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Originally posted by orca71
Originally posted by Mayet
Without looking at all the other replies, yes.. cos the plane could be like a jump jet with vertical take off...
It doesnt have to be a jump jet. Any kind of jet or propellor will get it moving forward. The conveyor belt increases friction to higher than normal levels because the wheels are moving twice as fast as usual but it has no effect whatsoever on thrust, and hence propulsion. People are getting confused because they are used to wheels being the source of thrust as in cars or motorcycles.
With so many getting confused by a simple brain teaser its no wonder that con artists are able to raise money for anti-gravity and warp drive schemes.
Originally posted by av8or
can we PLEASE stop arguing about this. It's getting on my nerves the number of people trying to 'scientifically prove that it will fly'. I won't bother trying to prove again that it won't fly because my responses have been over-simplified or over analysed. It's simple. the plane won't fly. take a step back, look at the bigger picture, the question is quite simple, as is the answer. CAN SOMEONE PLEASE CLOSE THIS TOPIC. it is going around in tight little circles with people who now what they are talking about being continuely bombarded with people adament to debunk well established laws and theories of physics and aerodynamics. face it people, this thread has copped way too much attention for what it is. PLEASE CLOSE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Originally posted by ghost
Unless I misunderstand you, I think I see why we can't seem to agree!
Now according to the laws of physics, when two oppisite forces of Equal strength act on the same object, but in oppisite directions, they cancell each other out. This makes the Net Force equal to ZERO. With a net force of Zero acting on the plane, it will remain stationary(Newton's First Law of Motion, A.K.A Inertia).
"A plane is standing on a runway that can move (some sort of band conveyer). The plane moves in one direction, while the conveyer moves in the opposite direction. This conveyer has a control system that tracks the plane speed and tunes the speed of the conveyer to be exactly the same (but in the opposite direction). Can the plane take off?"
” A plane is standing on a runway that can move
The plane moves in one direction,
while the conveyer moves in the opposite direction.
This conveyer has a control system that tracks the plane speed and tunes the speed of the conveyer to be exactly the same (but in the opposite direction).
There's a new aviation myth running around the Internet. It involves a conveyer-belt runway and misuse of aerodynamics and ... well, it's better if AVweb's Rick Durden explains it all himself in The Pilot's Lounge.....
Originally posted by waynos
No, read it again. The plane is standing still on a runway that can move, not one that is moving already. That is an interpretation you have added, which you just said we should not do.
The runway tracks the planes speed and matches it exactly, therefore the plane moves before the runway does, even if only fractionally, therefore the biggest obstacle to its progress, inertia, has already been overcome.
Your assumption that the gear will 'most likely' collapse is no more valid than my assumption that it wont and so in theory, which is all this can ever be, it will fly.
Def. of exactly:
In an exact manner.
With precision or absolute conformity.
Originally posted by mxboy15u
Landing gear can take some extreme punishment, it won't fail from this at all. The plane doesn't have hardly any rolling resistance, the engines can overcome any extra due to the increased speed of the wheels the plane will take off.
Originally posted by Kruel
If you had no airspeed at all (ie. the treadmill), it shouldn't take off right?
The treadmill idea would have the same effect of taking off in the same direction of the wind, with the wind being equal to the speed of the plane on the runway.