View Full Version : Great Circle Formula
what is the right formula to get the great circle distance in NM ?
sycamore
16th Apr 2004, 18:58
Try; www.williams.best.vwh.net...............
126.9
16th Apr 2004, 23:20
I did.
The page cannot be displayed
:}
TheNightOwl
17th Apr 2004, 00:38
Lime - try www.pilotsweb.com, it looks as if it may be helpful.
Sorry, but I don't know how to post the url as a direct link.
Hope it is of use,
Kind regards,
TheNightOwl.:ok:
john_tullamarine
17th Apr 2004, 02:32
Useful trick to know ....
(a) copy the URL from your browser
(b) type .. as I don't know how to fool the parser I have used text rather than the character [ in the explanations below ...
(open square bracket)url= ... then paste the URL ... ]text[/url]
This presents "text" in the post as a hyperlink to the URL
For example, to hyperlink to the PPRuNe homepage, type in
"(open square bracket)url=http://www.pprune.org]PPRuNe Homepage[/url]"
will give you the following post display ..
PPRuNe Homepage (http://www.pprune.org)
which the reader can click to hyperlink to the home page.
TheNightOwl
17th Apr 2004, 06:51
Many thanks, John_T, I'll make a note of the method. Hopefully, Lime has found his information.
Kind regards,
TheNightOwl.:ok:
dusk2dawn
17th Apr 2004, 07:02
Williams pages (http://williams.best.vwh.net/) are up and running !
EFP058
18th Apr 2004, 01:21
You might also be interested in the "Great Circle Mapper", a free utility to be found here: http://gc.kls2.com/
Just enter any two locations (IATA or ICAO codes) in the left text box titled "Paths" and click on "Display Map".
If you would like to know the distance between Duesseldorf, Germany and Manchester, UK for example, you would enter "EDDL-EGCC", and it will show you the Great Circle Route between these two airports, their location (51°17'22"N 06°46'00"E and 53°21'13"N 02°16'30"W respectively, in case youīre interested... :p) as well as the distance, 355nm in this case.
You can play with all kinds of neat variables. You can specify a certain ground speed for example and let it calculate your flight time based on this speed, or you can enter ETOPS restrictions and have them displayed on the map and so on and so on.
Itīs a great tool, and lots of fun actually. Just donīt use it to actually plan a flight... ;)