Notes on the design of ailerons
A 1923 technical report from the NASA Technical Reports Server, a digitised aeronautics document on aileron design, whose graphs suggest it was written for aircraft engineers. The two charts plot recommended limits and relative aileron efficiency against the ratio of aileron chord to wing chord and the ratio of aileron span to wing span, with labelled lines and marked data points. A designer might take from them the clean grid layout, the simple labelled curves and the restrained annotation style of early engineering graphics.
