Technical report of the 1928 Rhon soaring-flight contest
A 1929 technical report issued by the NACA (rendered here as NASA Technical Reports Server) on the 1928 Rhön soaring-flight contest for glider designers and aeronautical researchers. The first two pictures are line drawings of wing and tail joints with a fuselage section, and the third is a photographic plate of gliders and sailplanes in flight and on the ground, numbered Figs. 1 to 19, showing a range of wing layouts a designer could compare.
