Stefan wrote:
Robert Ehrlich wrote:

symetric. The way students are often taught, i.e. "coordinate" in free
flight and "don't coordinate" on the ground often induces them to do
as if there is no more adverse yaw while on the ground, when the truth
is that this parasite effect often is the most important in this case,


I am certainly the scientific and theoretic guy, but it was only when
I've completely stopped to think about those things when my flying
enhanced considerably. The way I do it:

- In free flight, use ailerons to get the desired bank angle, your feet
to keep the string in the middle and the elevator to keep the nose at
the horizon.

- On the ground, use the feet to steer and keep the wings level with the
ailerons.

- On tow, stay in position using all three controls as needed and when
possible try to center the string.

No theory needed. Works for me.

Exactly what I found to be true for my students: make the "picture" (the
view out the front of the canopy look right, and you'll be flying right.

The theoretical reasons for how the glider reacts to control inputs can
be interesting, but you don't need to know them to fly properly. I've
talked to a lot of pilots that know how to fly properly, but don't
understand the theory. The basics of controlling the glider don't
require thinking, but just mechanical reactions to the what the eye sees
(primarily) and what the body feels (secondarily). Thinking is very
important for things that require judgment, of course.

--
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Eric Greenwell
Washington State
USA