Coordinated turns without rudder, and autopilots

Ron Natalie wrote in news:465c02e7$0$30412
:

Dan wrote:
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So where is this perfect airplane? I don't know about you, but I
need
the rudder pedals to fly the aircraft.

Get in most any aircraft. Take it to a normal cruise airspeed.
Put your feet flat on the floor and roll her into a standard rate
turn. I can almost guarantee the ball will be centered.

No, it won't, actually. The tendency towards adverse yaw is amelierated
in most modern light airplanes, but it's still there. It's just that
most modern airplanes ahve been dumbed down to allow almost co-ordinated
flight without rudder usage, but there isn't a conventional airplane
flying without CAR that is totally co-rdinated in when roll is
introduced, though many come close.
That includes airliners which we fly with feet on the floor most of the
time. Some, on approach, have some sort of third axis feature, but most
are two axis most of the time (exceptying FBW busses and the 777) The
yaw damper does a lot towards co-ordinating, but if you introduce a high
rate of roll, they'll yaw, at least momentarily, the worng direction.


Bertie