of pressure or transition data, and line graphs plotting lift, drag, moment and L/D against angle of attack, with tabulated test notes. A designer might take from them the clean, schematic look of technical plotting, with fine grid lines, dashed and solid curves, and small cross markers.
