Relation of "Lilienthal effect" to dynamic soaring flight
A 1925 technical report from the NASA Technical Reports Server, a scientific paper on the Lilienthal effect and dynamic soaring flight, written for aeronautical researchers. Its pages are plotted graphs of aerodynamic force coefficients and velocity curves over one period T, with figure numbers and labelled axes. A designer might take from them the clean, hand-drawn look of early engineering plots, with shaded curve areas, dashed guide lines and tick-marked grids.
