The dangerous sideslip of a stalled airplane and its prevention
A 1931 technical report from NASA's Technical Reports Server, a scientific paper on aircraft dynamics, examining how a stalled airplane can enter a dangerous sideslip and how that motion might be prevented. The pictures are engineering plots: time-history curves of velocity, angles and angular rates, eigenvalue curves against a parameter, and a numerical integration comparison. A designer might take from them the clean, sparse plotting style of early aeronautical graphs, with labelled axes, varied line weights and dashed comparison curves.
