A couple of evenings ago, while playing around with the SenecaII at my home airport (EGPF), I noticed a small, but annoying discrepancy between the magnetic compass and the runway heading. Having had a look at how the slaved directional gyro in the Seneca works, it dawned on me that I had no idea how the magnetic compass works in FG. A little rooting around led me to simgear/magvar/coremag.?xx and the wonderful world of "The World Magnetic Model" http://www.ngdc.noaa.gov/geomag/WMM/DoDWMM.shtml
Now the comments at the beginning of coremag.cxx imply that the module originally implemented wmm2000 and was updated by Wim Van Hoydonck (wim.van.hoydo...@gmail.com) to wmm2005. The current version is now wmm2010, and I wonder if simgear has been updated to reflect this? Could this account for my heading discrepancy at EGPF? Alasdair ------------------------------------------------------------------------------ Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the endpoint security space. For insight on selecting the right partner to tackle endpoint security challenges, access the full report. http://p.sf.net/sfu/symantec-dev2dev _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
