Quote Originally Posted by Ruiner
Explain this to me: WHAT will keep the plane from moving forward if there is forward thrust?!?!? WHAT??? Gravity? Yes, but that can be overcome as you and I both know. Drag on the wheels? It is very small, as they are free-rolling, but that is easily overcome. Weight of the plane? With enough forward thrust, that is negated as well, hence lift. If the wheels are allowed to roll freely, WHAT will keep it from moving forward in terms of the conveyor belt? How much force can the conveyor belt put on the plane? How much? If the plane has 300lbs of forward thrust, how much force can the conveyor belt, via the FREE ROLLING wheels, put on the plane?

Just answer me that.
Becuase the forward thrust is what gets the plane moving forwards. Now if the ground starts moving backwards then the plane is going to roll on the spot without moving forwards or backwards. The thrust is pretty much nothing more than accl. the thrust can push for all it was worth but with no air flow UNDEr the wings, the thrust pushes from behind the wings and back, so that stll produces no lift under the wings. There for the medium is the wheels. The example you used eariler about the two guys who tried the plane used is outside where there was still the slightest wing blowing and they used a propeller plane which wroduces a wind currect under the wings itself. A boeing does not it pushes itself forward, but if the ground under it goes nowhere then the plane goes nowhere.