Determination of the Profile Drag of an Airplane Wing in Flight at High Reynolds Numbers
This is a 1939 NASA technical report on measuring the profile drag of an airplane wing in flight at high Reynolds numbers, issued through the NASA Technical Reports Server for aeronautical engineers and researchers. The three photographs show aircraft wings and nacelles in close view, with rivet lines, panel joints, and smooth metal skin surfaces that a designer could use as references for streamlined aircraft surfaces and industrial machine detailing.
