Not quite correct. At high angles of attack, the elevator produces lift and
at of angle of attack, it produces negative lift. The crossover (i.e. zero
lift, minimum drag) is a design criterium and is usually placed at the max
L/D angle of attack. But then, this will of course be influenced by a large
variation of the CG.

--
Bert Willing

ASW20 "TW"


"Gldcomp" a écrit dans le message de
. com...
Bert,

It has little to do with airspeed. The position of the CG will determine
the
force on the elevator.


"Bert Willing" wrote in
message ...
You're right - the elevator produces lift (same direction as the wings)
at
low speeds, not at high speeds. Got mixed up.

--
Bert Willing

ASW20 "TW"


"Gldcomp" a écrit dans le message de
om...
"Bert Willing" wrote
in
message ...
That doesn't make sense to me. At high speeds, the elevator produces
lift
so
in case of structural failure, the bits would go upwards.

--
Bert Willing

ASW20 "TW"

Bert,

The elevator does produce lift, but in the opposite direction as the
wings
(most of the time anyway).