but the key, and I do mean KEY, difference between a boat and a plane is this:RoosterCantrell wrote:
A jet must move forward to create lift. The jet engines are creating thrust to move the plane forward. once the plane gains enough speed, the airflow under the wings will LIFT the plane up as the plane is jet thrusted forward, The wheels are crucial, because they provide a method of moving the wieght of the plane with little energy, as opposed to being without wheels, the plane would just slowly spark across the runway. So, a Treadmill negating the ability of the wheels to provide a energy efficient way of moving the aircraft.
Think of a boat. water=wheels. A boat can be moved with an oar in water. But on land. the boats right there. not going anywhere. remove the water(wheels) you are screwed. ITs like rowing against the flow of the river. you need alot more energy to overcome the flow of water, more than a jet aircraft can handle. But not a rocket.
The jet engines do not fly a plane. they do not have the power alone, they need lift. NOw, IF a rocket or missile had wheels and on a treadmill, it would launch without a problem. A rocket or missile flys soley on its boosting engine, its wings only for steering purposes. The plane is pushed by its engines, but needs speed to take off Speed=airflow under the wings. A treadmill is a belt, simply. anyone who has ever been around a belted machine knows that belts create limited airflow, not enough for this theroy to do any good.
A plane with its engines thrusting to make the aircraft move 250KPH ON ITS WHEELS, while the treadmill going 250KPH goingthe opposite way, negates the planes movement. if the plane was going 249KPH, and the Treadmill was going 250KPH, the plane would move slowly backwards. THE WHEELS ARE VITAL to roll the plane forward from the thrust of the engines forward to gain speed to create ariflow under the wings.
PUSH A HEAVY CART! its hard to get it started, but once you do, its easy. ITS MOMENTUM, the plane flies once the wheels have helped the plane to gather momentum at takeoff! The plane MUST HAVE FORWARD MOMENTUM to achieve sufficient airflow
the boat's hull is sitting in / on the water. The hull is not able to rotate along with the flowing water.
Also, the boat is powered by the oar.. which uses friction within the water to create power.
A plane's hull is not sitting on the ground - it is sitting on wheels, which are able to rotate along with the moving treadmill.
If the plane's hull, which cannot rotate, was sitting on the treadmill, then the plane would go backwards, as the thrust required to move such a large object would be too immense.
Also, the plane is powered by it's jets, which do not use friction with the treadmill to create power.
I've not ever said it won't require MORE force, but the extra force required would not be that great, as all it would have to overcome would be the friction of the wheels rotating.
