If I make a round trip, the HUD shows correctly the latitude and longitude,
and aparently the Heading is always ok.
When I take off, the HUD and compass shows the same heading, and I adjust
the giroscope so it shows the same heading as them.
At the very first I can note a derivation between the giroscope in one
side, and the HUD and compass in the other side. This difference makes
greater as the flight time passes.
If I stay quiet in a place...I have noted that the compass derives very
very slowly.
Over long times, the diference between the compass and the HUD becomes very
big.
So it becames imposible to navigate with the giroscope or even the compass.
Apparently the HUD is the only reliable navigation "instrument".
First I wondered whether this difference was caused to the difference
between the magnetic and geographic poles (the simulator model does really
contemplate this difference?) but the compass derives even when I'm quiet.
Has someone observed this? Or something in my house alterates the magnetic
field applied to the compass? ;-)
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