Pressure-distribution measurements on a rectangular wing with a partial-span split flap in curved flight
This NACA technical note from 1939, published by the National Advisory Committee for Aeronautics for aeronautical engineers and researchers, reports wind-tunnel pressure-distribution measurements on a rectangular wing fitted with a partial-span split flap during curved flight. The pictures are dense black-and-white charts of pressure coefficient curves plotted against chord positions across inner and outer half-span sections, plus a wing plan diagram with numbered tap locations. A designer might take from them the sparse, grid-based graph style and the tabular line-plot vocabulary of engineering documentation.
