Ron Natalie wrote:
Matt Whiting wrote:


Then you should know that the vertical stab can't prevent yaw, it can
only help eliminate yaw once it occurs as it can't provide any
restoring force until some degree of yaw occurs. A rudder an prevent
yaw from occurring in the first place. Fundamental difference here.


Nope. In most flight regimes if you displace the rudder you are
generating yaw not preventing it. What you are trying to wrap
your brain around is that you can use the rudder to accellerate
the responsiveness of the vertical stabs natural tendencies,
but by your own admission, in coordinated flight the stab is
streamlined.

No, I'm trying to get you to wrap you brain around the fact that the
rudder can act preemptively to prevent a departure from coordinated
flight. The vertical stab can not act preemptively. Fundamental
difference.


Matt