Static longitudinal stability and longitudinal control of autogiro rotors
This is a 1938 NACA-style technical report from the NASA Technical Reports Server on the static longitudinal stability and control of autogiro rotors, written for aeronautical engineers and researchers. Its pictures are plain line graphs of pitching-moment coefficients against angle of attack in degrees, with curves labelled by control-surface settings, plus one schematic of an autogiro with its rotor axis and dimensions marked; a designer might borrow the clean graph style and the simple labelled-diagram layout.
