Quote:
Originally Posted by Redboots
(Post 172416)
I'd say it would not fly...
At take-off, the brakes are applied until the thrust developed by the engine(s) reaches the required power level.
The thrust then pushes the craft forward. The weight of the aircraft causes friction between tyre's and runway. This would set the "conveyor" in motion and the aircraft would remain static while the engine rev'ed and the conveyor conveyed:blink:
John
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You are right. When the brakes are applied, the plane isn't moving, therefor the conveyor isn't moving either, bit when the brakes are released, the wheels move foreward. The conveyer counteracts this and spins the wheels at twice the speed, but this is irrelavent because the plane is moved foreward by thrust, not by friction with the ground. The plane takes off.
For every reaction there is an opposite and equal reaction. If the planes engines are creating 14,000 pounds of thrust and the plane is standing still, where is all the energy going? |
