Working charts for the determination of the lift distribution between biplane wings
This is a 1934 NACA-style technical report of working charts for estimating lift distribution between the wings of biplanes, issued by the NASA Technical Reports Server collection for aeronautical engineers. The pictures are plain engineering graphs: curves of a dimensionless ratio R against lift coefficient C_L, drawn with data points from referenced wind-tunnel tests and fitted lines for decalogs at several stagger and gap settings. A designer could take their restrained two-colour line work, dashed and solid curve pairs, and legend-keyed symbol grids as a model for technical data plots.
