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PAR instrument: Difference between revisions
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(see [[Howto:Implementing_a_simple_GCA_system]]) | (see [[Howto:Implementing_a_simple_GCA_system]]) | ||
= Background = | = Background = | ||
{{FGCquote | |||
|Is there any work on GCA (ground controlled approach) in progress, or have missed it? GCA is surprisingly accurate and easy to use, both as a pilot and a controller. |{{cite web |url=http://forum.flightgear.org/viewtopic.php?p=193941#p193941 | |||
|title=<nowiki>Re: Spoken ATC</nowiki> | |||
|author=<nowiki>Alant</nowiki> | |||
|date=<nowiki>Sun Ago 13</nowiki> | |||
}} | |||
}} | |||
= What GCA is = | |||
* https://secretsofcoldwarradar.omeka.net/exhibits/show/cold-war-radar-technology/radar-equipment/ground-controlled-approach-and | |||
* https://aroundthepattern.com/training/ground-controlled-approaches-gca/ | |||
* https://en.wikipedia.org/wiki/Ground-controlled_approach | |||
* http://www.rquirk.com/cdnradar/cor/chapter21.pdf | |||
= What can you expect from GCA = | |||
[[File:Gca1.png|left|thumb|Horizontal trajectory when pilot follows GCA instructions]]Arriving in the vicinity of the airport with little or no visibility, the pilot can request the GCA service. | |||
The Controller, assisted by a PAR (''Precision Approach Radar''), will guide you through a safe path (both in heading and in altitude) that will take you to the head of the used runway.[[File:Gca2.png|center|thumb|Vertical trajectory when pilot follows GCA instructions]]<br /> | |||
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= How to install = | |||
{{note | This is the latest version (Feb 22, 2018)<br /> | |||
<!--Latest modifications:<br /> | |||
* plot2D helpers available. | |||
* {{key press|Track}} button at PAR screen chooses which aircraft must be tracked. | |||
* PAR screen shows local traffic. | |||
* {{key press|RWY}}, {{key press|FLIP}} and {{key press|+}} {{key press|-}} zoom buttons at PAR screen. | |||
}}--> | |||
If your FGFS version accepts [[Addons]], you can download this feature from the [https://sourceforge.net/p/flightgear/fgaddon/HEAD/tree/trunk/Addons/PAR/ Addons Repository]. Download all the 12 files into the directory of your choice.<br /> | |||
Launch FlightGear including --addon argument, eg.: | |||
<syntaxhighlight> | |||
fgfs <usual args> --addon=/path/to/PARaddon/</syntaxhighlight> | |||
{{note | From version 2017.4.0, the FG launcher accepts the ''--addon'' option in his ''Settings/Additional Settings'' tab.<br />}} | |||
Otherwise, you can install it as a submodule. Contact the author for further instructions. | |||
And that's all !<br /> | |||
= How to use it = | |||