w.i.p INU alignment doesn't affect TSD

[FalcoGer]

• When starting a cold aircraft the INU says it's 55m confident.
• When creating a new point, that new point's default coordinates is on the north pole.
• The TSD waypoints and routes are visible, despite the aircraft either thinking it's on the north pole or 55m confident about it's position. And when selecting CTR they line up perfectly with the aircraft.
• The TSD PP (Present Position) is perfectly accurate before alignment
• The confidence jumps instantly from 55m the second power is applied to a couple of meters after alignment.
• The confidence doesn't go down anymore (less accurate), even if the INU is reset (new points on north pole again) or power is lost. In fact the INU's position confidence is 0m accurate after power down and restart, except the rest of the aircraft behaves as though it was a cold start after aircraft selection.

None of that makes any sense, at least to me.

1. I would expect the INU becoming more confident about it's position over time during the alignment, not instantly jumping from 55m to 7m.
2. I would expect the INU to not know where it is at when the reset button is pressed.
3. I would expect that the present position and the default for new waypoints becoming the INU's best guess and that they are the same.
4. I would also expect the symbols for waypoints on the TSD to shift with the INU's confidence in the aircraft's heading and position.
5. And I would expect the map to be available as soon as the INU thinks the aircraft is somewhere in some area that has a digital map stored, only shifted and rotated according to the INU's idea of where the aircraft is.

Maybe some logic applies if the two INUs disagree by some margin that I'm not aware of, and in which case no map is shown and the aircraft is considering itself to be at the north pole. But then I would expect that PP is also on the north pole and any waypoints be a couple thousand km away and thus not visible on the TSD.

INU_makes_no_sense.trk

Edited January 17, 2023 by FalcoGer

[QuiGon]

The Apache INS is still WIP.