AJ MacLeod wrote: >On Thursday 22 February 2007 13:28, John Denker wrote: > > >>Solving this problem is easy: >> >> > >I'd say so too... for "exact" values rather which don't rely on modelled >instrumentation can't one just use the values provided under "/position" in >the property tree? > > > That would give you position in inertial space, but aircraft have to fly on pressure levels to maintain desired altitudes and/or flight levels. Which also needs to be adjusted with the Kollsman setting for reference to sea level.
Even the most advanced avionics/inertial systems still rely on this use of air pressure to define aircraft altitude. Just that air data computers can correct for things like installation errors, lags, and such. Thanks John for your info and help Regards John W. ------------------------------------------------------------------------- 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
