Originally Posted by ibm
I love the way he starts after nearly 300 posts with:
OMG he's right! I can't believe no-one has pointed this out beforeI've not read any of the posts before but the plane won't be creating any down force so it can't take off.
You're missing the point though Blademrk, the treadmill Matches the speed of the wheels so if the plane even moves an nanometer it all cascades into infinite speed chaos as the plane hurtles off the treadmill infinitely faster than the speed of light, making a mockery of all that is good and pure in Physics and probably destroying the universe somehow.
Moral of the story: If your plane is on a treadmill, for God's sake don't start it and if someone else does, get the hell out of there (preferrably to another dimension)
1.21 GIGAWATTS!!!!!
chicken, you are wrong so wrong.
as has been said many many times in the past 290 posts, the plane does take off as the treadmill will not prevent the thrust of air from the engines from propelling the plane forward and taking off.
Speed of treadmill and wheels is irrelevant.
as soon as the plane moves forward, a host of angry badgers playing violins will sprout from the earth shouting "long live cheesy beanos"
No no nopey no. What you are imagining 'speed of the wheels' means, is the speed measured ONLY AT THE TOP OF THE WHEEL, which is given by a trigonometric function that I guarantee you have never thought about before today. It's certainly not the normal interpretaion, you might just as well arbitrarily measure at the bottom of the wheel, which gives completely a different speed (matching both the speed and direction of the treadmill).
Heheh, you guys have been in this thread too long
1.21 GIGAWATTS!!!!!
There is no way the plane would take off from a treadmill.
Wheels moving at infinate velocity woule have no effect as the plane is not moving in relation to the air around it. It is only moving in relation to the treadmill floor.
If it could take off from a treadmill then surely this would mean that a plane could hover?
I accept that a plane could take off in a stationary position of you had a big enough fan to push air towards it at sufficient velocity for its wings to create the necessary air pockets.
Could the late comers please take some time to read the many many posts that have explained that the wheels are not driving the plane, they are just a means for the fuselage to stay off the ground and to change direction while not in the air.
even when taxiing, a plane is using the thust of it's engines to move around the airport.
What a stupid question. Who the hell is going to build a treadmill that industrial?
What about a bullet on a treadmill?
those dudes in white coats who are on on sundays i think.. they build retarded gadgets.
and yes. newcomers please read up. the chances are all of your arguments have been countered
Vodka
I still think this wouldnt work because the question states that the "treadmill is designed to go the same speed as the wheels" so if that was the case then that would mean that the jet engines are only putting out enough power for the aircraft to be stationary. If the question had not have stated that then.... yes the plane would take off.
speed wheels and belt moving.. totally irrelevant
the reason it wont work is cause the tires are probably not capable of moving the plane to takeoff speed as they will be moving at DOUBLE the speed usually needed. the plane may not be moving any faster but the wheels will be
Vodka
Christ.. third most popular topic (by post count) and all in under 5 days!
Surely that's a good thing for Hexus...once again proving it has some of the most active forums in the known intranet....
Although at least 98.666% of those posts were by Preston...he has no life you know....
sig removed by Zak33
okay, i just read this whole thread looking for knoxvilles response.
no avail
anyways, he got me on this, and we figured the WORDING of the QUESTION is where the confusion comes from.
THE PLANE DOES!!! TAKE OFF.
Think of it this way.
the treadmill is only going the same speed as the wheels, therein comes a mathmatic error that the treadmill would have to co an infinite miles per hour. as the plane accellerates and the treadmill accellerates it would soon get out of control.
anyways.
think of yourself on a treadmill with a rope coming from directly infront of you, now the treadmill goes as fast as you wheels, but with your arms you can pull youself forwards (the jet engines). therefore you are moving forwards, and the treadmill matches the speeds, but the treadmill only moves as fast as the wheels which are not in conjunction with the engines. so you are pulling yourself forwards, creating air pressure on the wings. forcing lift.
the common misconception - which i fell for too. is that the plane is stationary in relation to the treadmill, but its not, its moving forward.
with this in mind, the treadmill would need to be the length of a runway anyways.
so it is theoretically possible, but not in the slightest practical.
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