Originally Posted by
kento
a plane does not need ground speed. it needs airspeed. a plane could be sitting without wheels on a tarmac and if a 200mph wind came directly at it, it could lift off.
Sure, but under normal conditions it needs ground speed to create the airspeed it needs to take off. Right?
Originally Posted by
reno96teg
i just want to clarify. the plane is NOT going to float up. it's going to move forward and take off like a regular airplane. the treadmill will have to be as long as whatever the plane needs to take of regularly.
you disagree? you think it will stay fixed on the moving treadmill?
Under ideal conditions (no wind, no friction, etc), I think it would stay stationary. If it has enough thrust to overcome the speed of the treadmill, then it will move forward. But in this hypothetical situation, we are saying that the treadmill speed will match that of the plane at every instant.
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