> > I've done some changes to A320, works fine, but auto coordination is
worst.
> > Does anyone know how to calculate rudder pos due to bank or whatever to
fly a
> > curve?

> There is this easy approach:
> fgfs --enable-auto-coordination
see below

> > I need some delta(???) to do correction of this delta with the rudder.
But delta
> > of what?
> > velocities/rdot and vel./rdot-aero ? ... just guessing :)
>
> The auto-coordination setting in FlightGear does this:
> set_rudder( aileron / 2.0 );

IMHO this could not be right!
Example: you fly a turn at low bank angle lets say 5�, so you will need no
(or very less) aileron to hold the bank. (aileron = 0)
but at 5� Bank you have to use rudder to fly a correct(!) turn, and
rudder=aileron/ 2 = 0/2 = 0 != rudder needed.

I think in a correct coordinated turn, the accel. of the y-axis has to be
hold (close to) 0.

markus


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