Hi Jim, > This isn't (or shouldn't be) a factor. If I'm not mistaken a standard > Autopilot "Heading Hold" should only be concerned with maintaining the > orientation of the aircraft. >
Okay, it looks like the yawing moment is acconted for. If you use the delta value (difference betrween actual and desired heading) as the error function to calculate the required correction, and if there is a rolling/yawing moment due to some other force ( like P factor) then the controller reaches a equilibrium point where the aileron inputs (deflections) create a moment equal to the added moment and the bank goes to zero and turning stops. You might check to see if the ailerons are in fact neutral in the heading hold mode when bank is zero. At least this is what I'm seeing with my implementation in the FMC. Regards John W. _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
