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venturi tube
- Sinônimos - Inglês
- venturi
- Definição1
- A short tube with a constricted throat used to determine fluid pressures and velocities by measurement of differential pressures generated at the throat as a fluid traverses the tube.
- Fonte1
- SPELLMAN, Frank R. The Handbook of Meteorology. Lanham, Maryland: Scarecrow Press, Inc., 2013. 237 p. ISBN 978-0-8108-8613-1.
- Definição2
- Duct for fluid flow which contracts to minimum cross-section at throat and then expands (usually to same area as inlet); pressure at throat falls to minimum value which can be used to drive vacuum instruments or as measure of airspeed; flow throughout always subsonic.
- Fonte2
- GUNSTON, Bill. The Cambridge aerospace dictionary. Cambridge: Cambridge University, 2004. (Cambridge aerospace series.)
- Fonte3
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Manual of aircraft accident and incident investigation. Part III: investigation. Montreal, 2011. (Doc. 9756 AN/965).
- Contexto
- The refrigeration phenomenon is the most serious of all factors causing carburetor ice in helicopters. The effect of fuel vaporization after the fuel is introduced in the air stream and decreasing air pressure in the venturi causes a sharp drop in temperature in the carburetor. Should the temperature within the carburetor decrease to freezing or below freezing, carburetor ice may form on internal surfaces, including the throttle valve.
- Subárea
- Aircraft Structure
- Français
- tube de Venturi