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仪表飞行术语 Instrument Flight Glossary

时间:2011-08-28 11:47来源:蓝天飞行翻译 作者:航空 点击:


Aneroid. The sensitive component in an altimeter or barometer that measures the absolute pressure of the air. It is a sealed, .at capsule made of thin disks of corrugated metal soldered together and evacuated by pumping all of the air out of it.
Aneroid barometer. An instrument that measures the absolute pressure of the atmosphere by balancing the weight of the air above it against the spring action of the aneroid.
Angle of attack. The acute angle formed between the chord line of an airfoil and the direction of the air striking the airfoil.
Anti-ice. Preventing the accumulation of ice on an aircraft structure via a system designed for that purpose.
Approach lighting system (ALS). Provides lights that will penetrate the atmosphere far enough from touchdown to give directional, distance, and glide path information for safe transition from instrument to visual . ight.
Area chart. Part of the low-altitude en route chart series, this chart furnishes terminal data at a larger scale for congested areas.
Area navigation (RNAV). Allows a pilot to . y a selected course to a predetermined point without the need to over. y ground-based navigation facilities, by using waypoints.
ARSR. See air route surveillance radar.
ARTCC. See air route traf.c control center.
ASDE. See airport surface detection equipment.
ASOS. See automated surface observing station.
ASR. See airport surveillance radar.
ATC. Air Traf. c Control.

ATCRBS. See air traffic control radar beacon system.
ATIS. See automatic terminal information service.

Atmospheric propagation delay. A bending of the electromagnetic (EM) wave from the satellite that creates an error in the GPS system.
Attitude and heading reference systems (AHRS). System composed of three-axis sensors that provide heading, attitude, and yaw information for aircraft. AHRS are designed to replace traditional mechanical gyroscopic flight instruments and provide superior reliability and accuracy.
Attitude director indicator (ADI). An aircraft attitude indicator that incorporates .ight command bars to provide pitch and roll commands.
Attitude indicator. The foundation for all instrument . ight, this instrument re.ects the airplane’s attitude in relation to the horizon.
Attitude instrument flying. Controlling the aircraft by reference to the instruments rather than by outside visual cues.
Autokinesis. Nighttime visual illusion that a stationary light is moving, which becomes apparent after several seconds of staring at the light.

Automated Weather Observing System (AWOS).
Automated weather reporting system consisting of various sensors, a processor, a computer-generated voice subsystem, and a transmitter to broadcast weather data.
Automated Surface Observing Station (ASOS). Weather reporting system which provides surface observations every minute via digitized voice broadcasts and printed reports.
Automatic dependent surveillance–broadcast (ADS-B). A device used in aircraft that repeatedly broadcasts a message that includes position (such as latitude, longitude, and altitude), velocity, and possibly other information.

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