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Oscillation in combination of ALT HLD and GT


Germane

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If you activate the ALT HLD or GT mode separately, the AP works fine, but if you activate the GT mode and the ALT HLD mode at the same time, there is a significant oscillation up and down. Similar before the revision of the autopilot.
At the same time, I would like to thank you here for the excellent work of the AP.

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Can someone kindly give me a quick explanation of how Ground Track is supposed to work?  I use Alt Hold and think the work done on the new AP is wonderful, I just haven't gotten 'round to using GT yet.  I can't find a current explanation on Youtube since the AP was updated.  Thanks in advance.

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53 minutes ago, JupiterJoe said:

Can someone kindly give me a quick explanation of how Ground Track is supposed to work?

 

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On 4/7/2022 at 3:52 PM, Germane said:

If you activate the ALT HLD or GT mode separately, the AP works fine, but if you activate the GT mode and the ALT HLD mode at the same time, there is a significant oscillation up and down. Similar before the revision of the autopilot.
At the same time, I would like to thank you here for the excellent work of the AP.

Can you describe it a bit more or show a short track please? Are you sure you did not go beyond 450 KIAS? Above 450 you get a strong phugoid.

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9小时前,IronMike说:

Can you describe it a bit more or show a short track please? Are you sure you did not go beyond 450 KIAS? Above 450 you get a strong phugoid.

I reported this issues to yess, he take look on this, as well as jester ALT issues i made a detailed test for it. Comment on tracker.


Edited by Alphabet_Ghost

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4 hours ago, Alphabet_Ghost said:

I reported this issues to yess, he take look on this, as well as jester ALT issues i made a detailed test for it. Comment on tracker.

 

Thanks!

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Am 12.4.2022 um 21:55 schrieb IronMike:

Can you describe it a bit more or show a short track please? Are you sure you did not go beyond 450 KIAS? Above 450 you get a strong phugoid.

If the wings are not completely horizontal, there will be an abrupt downward movement when the GT mode is activated in conjunction with ALT HLD. This happens even with a minimum climb rate or with zero climb rate.
And yes, its also beyond 450 KIAS. In addition, I noticed that the HDG mode does not seem to work. Can anyone confirm this?

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20 hours ago, Germane said:

If the wings are not completely horizontal, there will be an abrupt downward movement when the GT mode is activated in conjunction with ALT HLD. This happens even with a minimum climb rate or with zero climb rate.
And yes, its also beyond 450 KIAS. In addition, I noticed that the HDG mode does not seem to work. Can anyone confirm this?

GT + ALT will be fixed in the next patch. HDG Hold does work, however it keeps oscillating ca. +/-2° left/right of the commanded heading, something in the FM is causing it to yaw, and we cannot just yet put our finger on it. We hope to fix it until the next patch and are working hard to solve the issue. Thank you for your feedback!

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Am 15.4.2022 um 14:42 schrieb IronMike:

GT + ALT will be fixed in the next patch. HDG Hold does work, however it keeps oscillating ca. +/-2° left/right of the commanded heading, something in the FM is causing it to yaw, and we cannot just yet put our finger on it. We hope to fix it until the next patch and are working hard to solve the issue. Thank you for your feedback!

Sounds great! Does the next patch already include the rework of the ACLS mode?

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