On Mar 16, 5:41*pm, wrote:

http://www.av8n.com/how/htm/4forces.html#note64* * *Section 4.3

http://www.av8n.com/how/htm/yaw.html#sec-yaw-stability* Section 8.2

* * *The bank moves the airplane sideways. The fin, moved sideways,
points the airplane in the new direction. The rudder controls adverse
yaw, which tends to drag the nose away from the turn.

Overcoming adverse yaw is only one of the reasons your reference gives
for using the rudder in a coordinated turn. The other is "You use the
rudder to change your heading (i.e. to overcome yaw-wise inertia, i.e.
to provide yaw-wise acceleration)" (section 8.8).

As the reference you cite explains, even apart from adverse yaw,
relying on weathervaning to realign the plane would not result in as
smooth a turn as properly coordinated use of the rudder.