Investigation of an Electrically Heated Airplane Windshield for Ice Prevention, Special Report
This is a 1939 NACA special report from the NASA Technical Reports Server on testing an electrically heated airplane windshield to stop ice forming on it, written for aeronautical engineers and aircraft designers. The photographs show a man in a heavy jacket beside an iced-over car windshield and an aircraft-style pane in a wind tunnel, with a wiring diagram of the heater circuit. For a designer they offer plain engineering documentation of frost and ice on glass, useful as reference for period technical drawings, instrument panels and cold-weather vehicle subjects.
