Nick Warne wrote: > On Friday 06 April 2007 14:00:14 AJ MacLeod wrote: > > > The tanker in refueling_demo doesn't have TACAN at all. In fact, I > > think we have a bit of needless duplication with those > demos, and one > > of them could be removed without too much pain... > > OK, Csaba found the bug I was seeing, and he fixed it, so no > doubt a fix is on > the way soon - I am so pleased, I thought I was going mad. > Thanks Csaba!!! > > > As to the refueling_demo.xml. I think this should stay, as > it can be used for > you own tanker scenerio. I was testing over FHAW (Ascention > Island) and > tweaked the file so that it used TACAN also: > > <entry> > <callsign>ESSO1</callsign> > <TACAN-channel-ID>040X</TACAN-channel-ID> > <type>aircraft</type> > <class>tanker</class> > <model>Models/Geometry/KC135/KC135.xml</model> > <!-- <latitude>37.61633</latitude> > <longitude>-122.38334</longitude> --> > <latitude>-7.974748</latitude> > <longitude>-14.382520</longitude> > <altitude>3000</altitude> > <heading>020</heading> > <speed>280</speed> > <roll>-15</roll> > </entry> > > > It is very handy to have around. > I'm sure you have spotted it by now - the TACAN code in C++ relates the aircraft or carrier callsign to the assigned TACAN frequency (not channel). The tag <TACAN-channel-ID> is for display purposes only so that if you open the property browser you can quickly identify the assigned channel. So, provided the mobile unit has one of the pre-assigned callsigns, it will also have the pre-assigned TACAN frequency, no matter if the tag is present or correct. For example:
12 999 999 0 11030 0.000 ES1 ESSO1 TACAN The reason for this is historical - the nav.dat data file only contains TACAN frequency for fixed sites, and not TACAN channel. The file carrier_nav.dat is simply an extension of that file for mobile units. Just to make this clear - the tag <TACAN-channel-ID> has no effect on the actual TACAN channel/frequency of a mobile unit - tag <callsign> determines that. Vivian ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
