Plane on a treadmill

[medicnick83]

This thread just makes me laugh.

 

[Billy]

[video=youtube;-EopVDgSPAk]http://www.youtube.com/watch?v=-EopVDgSPAk[/video]

Even a 5 year old understands

 

[oober]

[video=youtube;-EopVDgSPAk]http://www.youtube.com/watch?v=-EopVDgSPAk[/video]

Even a 5 year old understands

Damn that guy makes me cry...

 

[Rosaudio]

Oh wait I completely understand it now.

Doesn't matter if the treadmill is rolling at 1000kph backwards .. the plane will still be able to take off at 300kph forwards.

 

[LazyLion]

 

[LazyLion]

[video=youtube;YORCk1BN7QY]https://www.youtube.com/watch?v=YORCk1BN7QY[/video]

 

[kolaval]

But in the video above the plane is moving forward?
Then of course it would go up.

Should the treadmill not cause the plane to stay stationary?
Or rather, if the plane stood on poles (no wheels) would it be able to take off?

 

[Sinbad]

But in the video above the plane is moving forward?
Then of course it would go up.

Should the treadmill not cause the plane to stay stationary?
Or rather, if the plane stood on poles (no wheels) would it be able to take off?

On poles stops it moving. How would the treadmill stop it moving?

 

[kolaval]

How would it move on the treadmill, if the treadmill matched its moving speed and hence kept it stationary?

 

[Sinbad]

How would it move on the treadmill, if the treadmill matched its moving speed and hence kept it stationary?

Why would you think the treadmill would affect thrust from the engine? It's no a car, it's not driven by the wheels. They rotate freely.

 

[Georgios]

What a silly question. The IQ of the world has dropped.

 

[kolaval]

Because thrust causes the plane to move forward, causing airflow, causing lift.
To move forward the plane needs wheels/skis etc.
If putting the plane on stilts would not allow it to lift off, then so should a treadmill if it keeps the plane stationary?

 

[kolaval]

What a silly question. The IQ of the world has dropped.

No, most of us have jobs to do, kids to raise and bills to pay, so we don't spend our time pondering these questions.

 

[bwana]

No, most of us have jobs to do, kids to raise and bills to pay, so we don't spend our time pondering these questions.

Always a good idea to spend some time each day thinking.

 

[Sinbad]

Because thrust causes the plane to move forward, causing airflow, causing lift.
To move forward the plane needs wheels/skis etc.
If putting the plane on stilts would not allow it to lift off, then so should a treadmill if it keeps the plane stationary?

Please explain how the treadmill stops the plane moving forward.
Draw pictures if necessary. Maybe a free body forces diagram?

 

[Ares1000101]

Guys guys. For a plane to lift off and fly it needs air going over the wings to generate lift. The conveyor belt is dissipating any forward movement that the engines are creating. (based on the statement that the treadmill is made to match wheelspeed). The plane is gona stay in one spot.

 

[Sinbad]

Guys guys. For a plane to lift off and fly it needs air going over the wings to generate lift. The conveyor belt is dissipating any forward movement that the engines are creating. (based on the statement that the treadmill is made to match wheelspeed). The plane is gona stay in one spot.

Go and stand in the corner, you're too stupid to be allowed to internet.

 

[Hamster]

Go and stand in the corner, you're too stupid to be allowed to internet.

Why is he wrong? If the treadmill matches the speed of the plane the plane effectively is stationary (lion's pic). Wheels might be moving but no airflow over the wings.

What did I miss?

 

[Sinbad]

Why is he wrong? If the treadmill matches the speed of the plane the plane effectively is stationary (lion's pic). Wheels might be moving but no airflow over the wings.

What did I miss?

Why would the treadmill stop the plane moving? It's not a car, the engine doesn't drive the wheels. The wheels are freewheeling. All that would happen is the wheels turn twice as fast as they would on a normal runway.

/sets up hamster wheel in corner

 

[Hamster]

Why would the treadmill stop the plane moving? It's not a car, the engine doesn't drive the wheels. The wheels are freewheeling. All that would happen is the wheels turn twice as fast as they would on a normal runway.

/sets up hamster wheel in corner

...fair point