Effect of Aerodynamic Design on Glider Performance
A 1935 technical report on glider aerodynamics, issued by a NASA technical reports archive as a sequence of engineering figures for research and engineering readers. Its pictures show three-view drawings, a velocity polar chart, and the D-São Paulo glider in flight and under construction, with wing-fuselage fillet details; a designer could take from them the clean, purposeful line of a sailplane's long wings, slender fuselage and smoothed joints as a reference for streamlined forms.
