Can an airplane takeoff from a treadmill?

[Quagmire]

CAD, that would be funny to see some dude go into the gym with a set of rollerblades and an office chair. Wonder if they would let him in.

 

[Montag]

Hooold onnn, hold on!!!!


....the plane is piloted by Ditka.

 

[shotgun427]

If we are talking about an actual plane and not some theoretical plane then I could easily see a treadmill that could be built such that it could make a plane not take off. One that accelerates really fast.

People want to act like the wheels are not part of the equation, but they certainly are. If not, the hot wheel on a tread mill wouldn't move.

 

[ctrl+alt+del]

The wheels are part of the equation, just not a significant one once jet thrust is applied. You can keep a hot wheel from moving backwards on a treadmill with a human hair, regardless of how fast the treadmill is going.

 

[MilkmanDan]

 

[CottonEyedHorn]

 

[Not Shinola]

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[Ag with kids]

Gosh...

Doesn't everyone understand that the only way that airplanes move forward is by the thrust provided by their wheels...even in the air????

 

[ctrl+alt+del]

Milkman, you can reimburse me for my laptop via PayPal.

 

[Not Shinola]

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[Statalyzer]

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[S197HQQKEM]

here is the explanation of how this can actually work, Airbus has spent billions of euros on this very question, which is obvious since that appears to be an Airbus attempting to take off of that treadmill. Found this on the Airbus website.

"Bonsoir - ici nous avons les diagrammes modernes d'un mouton anglo-français ... maintenant ... baa-aa, baa-aa... nous avons, dans la tête, le cabinc. Ici, on se trouve le petit capitaine Anglais, Monsieur Trubshawe."

Airbus Treadmill White Paper

The upshot of this is that it can only work if the aircraft is Huge, thus the rationalle for the A-380 which is specifically designed to take off from treadmills.

Howard Hughes attacked the same question in the 40's. Thus leading to the push-up bra for Jane Russell.

 

[pmg]

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[The Dog]

it will not take off. there is no airflow over the wings. put an aircraft on a treadmill like device and you have turned it into an ugly car.

 

[Statalyzer]

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[LongIslandIceSIP]

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[S197HQQKEM]

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[madscientist]

X = turbine

(above turbine/wing) no airflow
<-- X <---
<--- X <---
<-- X <----
<--- X <----
<-- X <-----
(below turbine/wing) no airflow

no airflow since the plane is NOT moving with respect to the ground.


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based on this explanation, a plane cannot take off at all even from solid ground since the only airflow is in front of and behind the jet engines.

 

[LongIslandIceSIP]

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[milk_monitor]

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[Bookman]

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[madscientist]

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[kangsta]

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[S197HQQKEM]

except for the fact that VonSchleeden is Juanita VonSchleeden famous quantum physicist, aerodynamicist and piccolo virtuoso with gigantic breasteses, don't you guys know anything at all?

 

[S197HQQKEM]

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[andaval]

This is the best thread I've read in months. It's hilarious to see people explaining the right answer for six pages, only to see another 'NO, there is no airflow over the wings! QED!' type post.

If people have settled down on this, how about revisiting this scenario:

You are a contestant on a game show where there is one prize hidden behind one of three doors. You make your guess about which door the prize (which you really want) is hidden behind. The host then reveals to you (as he said he would beforehand) an empty door out of the two remaining doors, and offers to let you change your door selection. Should you switch your door choice to the other unrevealed door, stay with your current choice, or are they equally likely to contain the prize?

 

[Not Shinola]

thats an easy one. Switch.

 

[S197HQQKEM]

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[CottonEyedHorn]

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[longhrnfan]

I've never seen such a complicated thread in my life. I don't understand how the plane can lift off it is is not moving relative to the ground or air? Dont you need air moving under the wing for the plane to fly?

Someone needs to explain this to me with pictures.

Everyone knows that the plane is not propelled by its wheels.