Problems concerning the stability and maneuverability of airplanes
This is a 1932 NACA technical memorandum on aircraft stability and maneuverability, issued by the NASA Technical Reports Server collection for aeronautical engineers and researchers. Its pictures are plain line diagrams: a schematic of an airframe with a moment arm and angle labels, and three graphs of a moment coefficient against angle of attack showing stable and unstable curve shapes. A designer might take from them only the clean technical diagram style of labelled arrows, dashed reference lines and simple axis graphs.
