I have not noticed any difference in adverse yaw on tow vs free flgiht. I
will pay attention to that and see.

On tow however, students often seem to try to "steer" with the stick
(only).

This of course leads to adverse yaw, which causes to student to further
try to steer with the stick adding further adverse yaw, etc. It can get
out of hand quickly.

In fact, on tow, "steering" should be done with (almost) only rudder! I
find that application of rudder will yeild bank angle as well. (dihedral
effect, advancing wing etc.)

I tell students to use the sitck in order to match the glider's wings to
the tow planes wings (bank angle) and use the rudder to "point" the
nose where desired. (They wrongly try to point the nose using the stick
and adverse yaw gets them every time)

I have noticed that while turning on tow, the stick is often to the
outside of the turn, preventing "overbanking" tendancy!.

I also tell students, use 80% rudder and 20% stick to demonstrate the need
for rudder on tow, and minimal stick forces.

Here is another one. In normal tow position, I notice that the stick has
to be slightly LEFT of center. The glider has a tendancy to want to roll
right. I beleive this is because to tug's wake has a rotation to it.
(even above the wake) Students tend to mechanically "center" the stick,
and the glider will roll right. Experienced pilots naturally put the
stick whereven necessary to achieve wings level. I often ask them if
they were holding left stick. Invariably they say , "I dunno"

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At 10:15 16 March 2009, Alan Garside wrote:
Can I add another question, why does the adverse yaw at 60 on tow appear
to
be more than 60 in free flight, many students learing to aerotow have
difficulty with the rudder.