He suggested a wind that is dynamic and tied to the speed of the conveyor
(and therefore also tied to the speed of the plane).

The plane can feel the conveyor - wheels are not frictionless. The friction
is not even insignificant. An amplified example would be trying to take off
in slushy snow. I think you will agree that the plane will feel that drag.

Back to the original puzzle - yes, the plane will accelerate and takeoff but
it will be a longer takeoff roll to overcome the increasing friction of the
wheels turning at twice the normal speed.

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Travis
"cjcampbell" wrote in message
oups.com...

darthpup wrote:
Must consider the wind at time of experiment. If wind is same speed as
conveyor then real problem??

Wind has nothing to do with it. The airplane will accelerate and move
down the treadmill just as it would a stationary runway. It cannot feel
the treadmill at all. The wheels can, but the wheels spin independently
of the thrust generated by an airplane.