An instrument used to measure the airspeed on many early low-speed airplanes, principally during 1919 to 1930 , was the venturi tube. This simple device is a convergent-divergent duct. (The front section's cross-sectional area A decreases in the flow direction, and the back section's cross-sectional area increases in the flow direction. Somewhere between the inlet and exit of the duct, there is a minimum area called the throat.) See figure below. Let A1 and A2 denote the inlet and throat areas,
numerade.com
An instrument used to measure the airspeed on many early low-speed airplanes, principally during 1919 to 1930 , was the venturi tube. This simple device is a convergent-divergent
An instrument used to measure the airspeed on many early low-speed airplanes, principally during 1919 to 1930 , was the venturi tube. This simple device is a convergent-divergent duct. (The front section's cross-sectional area A decreases in the flow direction, and the back section's cross-sectional area increases in the flow direction ...
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