Full Scale Investigation of the Drag of a Wing Radiator
A 1929 NACA technical note by NASA's Technical Reports Server records, prepared for aeronautical engineers, a full-scale wind tunnel study of drag on a wing-mounted radiator. The plates are plain engineering graphs of lift and drag coefficients against angle of attack, plus photographs of the test wing and its radiator. A designer could take from them the clean, functional look of early technical line charts and the sheet-metal fin rhythm of the radiator.
