Tests in the Gust Tunnel of a Model of the XBM-1 Airplane
A 1939 NACA technical note published by the National Advisory Committee for Aeronautics, reporting wind-tunnel gust tests on a scale model of the XBM-1 biplane for aeronautical engineers. The pictures are graphs of vertical displacement, pitch angle, angle of attack and acceleration plotted against horizontal distance in chord lengths, plus a photograph of the model with its biplane wings and struts, shown in grey monochrome on plain cream pages with ruled grid lines and small printed captions.
