lecture leading cadet training airmanship 2 2 air traffic control communications
TRANSCRIPT
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Lecture
Leading Cadet Training
Airmanship 2
2
Air Traffic ControlCommunications
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The control of air traffic greatly depends upon good communications; both ground-to-ground and ground-to-air.
Introduction
Swift, accurate contact is achieved by the use of:
Special Telephones
Tele-Talk Systems
Radio Telephony (RT)
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Communications
Telephone The tower will most likely have its own switchboard to make calls.
Tele-Talk The tower will most likely have a tele-talk system for direct contact with vital offices and sections on the airfield.
Radio The main communication method is by radio (RT), on VHF or UHF bands.
Each airfield has its own frequencies for airfield and approach control.
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Visual Communications
Information and instructions can becommunicated visually by:
Active means,
such as signal lamps
Passive means,
through the use of ground markings and signs.
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Visual Communications
Active Signalling
Light signal colours and their meanings
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Passive Signalling
Identified by a three sided solid,mounted on a pole and set in a round base.
Stationary Object Hazards
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Passive Signalling
Bad Ground MarkersUsed at airfields when taxiing on the grass.A WHITE CANVAS
“V” marker with a red band
A striped solid, alternating
yellow and black every 0.2m
A Yellow flag or square, on a light stake (sides of square approx. 0.61 m).
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Helicopter Operating Areas
Helicopter operating area marker
Identifiable by white “H”,
4 metres high,
with a 2 metre crosspiece.
Normally well clear of fixed
wing operations.
May be further highlighted
by the use of edging round
the landing area.
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Communication Aids
Navigation Aids: designed to help fly safely betweenairfields and on operational tasks.
Airfield Approach Aid: guides an aircraft down to a point in the vicinity of the airfield.
Runway Approach Aid: guides the aircraft downto a position on the correct approach near to the touch-down point on the runway in use.
Enable pilots to take off and land almost regardless of the prevailing weather conditions.
There are many forms of radio and radar:
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Radio Aids
The two main Radio Aids likely to be seen at Royal Air Force airfields are:
Digital Resolution Direction Finding (DRDF)
Instrument Landing System (ILS)
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DRDF
This is a common airfield approach aid.
It receives a transmission and displays it on a screen as a green line called a “trace”.
Enables the approach controller to tell the pilot what course to fly to reach the airfield.
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DRDFControllers can direct aircraft to a point above
the airfield and from there Control its Descent Through Cloud (CDTC)
to a height and position on the approach from which the pilot can either
land visually or employ a runway approach aid.
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Instrument Landing System
ILS is a runway approach aid where fixed ground transmitters
send out a special pattern of radio signals which define a radio beam,
so aircraft are guided to the touch-down point.
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Instrument Landing System
ILS transmits 2 frequencies
90Hz (aircraft is too high)
150Hz (aircraft is too low)
No noise = Good glide path
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RADAR
Stands for (RAdio Detection And Ranging)
Consists of a Transmitter and a Receiver.
A short pulse of energy is transmitted from an
aerial and the receiver “listens” for an echo.
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RADAR
The receiver detects reflections from aircraft,
and can determine their position,
direction of travel and speed.
This information is then displayed through a
cathode ray tube onto a screen.
In this way radar has become the
“eyes” of the air traffic control.
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Surveillance Radar
Radar Aids.
The two main radar aids likely to be seen atRoyal Air Force airfields are:
Precision Approach Radar (PAR)
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Surveillance RadarUsed both to monitor air traffic passing through
an area and as an airfield approach aid.
Enables the controller to locate the aircraft and to direct it to a position and height
near the airfield.
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Precision Approach Radar
PAR 2000 is the RAF’s main Precision Approach Radar.
The radar aerialand cabin are located
near the runway.
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Precision Approach Radar
The controller has two screens,one for the azimuth (left and right)
and one for elevation (height).
Both screens relate to the aircraft approach path.
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Precision Approach Radar
The controller passes instructions by RT to the pilot to guide the aircraft down the correct
glide slope towards the touch-down point.
This is called a Ground Controlled Approach(GCA).
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What are the three main communication aidswithin Air Traffic Control?
Telephone, E-Mail, Tele-Talk
Telephone, E-Mail, Talk-Talk
Telephone, Semaphore, Radio
Telephone, Tele-Talk, Radio
Check Understanding
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What would be used to indicate a stationary object that constitutes a hazard?
A white ‘V’ marker with a red band
A yellow flag or square
A striped yellow and black marker
A three sided solid on a pole.
Check Understanding
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What does
a Yellow and Black striped solid object signify?
A hazardous stationary object
Bad ground
A helicopter landing area
Closed taxiway
Check Understanding
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What doesa yellow flag or square signify?
Check Understanding
A hazardous stationary object
Bad ground
A helicopter landing area
Closed taxiway
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How are helicopter landing areas identified?
With a yellow ‘H’
With a white ‘H’
With a yellow ‘Z’
With a white ‘Z’
Check Understanding
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The two main Radio Aids likely to be seen at Royal Air Force airfields are:
Tele-Talk and ILS
DFTS and ILS.
Telephone and ILS.
DRDF and ILS.
Check Understanding
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What does ILS stand for?
International Landing System
Inertial Landing System
Independent Landing System
Instrument Landing System
Check Understanding
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What does the abbreviation RADAR stand for?
Rapid Detection and Ranging
Radio Detection and Reporting
Rapid Detection and Reporting
Radio Detection and Ranging
Check Understanding
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What does the abbreviation PAR stand for?
Precise Approach Radio
Precision Approach Radar
Precise Application Radar
Precision Application Radio
Check Understanding
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PAR is one of the main radar aids likely to be seen at Royal Air Force airfields.
What is the other ?
Check Understanding
Precision Radar
Surveillance Radar
Subjective Radar
Suspended Radar
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Leading Cadet Training
Airmanship 2
End of Presentation