Method for the determination of the spanwise lift distribution
This is a 1935 NACA technical memorandum from the NASA Technical Reports Server, written for aeronautical engineers, setting out a method for calculating how lift is spread along a wing's span. Its pages carry line graphs of lift and twist against span position, three-dimensional projected surface diagrams, a wing planform outline, and a set of curves comparing successive approximations. A designer might take from them the clean, labelled style of 1930s engineering graphics, with thin black linework, hatched surfaces and axis-marked curves that read well as schematic diagrams.
