autopilot changes trim

[nickexists]

Many times when i come out of autopilot using alt+9 my roll and/or pitch trim will suddenly be set differently that before I went into autopilot. This causes me to suddenly start rolling to one side. I have notices this on all fc3 aircraft as well as the su25t. Has anyone else experienced this and does anyone know how to avoid it?

[HiJack]

If you move your stick when going out of autopilot it does trim to the current setting the stick has. Try deactivate autopilot when you are not touching the stick.

[uboats]

not for me.

as Hijack said, try away from ur stick before disengage AP

[esb77]

The autopilot makes liberal use of trim when flying the plane, and will trim as much as needed to maintain the programmed auto-pilot mode. It continues to do this until it has been shut off.

 

If you want to exit autopilot in a neutral trim, then you need to switch to a wings level auto-pilot mode and let it stabilize before shutting it off. Note that when I say neutral, I'm talking about a trim position that doesn't cause deviation from straight and level flight. To zero out trim after using auto-pilot you must adjust it manually, at least with the Su-25T. I forget if any of the other FC3 planes have a working Trim Center command or not.

 

Just as a matter of clarity I thought I should point out that when they talk about the AP acting due to stick inputs when you turn it off, the AP will be trying to counteract your stick input to maintain the programmed flight mode, not setting trim to current the stick position as it would in the helicopter modules.

[Zabuzard]

As said the autopilot uses the trim function to fly you around.

Be aware that if you loose hydraulic pressure (damaged turbine) the autopilot won't work because trimming needs hydraulic pressure.

The neutral-trim key works for all FC3 aircrafts but not for the Su-25T.