Another migration strategy:

According to preliminary indications, if we go into
heading_indicator_fg.cxx and declare that "DG" is slang
and should be replaced by "hsi" on general principles,
then all but three of the aircraft can be migrated to
the new hsi.xml with no per-aircraft fiddling.  The only
aircraft that would require "flag day" fiddling are the
three that already provide power to the so-called "DG",
namely Spitfire, E3B, and KC135 ... unless I'm overlooking
something somewhere.

Of course the same applies to heading_indicator_dg.cxx.

New and improved patches:
   http://www.av8n.com/fly/fgfs/hsi-etc.diff

On 01/31/2007 04:03 PM, Torsten Dreyer wrote:
 >>    /instrumentation/heading-indicator-fg/indicated-heading-deg
 > sounds plausible

:-)

 > though the HeadingIndicatorFG lacks some realism, too. It has
 > no way to fail the flux gate or manually switch from slave to free mode and
 > use a manual adjust.

Those would be good things to put on the creeping features
list.

In the same vein, all the instruments in this family are
lacking in realism as to the way they come /out/ of failure.
They just miraculously hop to the ideal heading.  A real
instrument would take many seconds to grind its way over
to the ideal heading.

Also on the list:  It would be nice to have a convenient
way to fail the glideslope signal without necessarily failing
the localizer at the same time.  This would be plenty realistic.

In any case, let's keep our perspective here:  especially in
the context of procedures training, almost /any/ failure mode
is a huge improvement over /no/ failure mode, which is what
the hsi has had until now.


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