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Avionics > Radio Navigation > Flashcards

Radio Navigation Flashcards

1
Q

VOR stands for?

A

(Very High frequency Omni-directional Range)

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2
Q

VOR perates in VHF range on frequencies _______________ to ___________

A

108.00Mhz – 117.95Mhz

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3
Q

____________ transmits radio beams or radials outward in every direction.

A

VOR ground station

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4
Q

VOR Station transmits infinite numbers of radials, since VOR is considered to be accurate to within 1 degree, __________ are used.

A

360 radials

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5
Q

VOR and their radials are depicted on sectional charts with circles, graduated in degrees called ____________.

A

compass roses.

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6
Q

Symbols of Different Kinds of VOR
(CHECK SA PPT)

A

VOR, VORTAC, VOR/DME

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7
Q

Used by military aircrafts to give the pilot both distance and direction from the ——— station on the ground.

A

TACAN (Tactical Air Navigation )

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8
Q

TACAN operates in ______ frequencies

A

Ultra High Frequencies

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9
Q

A collocated VOR and military navigation aid.

A

VORTAC

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10
Q

The equipment used in civilian aircraft and is A pulse type navigation system that shows the pilot, by an instrument panel indication, the number of nautical miles(NM), between the aircraft and ground station.

A

DME ( Distance measuring Equipment)

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11
Q

Airborne Equipments

A
  1. VOR Antenna
  2. Receiver
    3A. VOR Indicator
    3B. DME (Distance Measuring Equipment)
    3C. ADF (Automatic Directional Finder)
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12
Q

Parts of VOR Indicator:
– Needle indicates whether you are on your selected course.

A

CDI (Course Deviation Indicator)

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13
Q

Parts of VOR Indicator:
– Indicates whether your selected course will take you to or from the station

A

TO-FROM Indicator

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14
Q

Parts of VOR Indicator:
– Used to choose a course or radial by setting it next to the course index.

A

OBS (Omni Bearing Selector)

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15
Q

Parts of VOR Indicator:
– Where your selected course is placed

A

Course Index

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16
Q

Parts of VOR Indicator:
– The reciprocal or the 180 degrees of the course index.

A

Reciprocal Course Heading

17
Q

Parts of VOR Indicator:
– Shows you how far you are of course with 2 degree each dot.

A

Course Deviation Scale

18
Q

Provides Distance information in nautical miles and measures _________.

A

DME (Distance Measuring Equipment), slant range error

19
Q

Slant range error is greatest when you are at a ________.

A

high altitude and close to the station

20
Q

The airborne DME equipment consist of a ______ and ________.

A

transceiver and “shark fin” antenna

21
Q

An airplane’s ___________ uses frequencies from 1,025 to 1,150MHz.

A

DME interrogator

22
Q

A ground based station for the ADF that transmits on a given frequency in low to medium frequency band between 190 - 1750 khz

A

NDB (Non-Directional Beacon)

23
Q

The NDB Advantages are Does not rely on __________ principle and travels on curvature of the earth.

A

line of sight,

24
Q

NDB Disadvantages:
The ___________ Effect Causes needle of the ADF to be deflected towards a nearby electric storm.

A

Thunderstorm Effect

25
Q

NDB Disadvantages:
The ___________ Effect: NDB signals are refracted by the ionosphere returning to earth as a strong sky wave causing interference with normal NDB signals, resulting to a fading signal.
.

A

Twilight Effect

26
Q

NDB Disadvantages:
NDB transmitting on similar frequencies and is Significant at night

A

Interference from other NDB station

27
Q

NDB Disadvantages:
The ___________ Effect: NDB signal are reflected by the metals present in the ______

A

mountain effect

28
Q

NDB Disadvantages:
The ___________ Effect: NDB signal bending slightly toward the coastline when crossing at an angle.

A

Coastal effect

29
Q

The airborne partner of the Non Directional Beacon and Operates on radio compass principle whereby the ADF needle always points towards the NDB station

A

ADF (Automatic Directional Finder)

30
Q

the ADF Receiver Antenna System
Receives the radio signals in the low to medium frequency band of ___________

A

190 Khz. to 1750 Khz.

31
Q

A Type of ADF Indicator in which 0° is always straight up the nose of the aircraft

*Magnetic Bearing = Relative Bearing + Magnetic Heading

A

Fixed Card

32
Q

A Type of ADF Indicator in which The pilot can rotate the compass card with heading knob.

A

Rotatable Card

Avionics (6 decks)

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