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ASI (1)
- Usado para
- air speed indicator
- Definição1
- A primary cockpit or flight deck instrument which shows the pilot the speed of the aircraft in relation to the air around it.
- Fonte1
- MOSER, Reta C. Space-age acronyms: abbreviations and designations. 2d ed. New York: IFI/Plenum, 1969. 534 p. 308 p. : ill. ; 22 ISBN 0830610596 0830699406 ; 0830610
- Fonte2
- CROCKER, David. Dictionary of aviation. 2nd ed. London: A&C, 2005.
- Fonte3
- FEDERAL AVIATION ADMINISTRATION. Helicopter flying handbook (FAA-H8083-21A). Washington, DC: FAA, 2012.
- Fonte4
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Manual of aircraft accident and incident investigation. Part III: investigation. Montreal, 2011. (Doc. 9756 AN/965).
- Nota adicional1
- The position of the pitot tube and the attitude of an aircraft can affect the accuracy of the airspeed indicator.
- Contexto
- If too much airspeed is lost, a settling-with-power condition may result. Maintain the proper attitude during the approach, and make sure you keep some forward airspeed and movement until close to the ground. Outside visual reference for airspeed and rate of closure may not be available, especially when landing in an unlighted area, so pay special attention to the airspeed indicator.
- Whereas a decrease in altitude would result in a lower airspeed reading. If a leak occurs in the pitot line in a pressurized area, the airspeed indicator will show a higher airspeed than existing. The only case wherein a malfunction pitot-static system can cause an erroneous high airspeed is a leak in the pitot line in a pressurized area or a completely plugged pitot line and an increase in altitude. If only the pitot tube inlet is blocked, the airspeed normally bleeds off through the pitot tube moisture drain hole.
- Subárea1
- Flight Instruments