儀表飛行術(shù)語 Instrument Flight Glossary

時間：2011-08-28 11:47來源：藍(lán)天飛行翻譯 作者：航空 點擊：次

Drag curve. The curve created when plotting induced drag and parasite drag.
DUATS. See direct user access terminal system.
Duplex. Transmitting on one frequency and receiving on a separate frequency.
Eddy currents. Current induced in a metal cup or disc when it is crossed by lines of .ux from a moving magnet.
EFAS. See En Route Flight Advisory Service.
EFC. See expect-further-clearance.
Electronic flight display (EFD). For the purpose of standardization, any flight instrument display that uses LCD or other image-producing system (Cathode Ray Tube [CRT], etc.)
Elevator illusion. The sensation of being in a climb or descent, caused by the kind of abrupt vertical accelerations that result from up- or downdrafts.
Emergency. A distress or urgent condition.
Emphasis error. The result of giving too much attention to a particular instrument during the cross-check, instead of relying on a combination of instruments necessary for attitude and performance information.
EM wave. Electromagnetic wave.
Encoding altimeter. A special type of pressure altimeter used to send a signal to the air traf.c controller on the ground, showing the pressure altitude the aircraft is . ying.
En route facilities ring. Depicted in the plan view of IAP charts, a circle which designates NAVAIDs, . xes, and intersections that are part of the en route low altitude airway structure.

En Route Flight Advisory Service (EFAS). An en route weather-only AFSS service.
En route high-altitude charts. Aeronautical charts for en route instrument navigation at or above 18,000 feet MSL.
En route low-altitude charts. Aeronautical charts for en route IFR navigation below 18,000 feet MSL.
Equivalent airspeed. Airspeed equivalent to CAS in standard atmosphere at sea level. As the airspeed and pressure altitude increase, the CAS becomes higher than it should be, and a correction for compression must be subtracted from the CAS.
Expect-further-clearance (EFC). The time a pilot can expect to receive clearance beyond a clearance limit.
FAA. Federal Aviation Administration.
FAF. See .nal approach . x.
False horizon. Inaccurate visual information for aligning the aircraft, caused by various natural and geometric formations that disorient the pilot from the actual horizon.
Federal airways. Class E airspace areas that extend upward from 1,200 feet to, but not including, 18,000 feet MSL, unless otherwise speci. ed.
Feeder facilities. Used by ATC to direct aircraft to intervening .xes between the en route structure and the initial approach . x.
Final approach. Part of an instrument approach procedure in which alignment and descent for landing are accomplished.
Final approach fix (FAF). The .x from which the IFR .nal approach to an airport is executed, and which identi. es the beginning of the .nal approach segment. An FAF is designated on government charts by a Maltese cross symbol for nonprecision approaches, and a lightning bolt symbol for precision approaches.

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