Plane on a conveyor belt in a wind tunnel

[AJS-]

Would it take off while stationary if the wind tunnel wasblowing from the front at the same speed as the conveyor belt was running backwards and the plane trying to go forwards at enough speed to take off?

[Silent_Assassin]

Ahem.... I'll just wait here and watch out this pans out...

[GTO Scott]

Oh christ not another one....

Yes.

[sidekickdmr]

plane + conveyer belt= no

Plane + conveyer belt + wind tunnel = yes

[Snake the Sniper]

Here we go again......

[AJS-]

Actually, what if the plane was switched off, but got sufficient lift from the wind tunnel to take off, while moving backwards on the conveyor belt?

[RDE]

AJS- said:

Actually, what if the plane was switched off, but got sufficient lift from the wind tunnel to take off, while moving backwards on the conveyor belt?

It would take off. And then decelerate, descend and be driven into the back of the wind tunnel by the belt. What do you mean by 'switched off'?

[ShadownINja]

What if the wind tunnel was mounted in reverse on the back of a large lorry driving at a speed equivalent to the wind in the tunnel?

[Owain]

What if the conveyor belt was run by a motorised hamster wheel?

[AJS-]

RDE said:

AJS- said:

Actually, what if the plane was switched off, but got sufficient lift from the wind tunnel to take off, while moving backwards on the conveyor belt?

It would take off. And then decelerate, descend and be driven into the back of the wind tunnel by the belt. What do you mean by 'switched off'?

If the engines weren't running. I'm not at my most eloquent this morning.

[Jonny671]

RDE said:

AJS- said:

Actually, what if the plane was switched off, but got sufficient lift from the wind tunnel to take off, while moving backwards on the conveyor belt?

It would take off. And then decelerate, descend and be driven into the back of the wind tunnel by the belt. What do you mean by 'switched off'?

Hes got a good question actually..

What if the plane had no engines, just flaps on the wings..

Would it take off under the same circumstances?

[speedfreaky]

What if we all shot ourselves the next time this question is asked?FFS!

[Nic Jones]

When we test aircraft models in the wind tunnel as the wind speed increases/angle of attack increases the aircraft takes off (on the test bed) and the screen can tell us how much lift it generates.

Obviously it doesn't go backwards because it's fixed to the leverage arm of the tunnel and it doesn't go forward because there is no thrust.

It really isn't a hard concept to grasp.

[HRG]

Jonny671 said:

RDE said:

AJS- said:

Actually, what if the plane was switched off, but got sufficient lift from the wind tunnel to take off, while moving backwards on the conveyor belt?

It would take off. And then decelerate, descend and be driven into the back of the wind tunnel by the belt. What do you mean by 'switched off'?

Hes got a good question actually..

What if the plane had no engines, just flaps on the wings..

Would it take off under the same circumstances?

Yup. I used to have a microlight and you could fly backwards if the wind was strong enough.

[speedfreaky]

Jonny671 said:

RDE said:

AJS- said:

Actually, what if the plane was switched off, but got sufficient lift from the wind tunnel to take off, while moving backwards on the conveyor belt?

It would take off. And then decelerate, descend and be driven into the back of the wind tunnel by the belt. What do you mean by 'switched off'?

Hes got a good question actually..

What if the plane had no engines, just flaps on the wings..

Would it take off under the same circumstances?

For what its worth ,the plane doesnt need engines to fly - gliders anyone?In this example....Oh bks ,cant be bothered ,I'm off to top myself (or i might just hang around - might be more fun!)

[RDE]

Well if you've got a wind tunnel, provided the aircraft is mounted somewhere, you don't need engines.

[stephen300o]

AJS- said:

Would it take off while stationary if the wind tunnel wasblowing from the front at the same speed as the conveyor belt was running backwards and the plane trying to go forwards at enough speed to take off?

The wind blowing from the front has just given it a nice headwind, increasing lift. Blowing takeoff speed from the rear though...

[AlpineWhite]

Perhaps the 'Mythbusters' TV program could do a feature on this, to settle it for once and for all.


















Oh, wait....

[stephen300o]

AlpineWhite said:

Perhaps the 'Mythbusters' TV program could do a feature on this, to settle it for once and for all.


















Oh, wait....

They setup a wind tunnel?