Spinning Characteristics of Wings IV : Changes in Stagger of Rectangular Clark Y Cellules
This is a 1937 NACA technical report, issued by the National Advisory Committee for Aeronautics in the United States for aeronautical engineers and researchers, on spin behaviour of rectangular Clark Y biplane cellules with varied stagger. The graphs plot rolling-moment and yawing-moment coefficients against inertia parameters in faint grey line charts on ruled grids, while the photograph shows a biplane wing cell mounted on a spinning balance above a curved tank. A designer might borrow the clean monochrome chart styling, the dense multi-line plots, and the stark black-and-white engineering photograph.
