Plane Problem
- Thread starter Mr.Russian
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haha 20 pages! is it still the same 4 or 5 people? I couldnt imagine anyone getting into this in the middle of it, it would mean reading through pages and pages of senseless argument.
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Planes need lift, forward movement equals lift. The wheels dont 'push' off the ground. But have any of you seen a wingless engine just fly into the air? The wing needs air to create lift and if the ground isnt moving then there is no lift. The wheels don't matter, what does matter is if they are moving foward to create that lift.
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wingless engine...
http://www.youtube.com/watch?v=Qupq9nPmevQ shows the princip of a wingles engine a funny way.
and there other guys that make it fly since 1963:
even if my post doesnt explain why the early engineers found it usefull to screw weels to a plane, may someone can still smile.
http://www.youtube.com/watch?v=Qupq9nPmevQ shows the princip of a wingles engine a funny way.
and there other guys that make it fly since 1963:
even if my post doesnt explain why the early engineers found it usefull to screw weels to a plane, may someone can still smile.
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Yeap, even though he pushes the "belt" up, the "plane" is still having trouble to accelerate.
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I don't understand how a plane that is not moving forward can fly. That's my take on this thread fifteen pages ago.
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So, if I put on some wings and ran on a treadmill I'd create lift and be able to fly???!!!!
No. But if we tie an engine/rocket on your head (engine provides the thrust) you would fly. You would only have to run 2x faster so that you wouldn't trip over.
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I thought he was an Idiot Savant.
"Idiot" Savants are now, more accurately, called Autistic Savants.
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The plane increases thrust. It begins to move forward. The treadmill tries to match it's speed by turning the opposite direction, but it only tries to match it. For the tread mill to stop the forward movement of the plane. It would have to anticipate the planes forward movement by going faster than the wheels are turning. Since it only matches the forward movement. The wheels will always be moving faster than the tread.
Once the plane over comes the friction in it's own wheel bearing, which isn't much. The tread mill will never be able to stop forward motion simply by catching up. It will always move slower than the wheels.
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Man, I read through everything I wrote before I got back on track. That is just embarrassing.
Once the plane over comes the friction in it's own wheel bearing, which isn't much. The tread mill will never be able to stop forward motion simply by catching up. It will always move slower than the wheels.
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Man, I read through everything I wrote before I got back on track. That is just embarrassing.
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The only friction involved is in the bearings. If they had enough to stop forward movement than no plane could take off. Even on a regular runway.
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It's amazing that this thread has gone on for 400 posts. The plane doesn't know or care that it's on a treadmill. By the logic of those people that say it won't fly, if the motion of the plane's wheels mattered one bit the plane WOULD NEVER BE ABLE TO FLY because as soon as the plane leaves the earth it would slow down and fall from the sky. The plane doesn't impose any force on the treadmill except for the normal force due to it's weight. A plane doesn't get forward motion because it's pushing on the earth ffs, it flies because it's pushing on the air.
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