On Mon, 08 Feb 2016 09:55:16 -0800, kirk.stant wrote:

but there is also the overbanking effect of long wings seeing
different local airflow velocity in a turn; this can be countered by
holding aileron out of the turn (inefficient and draggy) or by adding a
little bit of slip via top rudder. This slightly increases the angle of
attack of the lower wing and decreases the angle of attack of the top
wing and voila, no overbanking, ailerons are flush and efficient, and
you gleefully outclimb the newb with the perfectly aligned yaw string.

True enough, and having reasonable amounts of dihedral is essential for
this to work. I didn't mention this primarily because I wanted to talk
about the effect of having the yaw string in front of the wing.

Of course I understand how yawing a dihedralled wing causes roll: when I
were a lad I used to fly single channel RC models before I discovered
free flight models and thermals.



Kirk 66



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