V12 wrote in Tue Aug 27, 2019 4:40 pm:C550 - very similar results, with uncommanded barel roll. But overall fly much better than Cit X...
Conditions as previous, 10 Hz sample rate, Elevator, Ailerons from -1 to 1, RollRate degs per second
Was that test with the xml file that i link you?
What speed and altitude are present at the time of test?
I have already turned the C550 up side down only with pull the yoke and the aircraft goes stable up side down.
I'm flow up side down for more then a minute and it was stable.
Sure, thats not realistic because the C550 isn't a acrobatic aircraft, but it shows that full elevator doesn't end in an uncomented barrel roll.
The C550 has a maximum celling of FL430, but this is hard to reach.
Everybody can feel that above FL300 the behaviour is changing because of the thin air and less surface authority.
Make sure that your (acrobatic) tests are made below FL200 and more then 220 kts speed.
I have also flowen the Citation X (only from FGaddon) and i'm also not happy with the FDM.
But i'm concentrate on the C550.