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Originally Posted by fleaofsc
You guys don't understand what Mainerunr is trying to say. Both he and I understand what all you are trying to say. Someone else said "Can a plane take of if its wheel speed equals the speed of the treadmill." The answer to that question is NO. 
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Actually, it is still yes. If the plane were to throttle up, and reach the specific speed at which takeoff can occur, but does not have flaps set to make the plane take off, they could continue along the treadmill. Stay at that speed, at a constant, they could then change flap position, and take off. Wheel speed and treadmill speed would be equal - they were no longer accelerating. Yet they'd be able to take off as they'd be moving forward at the plane V1 speed. The wheels and treadmill would simply be traveling faster than the plane relative to the ground. That's all. So the answer is actually "Yes, if..." If the plane is taxiing on the tradmill runway at 10mph relative to the ground, of course it won't take off.