No, although bringing the conveyor to a sudden stop would effectively provide a minor initial boost to the plane's velocity, acting like a very rudimentary and primitive catapult.
Well I believe the answer to this question is yes the plane will take off. You see it would be impossible for the convener belt to match the speed of the airplane because the plane isn't moving forward by motion of the wheels it's moving forward by the propulsion of air through the engine.
Think of it like this, A car’s wheels are its means of propulsion—they push the road backwards (relatively speaking), and the car moves forward. In contrast, a plane’s wheels aren’t motorized; their purpose is to reduce friction during takeoff (and add it, by braking, when landing). What gets a plane moving are its propellers or jet turbines, which shove the air backward and thereby impel the plane forward. What the wheels, conveyor belt, are up to doesn't really matter as once the pilot fires up the engines, the plane moves forward at pretty much the usual speed relative to the ground—and more importantly the air—regardless of how fast the conveyor belt is moving backward.
All the conveyor belt does is make the plane’s wheels spin madly. So if a plane moves forward at 10 knots through the air then it will move forward at 10 knots the conveyor belt will just make the planes wheels spin faster. And if the plane can move forward it can generate lift = plane takes off.
(02-22-2017, 08:44 PM)TickTack Wrote: Well I believe the answer to this question is yes the plane will take off. You see it would be impossible for the convener belt to match the speed of the airplane because the plane isn't moving forward by motion of the wheels it's moving forward by the propulsion of air through the engine.
Think of it like this, A car’s wheels are its means of propulsion—they push the road backwards (relatively speaking), and the car moves forward. In contrast, a plane’s wheels aren’t motorized; their purpose is to reduce friction during takeoff (and add it, by braking, when landing). What gets a plane moving are its propellers or jet turbines, which shove the air backward and thereby impel the plane forward. What the wheels, conveyor belt, are up to doesn't really matter as once the pilot fires up the engines, the plane moves forward at pretty much the usual speed relative to the ground—and more importantly the air—regardless of how fast the conveyor belt is moving backward.
All the conveyor belt does is make the plane’s wheels spin madly. So if a plane moves forward at 10 knots through the air then it will move forward at 10 knots the conveyor belt will just make the planes wheels spin faster. And if the plane can move forward it can generate lift = plane takes off.
According to the OP, the conveyor belt matches the speed of the wheels.
Even if the aircraft is propelled forward by jets, the conveyor belt will still theoretically match the speed of the wheels, which means the ground speed of the aircraft is effectively zero.
Remember, this is one of those 'thought experiments', so the fact that it would not be possible for the conveyor belt to have the same velocity doesn't exist, so the answer is NO.
(02-22-2017, 08:44 PM)TickTack Wrote: Well I believe the answer to this question is yes the plane will take off. You see it would be impossible for the convener belt to match the speed of the airplane because the plane isn't moving forward by motion of the wheels it's moving forward by the propulsion of air through the engine.
Think of it like this, A car’s wheels are its means of propulsion—they push the road backwards (relatively speaking), and the car moves forward. In contrast, a plane’s wheels aren’t motorized; their purpose is to reduce friction during takeoff (and add it, by braking, when landing). What gets a plane moving are its propellers or jet turbines, which shove the air backward and thereby impel the plane forward. What the wheels, conveyor belt, are up to doesn't really matter as once the pilot fires up the engines, the plane moves forward at pretty much the usual speed relative to the ground—and more importantly the air—regardless of how fast the conveyor belt is moving backward.
All the conveyor belt does is make the plane’s wheels spin madly. So if a plane moves forward at 10 knots through the air then it will move forward at 10 knots the conveyor belt will just make the planes wheels spin faster. And if the plane can move forward it can generate lift = plane takes off.
Wrong, a plane can't just aviate just because the engines get some air, it needs forward momentum to be able to get its ass near the ground and use aerodynamics, according to your logic, the plane would need to be like a hydra yet and be able to launch upwards, it can't move forward, it needs the wheels for that, if the plane is on the ground, the engines is only there to move the wheels until it can finally aviate, if you can't move forward you can't go in the sky. done.
(02-23-2017, 12:40 AM)Shelco Wrote: Wrong, a plane can't just aviate just because the engines get some air, it needs forward momentum to be able to get its ass near the ground and use aerodynamics, according to your logic, the plane would need to be like a hydra yet and be able to launch upwards, it can't move forward, it needs the wheels for that, if the plane is on the ground, the engines is only there to move the wheels until it can finally aviate, if you can't move forward you can't go in the sky. done.
(02-23-2017, 12:40 AM)Shelco Wrote: Wrong, a plane can't just aviate just because the engines get some air, it needs forward momentum to be able to get its ass near the ground and use aerodynamics, according to your logic, the plane would need to be like a hydra yet and be able to launch upwards, it can't move forward, it needs the wheels for that, if the plane is on the ground, the engines is only there to move the wheels until it can finally aviate, if you can't move forward you can't go in the sky. done.
You're still thinking of the airplane in terms of a car, the forward momentum do not come from the wheels it comes from the engines which sucks in air at the front, compresses it and spits it out the back, this is what creates the forward momentum or pushing force. A better way to explain it is imagine if your in a shopping cart on this conveyor belt and there's a wall behind you and you push off that wall using a long stick your cart will still move forward the belt can be moving at a faster pace than the shopping cart moving back but the wheels will just spin faster to compensate while the cart is moving forward from the pushing force generated by you pushing against the imaginary wall, it's the same principal with the engines, their pushing force isn't derived from friction of the tires with the ground it's derived from the engines using the air as thrust. Thus the forward momentum is obtainable and if it moves forward it will fly due to the lawls of phizx we all know and love.
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