Difference between revisions of "VOR/CDI"

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[[File:qwerty.jpg|caption|left]]The VOR instrument uses GPS data to display the bearing to a waypoint.
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[[File:qwerty.jpg|caption|left|250px]]The VOR instrument uses GPS data to display the bearing to a waypoint.
 
The top part is an emulated VOR indicator. The white needle (CDI, Course deviation indicator) will display the current deviation up to +/- 12 degrees relative to the selected radial to or from the course to the selected waypoint.
 
The top part is an emulated VOR indicator. The white needle (CDI, Course deviation indicator) will display the current deviation up to +/- 12 degrees relative to the selected radial to or from the course to the selected waypoint.
 
Course and radial selection is done by touching and swiping gesture up or down on the left or right of the compass ring.
 
Course and radial selection is done by touching and swiping gesture up or down on the left or right of the compass ring.
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disclosure button on the bottom part of the instrument. Please read <u>[[Select a waypoint from the database|«Selecting waypoints from the database»]]</u> to get information about waypoint search and selection.
 
disclosure button on the bottom part of the instrument. Please read <u>[[Select a waypoint from the database|«Selecting waypoints from the database»]]</u> to get information about waypoint search and selection.
  
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[[File:danger.jpg|caption|left]]A '''“NAV” warning flag''' will let you know that you should '''NOT''' trust the VOR indicator in the following cases:
 
[[File:danger.jpg|caption|left]]A '''“NAV” warning flag''' will let you know that you should '''NOT''' trust the VOR indicator in the following cases:
* <span style="color:#0000ff">'''No waypoint'''</span> is selected for the instrument;
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* '''No waypoint''' is selected for the instrument;
* The waypoint distance is <span style="color:#0000ff">'''over 250 nautical miles'''</span>;
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* The waypoint distance is '''over 250 nautical miles''';
* The <span style="color:#0000ff">'''GPS accuracy'''</span> is less than 2.5 nautical miles;
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* The '''GPS accuracy''' is less than 2.5 nautical miles.
  
  
<span style="color:#0000ff">'''Note 1:'''</span> you don’t need Ground speed to get accurate information on this instrument.
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<u>'''Note 1:'''</u> you don’t need Ground speed to get accurate information on this instrument.
  
<span style="color:#0000ff">'''Note 2:'''</span> remember that you will ONLY find the spinball at the bottom of the instrument on iPhone/iPod Touch devices.
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<u>'''Note 2:'''</u> remember that you will ONLY find the spinball at the bottom of the instrument on iPhone/iPod Touch devices.
 
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Back to <u>[[Air Navigation iOS|index]]</u>
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Back to <u>[[Instruments|previous page.]]</u>
 
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Latest revision as of 19:36, 10 March 2016

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caption
The VOR instrument uses GPS data to display the bearing to a waypoint.

The top part is an emulated VOR indicator. The white needle (CDI, Course deviation indicator) will display the current deviation up to +/- 12 degrees relative to the selected radial to or from the course to the selected waypoint. Course and radial selection is done by touching and swiping gesture up or down on the left or right of the compass ring. Below the main indicator the name of the currently selected waypoint is displayed as well as distance from the waypoint (great circle) and GPS accuracy. You can use any kind of waypoint (Airports, VOR, NDB, etc) with the VOR instrument (whereas a real life VOR indicator requires radio signals from VOR, VOR/DME or VORTAC transmitters). You can select a new waypoint from the database with the the blue disclosure button on the bottom part of the instrument. Please read «Selecting waypoints from the database» to get information about waypoint search and selection.

A “NAV” warning flag will let you know that you should NOT trust the VOR indicator in the following cases:
  • No waypoint is selected for the instrument;
  • The waypoint distance is over 250 nautical miles;
  • The GPS accuracy is less than 2.5 nautical miles.


Note 1: you don’t need Ground speed to get accurate information on this instrument.

Note 2: remember that you will ONLY find the spinball at the bottom of the instrument on iPhone/iPod Touch devices.



Back to previous page.