A Method of Flight Measurement of Spins
A NASA technical report from 1932 on measuring aircraft spins in flight, with its text and figures issued through the NASA Technical Reports Server collection. The pictures are plate-style line drawings and photographs of a biplane trainer, showing plan and side views with dimension lines, a cockpit interior, and a sequence of three-view attitude diagrams. A designer might take from them the clean technical drawing conventions: thin dimension leaders, orthographic three-view layouts, and labelled schematic arrows for motion.
