John,
Don't put the servo on the rudder.
Pecking order on autopilots is:
1. Roll... ie keep the wings level, or gentle turns to track a
heading or course.
By controlling the roll of the airplane it is hard to get in
too much trouble.
You know... keep the clean side up & the dirty side down.
2. Pitch (airspeed & vertical rates).
3. Yaw (only need to keep maneuvers coordinated).
Airplanes turn because the wings are banked (aileron). Rudder is
used to coordinate the turn.
From level flight you can step on the rudder and get a yaw induced
bank... but it won't be coordinated.
For many reasons, the navaid servo must not be hooked up to the
rudder.
I'm sure Navaid would not approve of their "wing leveler" being
hooked up to the rudder.
It wasn't designed for that.
Good try though. Keep up the original thought!
Dave Conrad, A078, Cincinnati, Ohio
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