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Aircraft 2 TDF Exam 1

Terms in this set (52)

ACARS
Aircraft communication addressing and reporting system
Aplhanumeric symbols
symbols made up of all the letters in our alphabet, numerals, punctuation marks and certain other special symbols
Antenna
A special device used with electronic communication and navigation systems to radiate and receive electromagnetic energy
Area mics.
The "hot" microphones in the aircraft cockpit, which are not required to be keyed
ARINC (Areonautical Radio incorporated)
A corporation whose principal stockholders are the airlines
Avionics
The branch of technology that deals with the design, production, installation, use, and servicing of electronic equipment mounted in aircraft
Back Course
The reciprocal of the localizer course for an ILS
BITE
Built-In test equipment
Cathode-ray tube
A display tube used for oscilloscope and computer video displays
CDI
Course deviation indicator
Coaxial cable
A special type of electrical cable that consists of a central conductor held rigidly in the center of a braided outer conductor, coaxial cable, or coax, as it is normally called, is used for attaching radio receivers and transmitters to their antenna
Cospass-Sarsat
An international search and rescue system that uses satellites to detect and locate emergency beacon carried by ships, aircraft or individuals. the system consists of a network of satellites ground stations mission control centers and rescue coordination centers
Data bus
A wire or group of wires that are used to move data within a computer system
Dedicated computer
A small digital computer, often built into an instrument or control device that contains a built-in program that causes it to perform a specific function
Dipole antenna
A straight-wire, half wavelength, center-fed radio antenna. The length of each of the two arms is approximately one fourth of the wavelength of the center frequency for which the antenna is designed
DME
Distance measuring equipment
EADI
Electronic Attitude Director Indicator
ECAM
Electronic centralized aircraft monitor
EFIS
Electronic Flight Instrument System
EHSI
Electronic horizontal situation indicator
EICAS
Engine Indication and Crew Alerting System
ELT
A self-contained radio transmitter that automatically begins transmitting on the emergency frequencies any time it is triggered by a severe impact parallel to the longitudinal axis of the aircraft
FMC
Flight management computer
Geosynchronous Satellite
A satellite whose orbital track over the earth repeats itself regularly
Glass cockpit
An aircraft instrument system that uses a few cathode-ray-tube displays to replace a large number of mechanically actuated instruments
Glide slope
The portion of an instrument landing system that provides the vertical path along which an aircraft descends on an instrument landing
Goniometer
Electronic circuity in an ADF system that uses the output of a fixed loop antenna to sense the angle between a fixed reference, usually the nose of the aircraft, and the direction from which the radio signal is being received
Hyperbolic navigation
Electronic navigation systems that determine aircraft location by the time difference between the reception of two signals
Key
To initiate an action by depressing a key or a button
Left-right indicator
The course-deviation indicator used with a VOR navigation system
Localizer
The portion of an ILS that directs the pilot along the center line of the instrument runway
LORAN C
The LORAN system used in aircraft it operates on a frequency of 100 kHZ
LRU
Line replaceable unit
Magnetic bearing
The direction to or from a radio transmitting station measured relative to magnetic north MFD
Noise (electrical)
An unwanted electrical signal within a piece of electronic equipment
Non directional Beacon NDB
A LF/MF radio beacon transmitting nondirectional signals. when a NDB is installed in conjunction with an ILS marker, it is called a compass locator
PPI (plan position indicator)
A type of radar scope that shows both the direction and distance of the target from the radar antenna. some radar antenna rotate and their PPI scopes are circular
Pressure altitude
The altitude in standard air at which the pressure is the same as the existing altitude. The pressure altitude furnished to the transponder is independent of the indication on the pilot's altimeter
Radial
A directional line radiating outward from a radio facility, usually a VOR
RMI
Radio Magnetic Indicator
Selectivity
The ability of a radio receiver to separate desired signals from unwanted signals
Sensitivity
A measure of the signal strength needed to produce a distortion free output
Signal-to-noise ratio
The ratio of the power of the received signal to the power of the noise that is interfering with the signal
Skip distance
The distance from a radio transmitting antenna to the point on the surface of the earth the reflected sky wave first touches after it has bounced off the ionosphere
Static discharges
Devices connected to the trailing edges of control surfaces to discharge static electricity harmlessly into the air
Superheterodyne circuit
A sensitive radio receiver circuit in which a local oscillator produces a frequency that is a specific difference from the received signal frequency
TACAN
A radio navigation facility used by military aircraft for both direction and distance information
Terminal VOR
A low-powered VOR that is normally located on an airport
VHF
Very High Frequency
VOR
Very High omni range navigation
VORTAC
an electronic navigation system that contains both a VOR and a TACAN facility
Way point
A phantom location created in certain electronic navigation systems by measuring direction and distance from a VORTAC station or by latitude and longitude coordinates from loran or GPS
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