Plane on a treadmill

[kolaval]

I think the problem lies in real world VS theoretical.

Theoretically if the plane would stay in one place relative to the ground it would not take off(unless the engines were strong enough for stationary lift of).
If the plane moves it will take off

 

[Ares1000101]

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

Why don't you tell me where I'm wrong, mate.

 

[Sinbad]

Why don't you tell me where I'm wrong, mate.

I have in the posts above.
So have mythbusters.

 

[Billy]

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.

This was solved long before you joined MBB. The Physics have not changed since 2010.

 

[bwana]

Why don't you tell me where I'm wrong, mate.

Imagine you're on a treadmill at the gym but instead of running you've got roller-skates on and you're holding on to a rope. Now imagine someone in front of you pulls that rope, are you going stand still or move forward?

The engine and prop on the plane is the "rope" pulling the plane forward, lift is created by the forward movement, plane flies.

 

[xumwun]

I think the problem lies in real world VS theoretical.

Theoretically if the plane would stay in one place relative to the ground it would not take off(unless the engines were strong enough for stationary lift of).
If the plane moves it will take off

The plane will move though. The force driving it forward comes from the propeller/turbine and not from the wheels and so won't be cancelled out by the treadmill.

 

[rietrot]

This did also confused me a bit I'll be honest.

The airplane is not driven by its weels, not like a car. The weels rotate freely. So the thrust will start pushing the airplane forward and then the airplane will pick up speed and take off. The weels will just rotate faster than normal, but the weels don't affect the forward motion of the plane.

Putting the plane on stilts or anchoring the plane is different. then the plane won't take off

 

[LazyLion]

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?

Of course it is going to move forward. The propellor is turning creating thrust. Just ignore the wheels. Planes fly by propellors or jet engines. Not by wheels.

 

[Cray]

Of course it is going to move forward. The propellor is turning creating thrust. Just ignore the wheels. Planes fly by propellors or jet engines. Not by wheels.

This, the wheels are not motorized, the spin freely based on thrust provided by the engines. A good analogy would be a boat plane trying to take off, the underlying currents or movement of the water would make no difference.

 

[Sparkz0629]

So, if the planes engines are moving at 200km/h, and the treadmill is moving at 200km/h backwards, then it only means that the wheels of the plane are moving at 400km/h, however the plane will still be moving forward, hence it will be able to take off.

 

[Cray]

So, if the planes engines are moving at 200km/h, and the treadmill is moving at 200km/h backwards, then it only means that the wheels of the plane are moving at 400km/h, however the plane will still be moving forward, hence it will be able to take off.

Yup

 

[Vegeta]

lmao is this still going on? You guys are crazy, you need lift & thrust. You have thrust but no lift, no air moving under the wings.

 

[Sinbad]

lmao is this still going on? You guys are crazy, you need lift & thrust. You have thrust but no lift, no air moving under the wings.

GET IN THE CORNER AND TURN IN YOUR INTERNET PRIVILEGES

 

[Cray]

lmao is this still going on? You guys are crazy, you need lift & thrust. You have thrust but no lift, no air moving under the wings.

Thrust comes from the engines, not the wheels.

 

[Klipdrif]

Okey. I am getting confused as fsuk. As i understand the keyword here is "matches" i.e. Opposite reaction. The turbines generate forward movement but the treadmill generates equal rearward motion hence you not going anywhere today.

 

[Sinbad]

Okey. I am getting confused a fsuk. As i understand the keyword here is "matches" i.e. Opposite reaction. The turbines generate forward movement but the treadmill generates equal rearward motion hence you not going anywhere today.

IN THE CORNER WITH YOU AS WELL!

 

[Klipdrif]

I must be dumb

 

[Cray]

IN THE CORNER WITH YOU AS WELL!

 

[Sinbad]

I must be dumb

Acceptance is the first step to recovery


Planes are not driven by their wheels - otherwise, they'd kinda fall out the sky as soon as they took off.

 

[Vegeta]

Thrust comes from the engines, not the wheels.

So what? Yoh guys you need to go back to school seriously. You shouldn't be allowed to vote.

If a plane could take of from one spot with only the thrust of the engine they would do that and save the runway money and risk.