Wills Wing Sport 2 155, Owner'S Service Manual

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Aerotowing
The Sport 2 aertows fairly easily as compared with other gliders in its performance class. We recom-
mend that the VG be set to 50% prior to launch. This reduces pitch pressures, slows the roll response
of the glider, and provides the best qualitative flight characteristics for flying in formation with the tug
at normal aerotow speeds.
When aerotowing, it is important to match the height of your control bar to the height of the rear keel
support on the ground cart so as to properly set the initial angle of attack of the glider. If the glider is at
a higher angle of attack on the cart than is optimum, you should recognize the launch will be more
demanding, and more dangerous, as the glider will have an increased tendency to leave the cart at a
lower speed, where lateral control is reduced, and the tendency to come off the cart with one wing low is
increased. To some degree, this can be compensated for by pulling forward through the control bar to
position the basetube below your shoulders, and holding tight to the hold down rope. This will cause the
glider to raise the keel as it begins to develop enough lift to fly out of the cart. At that point, and not
before that point, you can release the rope and ease your weight aft to fly the glider off of the cart. Be
prepared to pull in once clear of the cart if necessary so as not to climb more quickly than the tug.
Once clear of the cart and in position behind the tug, use firm lateral movements of short duration for
roll and directional control in order to stay in position behind the tug. Do not move to one side of the
bar and wait for the glider to respond - this will lead to over control and being out of position, and may
lead to roll / yaw oscillations. It is better to "bump" the glider firmly in the direction of the desired
correction and then return to center. If you need more correction, bump again. In pitch, stay on top of
the situation and be as aggressive as necessary to keep the tug on the horizon.