Let's say you had a giant treadmill with an airplane on it

[aussieflyboy]

dutchman, they are saying that it would fly because the plane would drag its ass down the treadmill just like it was a runway. Yes, it would... we accept that, and yes if that was the case it would fly.

The assclown who posted this question played us for fools, the question stated a given which was clearly not physically possible.

I know how to solve this whole F**King problem... buy a helicopter!

 

[unreal]

Not the same scenario.

You guys think we have too much time on our hands? Think about the guy who made that graphic.

Yeah, I know it's not. It's just a funny graphic is all.

 

[unreal]

1) You need to get laid

2) The original question assumes the aircraft does not move, It states "As you add power and begin to move for the takoff roll, the treadmill speeds up and keeps the plane in the same relative position. As the plane goes faster, the treadmill speeds up, always maintaining the aircraft's relative position.

1) Yes, yes I do. I didn't make the graphic though.

2) Yes yes, I know. I post on about 2039840234 webboards and I've seen this thread on all of them. I'm just messing around.

 

[Flyingdutchman]

3) just giving u crap

 

[unreal]

3) just giving u crap

No worries.

 

[aussieflyboy]

The question is whether or not the belt can provide enough backwards force though friction to equal the force applied by the engines. The answer is: YES. You can see this by placing a rollerblade on a treadmill. As you increase the speed of the treadmill, the force applied by your hand to keep the rollerblade stationary increases. The belt could potentially spin the wheels fast enough in the opposite direction to hold the plane stationary. If you neglect friction in the wheel bearings, the plane takes off.

As far as I can tell, THIS was the only guy dopey enough to suggest that the plane would stay in the same position AND take off!

Congratulations mate!!!

By the way, it's clear that we were played for a fool.

The correct answer is that there's no answer, the question's f**ked.

Time for bed

 

[Edge540]

Insomnia sets in......

I googled this question and it got 249,000 hits. Nuts.

http://www.google.com/search?hl=en&lr=&safe=off&q=airplane+treadmill+will+it+fly&btnG=Search


........

 

[belchfire]

1) You need to get laid

2) The original question assumes the aircraft does not move, It states "As you add power and begin to move for the takoff roll, the treadmill speeds up and keeps the plane in the same relative position. As the plane goes faster, the treadmill speeds up, always maintaining the aircraft's relative position.

The question is well and truely fracked!

"as the plane goes faster"???

Wait!

If the plane "goes faster" how can it be "maintaining the aircraft's relative position"???

They are mutually exclusive! The plane cannot go faster and stay in the same relative position!

Now, would you naysayers like to take a shot at telling the rest of us what the question really meant to say?

 

[Flyingdutchman]

Read the question again. The treadmill plays a crucial roll in the
plane's acquistion of speed as long as the plane is not airborne. If
it is still on the ground and the wheels are rolling forward at a rate
to move the plane at, say 150 mph, the conveyor belt is pulling it
backwards at the same 150 mph. So relative to the stationary earth,
the plane is going exactly nowhere. This is like going up the steps
of the down escalator at the same rate of speed the steps are going
down - you get nowhere. And if you are going nowhere and the wind is
not blowing, you will not generate any lift at all and therefore will
not be able to take off.

If wheels do not have any friction, you will slide on them, not roll.
This is like a car that slides on the ice. However, the clear
intention of the questioner is that the wheels have enough friction to
prevent sliding on the conveyor belt. Therefore the plane is not
decoupled from the belt's motion. And in the scenario described, will
not be able to take off.

 

[belchfire]

I read the question again.

It still says "As the plane goes faster" ...

It does not state "as wheel speed increases"

It states "as the plane goes faster"

I say again the question is fracked!

Get it?

But thanks for taking your time to explain what the question really meant. Given that your side has blasted the it will fly side for trying to reinterpret what the question really meant...I maintain my relative position.

The question is fracked!