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Howto:Implementing a simple GCA system: Difference between revisions
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Howto:Implementing a simple GCA system (view source)
Revision as of 20:16, 13 September 2017
, 13 September 2017→Visualizing the Approach
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[[File:Openvg-via-canvas.png|thumb|screen shot showing a simple Canvas GUI dialog demonstrating how to use OpenVG-path drawing via Nasal and Canvas]] | [[File:Openvg-via-canvas.png|thumb|screen shot showing a simple Canvas GUI dialog demonstrating how to use OpenVG-path drawing via Nasal and Canvas]] | ||
[[File:PAR-display-rleibner.png|thumb|modifications as follows:Once into the area, the controller directs a perpendicular path to the app course.At 1.5 nm from app course,'' "Make half standard rate turns. Turn <left/right> heading <toRwyHdg>".''A few seconds latter ''"Approaching glidepath. Begin descent. "''A bit of math to substantiate that:A 90 deg half standard turn takes 60 secs = 0.017 hAt some 110 kts IAS results an arc of 110 x 0.017 = 1.87 nmSuch arc is rxPI/ 2 thus r = 2 x 1.87 / PI = 1.2 nm.Adding some secs to configure attitude, we have 1.5 nm.<ref>{{cite web |url = https://forum.flightgear.org/viewtopic.php?p=318657#p318657 |title = <nowiki> Re: Spoken </nowiki> |author = <nowiki> rleibner </nowiki> |date = Sep 11th, 2017 |added = Sep 11th, 2017 |script_version = 0.40 }}</ref>]] | |||
Once we have a basic GCAController class working and a corresponding UI to easily set up the GCA, it seems to make sense to explore having a UI to monitor the ongoing approach by plotting a vertical and a horizontal view of the profile flown. | Once we have a basic GCAController class working and a corresponding UI to easily set up the GCA, it seems to make sense to explore having a UI to monitor the ongoing approach by plotting a vertical and a horizontal view of the profile flown. | ||