Performance Characteristics of Venturi Tubes Used in Aircraft for Operating Air-driven Gyroscopic Instruments
This 1937 NACA technical report, issued by the National Advisory Committee for Aeronautics, presents test measurements of venturi tubes that drive air-powered gyroscopic flight instruments in aircraft. The pictures are plain engineering graphs of airflow against airspeed and pressure, plus photographs of bare cast-metal venturi tubes, with a designer taking away a clean, technical look built from fine grid lines, dashed and solid curves, and dark machined forms.
