Brian Case wrote:

I don't think the point was that a glider won't stall in a steep turn.
I think the point was that in some gliders with the CG far enough
forward and a small enough stabilizer, the stabilizer can not produce
enough down force when in high G turn to get the wing to the critical
angle of attack and thus stall. Limiting the stabilizer/elevator is a
well known trick to prevent (or least make it more difficult to stall)
stalls if power aircraft, both Ercoupe and Stinson used this trick.
Flying glider with an aft CG and/or large stabilizer will definently
stall in a steep turn. Other might be made to, but it are more
difficult to stall in a turn.


I completely disagree with the idea that you need more down force
(at any given bank angle, including zero) in order to get a more
nose up attitude. This would mean that the wing airfoil is stable,
which is not the case except for flying wings. What you need is more
elevator deflection, but not because you need more force, rather because
the airflow at the tail plane has a different direction when the attitude
is more nose up, needing a higher deflection even to produce a lower
force. If this would not be the case, the whole aircraft (wing + taiplane)
would be unstable.