Flight and Wind-tunnel Tests of an XBM-1 Dive Bomber
This is a 1938 NACA technical note reporting flight and wind-tunnel tests of the XBM-1 dive bomber, issued by the National Advisory Committee for Aeronautics for aeronautical engineers and researchers. The single plate, Figure 1, shows the XBM-1 airplane photographed in profile on a rotated page, with a biplane wing structure, a propeller and a dark tail against a pale ground. A designer might take its stark, high-contrast engineering photograph as a reference for period aircraft silhouettes and wire-braced structure.
