Reply With QuoteThe premise of the question is wrong. The plane uses the air not the ground.
On a day with absolutely calm wind, a plane is standing on a runway that can move (some sort of band conveyor). The plane moves in one direction, while the conveyor moves in the opposite direction. The conveyor has a control system that tracks the plane speed and tunes the speed of the conveyor to be exactly the same (but in the opposite direction). Can the airplane ever take off?
The premise of the question is wrong. The plane uses the air not the ground.
Freak is correct. But to answer the question,,,,no. There will never be enough lift created by airflow on the wings. Now a rocket yes. Thrust is a must.
The premise of the question is wrong. The plane uses the air not the ground.
It is called "relative wind". On the other hand, the wheels of the plane would be spinning twice as fast as on a normal take off.
The premise of the question is wrong. The plane uses the air not the ground.
There is nothing wrong with the question.....there IS an answer.
It doesnt matter how fast the conveyor spins the wheels. The plane needs to achieve enough ground speed to achieve lift, then it becomes airspeed. If the plane moves forward fast enough, it will lift.
NO again. Only reaso I say a rocket is for the plain simple reason that a conveyor will never keep up with thrust. But on paper even a rocket wouldn`t fly. The conveyor would counter any thrust and forward movement resulting in ,,,well,,,nothing but burning fuel.
Wait... you guys are all thinking car talk. The plane WILL take off. The conveyor will be spinning the wheels twice as fast as normal, but the thrust will propel the plane through the air just fine. A car with the wheels being the driving force will just sit there and not move.
Wait... you guys are all thinking car talk. The plane WILL take off. The conveyor will be spinning the wheels twice as fast as normal, but the thrust will propel the plane through the air just fine. A car with the wheels being the driving force will just sit there and not move.
Ding Ding Ding. We have a winner. An airplane is driven by the jets in the air, not wheel driven. The conveyor has zero to do with what's going on in the AIR. The wheels will spin twice as fast and will take off just fine (assuming the bearings can handle the rotations).
Thats a good one... already got a couple people here at work with it.
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