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From: llh@midacs.UUCP (Linn Hower)
Newsgroups: net.aviation
Subject: Wanted: great circle nav programs.
Message-ID: <176@midacs.UUCP>
Date: Fri, 23-Aug-85 19:25:52 EDT
Article-I.D.: midacs.176
Posted: Fri Aug 23 19:25:52 1985
Date-Received: Sun, 25-Aug-85 02:08:05 EDT
Distribution: net
Organization: EG&G Idaho Inc., Idaho Falls
Lines: 22


I now have an oportunity to get some right seat time in a Cessna
Conquest.  I was amaised to find out how dumb the expensive RNAV
computer was that is on board. It does'nt do any great circle calculations,
just straight from waypoint to waypoint.

Does anyone have any software (for un*x or hp 11c calculator) that will
allow me to do something like the following:

	give starting lat/long
	give destination lat/long
	give number of waypoints to plot along the great circle route

	get lat/long for waypoints 1 to n

With the lat/long of the waypoints I could program the RNAV to approximate
this great circle route.

If not code, do you have any pointers to the algorithms???
-- 
Linn Hower	Phone: 208-526-9353
   ...!ucbvax!ucdavis!midacs!isew02!linn