The Reduction in Drag of a Forward-sloping Windshield
This is a 1933 NACA technical report, issued by the National Advisory Committee for Aeronautics, on how a forward-sloping windshield reduces aircraft drag. Its figures are line graphs of wing and fuselage tests and photographs of windshield models, written for aeronautical engineers. The pictures show streamlined airflow and bodies with clean silhouettes, which a designer could use for diagrams of smooth, low-resistance forms.
