Hi Michail,
the navradio code uses the magnetic variation as stored in nav.dat for
the VOR.
The environmental magnetic variation is not used for the VOR.
The installed offset between magnetic and true north of the signal
emitted by the VOR is published in the local AIP, so yes: we have to
adjust nav.dat from time to time.
HTH, Torsten
Am 05.08.2013 10:38, schrieb ?????? ????????:
Let me ask my question here. In nav.dat file VORs have slave
variation. As I understand, slave variation of VOR depends on magnetic
variation at he location. Does Flightgear use this slave variation, or
it computes magnetic variation "on the fly"?
Do we need to track magnetic variation change every year and manually
edit nav.dat for it?
2013/8/5 Torsten Dreyer <tors...@t3r.de <mailto:tors...@t3r.de>>
Hi Tomash
the navradio code is far from being perfect and and least to
attempts for improvements exist.
Unfortunately, both have currently stalled due to several reasons.
The first is in newnavradio which you can use by setting
<use-new-navradio type="bool">false</use-new-navradio> in your
aircraft xml as does the SenecaII.
Note: this is still an experimental feature and some
instruments/aircraft might not be compatible with that implementation.
I'll continue to work on this, once I find more time for fg hacking.
The second is a very detailed radio signal propagation model that
has not made its way into the repositories.
I don't know what the state of this is.
I hope this helps - Cheers
Torsten
Am 04.08.2013 19:20, schrieb Tomash Brechko:
Hello!
In file src/Instrumentation/navradio.cxx method
FGNavRadio::adjustILSRange the code that narrows ILS-LOC beam is
commented out since the end of 2004. Are there any reasons not
to have directed localizer beams? Being able to tune to
localizer just from anywhere is a bit unnatural.
--
Tomash Brechko
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