fix(a380x/flight model): A380X Flight Model Update plus fix auto-rotate issue

[donstim]

Fixes #[issue_no]

Summary of Changes

General update to flight model plus:

1. Fixes auto-rotate issue
2. Updates flap and gear drag values to match pitch/power tables

Screenshots (if necessary)

References

Additional context

Discord username (if different from GitHub): donbikes

Testing instructions

1. Test different takeoff conditions to verify auto-rotate (complete nosewheel liftoff before VR) is fixed. (Note: I used full passenger payload with 25 T of fuel as the critical condition. I also checked the same payload with 10 T of fuel. Hopefully, there aren't any reasonable loadings that will result in auto-rotation.)
2. Test full flights, including use of BTV, to make sure there aren't any anomalies introduced.

How to download the PR for QA

Every new commit to this PR will cause new A32NX and A380X artifacts to be created, built, and uploaded.

1. Make sure you are signed in to GitHub
2. Click on the Checks tab on the PR
3. On the left side, find and click on the PR Build tab
4. Click on either flybywire-aircraft-a320-neo, flybywire-aircraft-a380-842 (4K) or flybywire-aircraft-a380-842 (8K) download link at the bottom of the page

[Ueeew]

@donstim If tested this PR when you opened it 1 or 2 week ago, so it might be a bit outdated but I wanted to give feedback. The auto rotation works really good and only at light weight It rotated a few knots before the actual rotate speed. This works really well. The flap modification didn’t work that good. Flap config 1 and 2 worked pretty much as before but on landing when deploying flap cfg 3 and then Full the aircraft generates from on moment to another so much lift that it needed to pitch down so drastically that you went from a normal (-1)° - 3°pitch, with Flap cfg 1 or 2, on an 3° glide-slope TO an 5° or more nose down dive to stay on this 3° glide-slope with cfg 3 and Full. What I want to say by that is that In my opinion Flaps cfg 3 and Full produced way to much lift, keep in mind that this might be fix until now. Maybe this feedback helps even though it’s 2 weeks old.

[donstim]

Thanks for the comments, but yes the version you tested is very much outdated. I continue to work with this on my own system and only occasionally update this PR. Even so, I don't think I've ever had the behavior you've described for CONF 3 and FULL.

I've chosen a more critical case for the auto rotate issue and have resolved it, but it requires an unacceptably high trim level during other phases of flight. Still working on it, but it's a very frustrating process that requires constant re-tuning of parameters every time one of the major parameters is changed.

[aadee9940]

Hi, I just did a flight taking off at 430T with a 55c Flex, 132, 147, 152.
The auto rotate behavior seems to be solved. As you know in the past the nose would begin to lift itself in the 140kts region, that is gone now.

In terms of the BTV, everything was fine. I did not catch anything odd.

Thank you for this fix.