Profile-Drag Investigation of an Airplane Wing Equipped with Rubber Inflatable De-Icer
This 1939 NACA technical report, issued by the United States National Advisory Committee for Aeronautics, measured the drag of an airplane wing fitted with a rubber inflatable de-icer, written for aeronautical engineers and researchers. The pictures show Lockheed 18 aircraft and wing sections with dark rubber de-icer boots along the leading edges, some with simulated ice shapes, photographed in hangars and on airfields. A designer might take from them the stark tonal contrast of aluminium aircraft surfaces against dark rubber strips and the striped, segmented texture of the boots.
