Full scale determination of the lift and drag of a seaplane
This is a 1922 NASA technical report on full-scale measurement of lift and drag for a seaplane, issued through the NASA Technical Reports Server and aimed at aeronautical engineers. The single picture is a set of dimensioned orthographic drawings of the Brandenburg seaplane, showing plan, front, and side views with measurement callouts and wing span notations. A designer could take from it the clean, technical drawing conventions of early aircraft documentation, with thin black linework, arrow dimension lines, and labelled elevations.
