Workings of a VOR

[Three Blades]

Can anybody direct me to a suitably technical piece that explains the working of a VOR.
I am not looking for information on how to use them but on how they work.
I have tried a search here and Google but to no avail.
Thanks
TB

[Chilli Monster]

Theres an Australian document HERE (http://www.casa.gov.au/pilots/download/VOR.pdf) that gives the basics - but that's the best I could find I'm afraid.

[Three Blades]

Thanks Chilli Monster,
The bit I am looking for more detail on is how they transmit the variable phase angle rotating field.
TB

[Foxbat01]

Try Here (http://en.wikipedia.org/wiki/VHF_Omni_Range)
from Wikipedia

[SoftTop]

Then there's Doppler (DVOR) versus Conventional (CVOR) :E

ST

[av8boy]

I've recently been working on a web page (still not done!) on this very subject. I've thrown together some notes and posted them here (http://www.atcmuseum.org/museum/navigation/nav_sis/VOR_Notes.pdf) as an Acrobat file for your viewing pleasure. Note that they're dated, disjointed, and cluttered, but they may be a place to start. If you need more let me know and I'll see what I can post. I've got a lot of material but I don't want to upload it if it won't be useful to you.

But, bottom line... near as I can tell, a VOR is a bowling pin with 361 light bulbs inside. Something to do with that and the cosine of an Alford loop array flying out of your azimuth whenever your goniometer spins... :)

Dave


No, not your "groiniometer," Jerricho...

[Three Blades]

Thanks Foxbat01 & av8boy, that was what I was after. :ok:

The moral of this story is don't ask a question for which you are not prepared for the answer !
alford loops, goniometer, suppressed carrier modulation etc
Time to dust off the old notes from university time.:ugh:

TB

[Dances with Boffins]

Just don't go building one in yer back garden, please. We've all got kinda used to where they all are, and an extra one may cause a bit of confusion.:rolleyes:

[cieloitaliano]

You may find this site interesting:
http://www.trevord.com/navaids/index.htm :ok: