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Old Nov 27, 2005 | 12:34 AM
  #61  
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just don't be so closed minded and you'll see life much more clearly.
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Old Nov 27, 2005 | 03:45 AM
  #62  
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Originally Posted by [Damnit]
...go back to school and take physics 101 kthxbye
haaha and how much physics have you taken?
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Old Nov 27, 2005 | 03:48 AM
  #63  
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wont take off... a plane need thrust(counter acts drag) AND lift(ounter act wheight/gravity) in order to take off. thrus will be generated by the engiens even if on a belt. however lift is only generated by aerodynamics and most of it is created by a wing passing through the air or the air must be moving around a stationary wing, one or the other.

so in your example it wont take of... however if a giant fan is added in then it could!
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Old Nov 27, 2005 | 05:07 AM
  #64  
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Originally Posted by b00gers
That phsysorg is a cool forum. They have some very enlightening discussion there.
























:wavey:
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Old Nov 27, 2005 | 06:10 AM
  #65  
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Originally Posted by [Damnit]
.

anyone thinking otherwise is a dumb ass, the only thing moving are the wheels. there is no air flow under the wings to create the lift for takeoff, end of thread h:
you're slow. Kestrel and brtecson are probably the most qualified on this board to answer this question. common sense > you. it's just that simple.

Originally Posted by Kestrel
For a plane with perfect bearings and tires, take off is unaffected. For a plane with real bearings and tires, the plane will take off a little more slowly. Unless it's a hang glider or one of those funky gliders with powered wheels, then my original answer stands .
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Old Nov 27, 2005 | 11:27 AM
  #66  
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Originally Posted by Highmile
Did people acctually say no?
My reasons are stated in this post: https://www.honda-acura.net/forums/s...1&postcount=23
I believe it pretty much sums up the two schools of thought presented in this thread.
Originally Posted by Highmile
...The guy who talked about friction in the wheel bearings had a point and there would be a certain amount of attraction or stickyness of the tires to the belt (surface tension), but as they spin faster and faster, they would over come that attraction to each other as they expand from centrifugal force (drag tires increase their diameter as the car launches) and push the plane away from the belt...

The runway belt that advances at the plane represents a frictionless surface for the tires to sit on. A ice covered runway, or a lake (tons of friction really and more of a problem than a runway belt matching the attempted speed of a plane) could be substituted in your mind to help you realize how rediculous this is.

My final answer is Yes, the plane will be able to run up and take off, even if the belt is going twice as fast as the plane in the opposite direction. Oh no I didn't.
I'm going to go ahead and use what people are hinting at to add a third possibility. If everyone wants to take it that literally, then shouldn't you take into account the speed rating of aircraft tires? I have no idea what it is. But I'd assume that takeoff speed depends on the airplane's design. Maximum speed rating of the tires on that airplane will also depend on the tire. Essentially though, at the air speed at which the airplane's wings would generate lift, the wheels would be spinning twice as fast as they would during takeoff on a normal runway. That's a lot of stress on the tires and wheel bearings and other related components. There exists the possibility that before the plane generates enough airflow for lift, the wheels or landing components will fail and the plane will be lost on the belt. Before saying yes, one would have to take those items' capabilties into account. So, I'll add this:

Group 3: People who think it DEPENDS
These people believe that one would have to do more research into the design of airplanes and the maximum capabilities of their individual components. There is not enough information in the original question to make an outright decision without further time invested.


Oh and it's spelled ridiculous.
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Old Nov 27, 2005 | 12:10 PM
  #67  
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wow...just wow
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Old Nov 27, 2005 | 03:04 PM
  #68  
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I say no because it would cancel each other out.
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Old Nov 27, 2005 | 03:05 PM
  #69  
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Aaaaaaand apparently I missed the long discussion.
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Old Nov 27, 2005 | 03:23 PM
  #70  
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Do planes require friction between the tires and the ground to move forward? Cars obviously do, but does it work the same way for planes (or other vehicles that use thrust, rather then driven wheels to move)?
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