Plane on a treadmill

Cray

Honorary Master
Joined
Oct 11, 2010
Messages
34,549
I must be dumb

Ignore the wheels, thrust is created by the engine turbines/propellers, the thrust acts on the environment. The wheels simply turn in response to that thrust and being in contact with the treadmill.
 

Ho3n3r

Honorary Master
Joined
Apr 5, 2012
Messages
17,058
Obviously this isn't a serious question...

Everyone knows that it needs sufficient airspeed to have any chance of lifting. It's a low pressure area above the wings that create lift, which is created by faster airflow over the top of the wings.

The engine thrust on its own won't do anything if the airspeed is 0, or too low. The engines are the ones creating the airspeed.
 

Vegeta

Executive Member
Joined
Oct 17, 2007
Messages
8,377
GET IN THE CORNER AND TURN IN YOUR INTERNET PRIVILEGES
Seriously! And you guys mock Zuma & Julius. What school did you attend? Call your science teacher and listen to his/her sobs on the phone while you spew this bs.
 

Sinbad

Honorary Master
Joined
Jun 5, 2006
Messages
81,151
Seriously! And you guys mock Zuma & Julius. What school did you attend? Call your science teacher and listen to his/her sobs on the phone while you spew this bs.

Please explain how a plane can fly if the wheels are what drive it forward?
 

Sinbad

Honorary Master
Joined
Jun 5, 2006
Messages
81,151
And I'd like all of you to work together to explain just how the treadmill stops the plane moving forward.
 

Cray

Honorary Master
Joined
Oct 11, 2010
Messages
34,549
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.

Seriously! And you guys mock Zuma & Julius. What school did you attend? Call your science teacher and listen to his/her sobs on the phone while you spew this bs.

You aren't doing yourself any favours here... Care to explain how the following two planes manage to take off, no wheels involved...

965996-flying-boat.jpg

gambit_plane.jpg
 

Klipdrif

Well-Known Member
Joined
Sep 15, 2011
Messages
199
Ignore the wheels, thrust is created by the engine turbines/propellers, the thrust acts on the environment. The wheels simply turn in response to that thrust and being in contact with the treadmill.
I agree, only if we are talking about a RAF harrier jump jet which can direct its thrust in the z direction. As far as I am concerned the turbines in question only act in the x direction. I am focusing on the wheels as it is the key in this argument. Plane is standing still = 0 lift/z force. You are going to remain on the ground.
 

Sinbad

Honorary Master
Joined
Jun 5, 2006
Messages
81,151
I agree, only if we are talking about a RAF harrier jump jet which can direct its thrust in the z direction. As far as I am concerned the turbines in question only act in the x direction. I am focusing on the wheels as it is the key in this argument. Plane is standing still = 0 lift/z force. You are going to remain on the ground.

OK, let's say the engines are providing thrust of 1000N along the x axis

You say the treadmill is countering that thrust? How? How is it exerting 1000N of force on the plane?
 

Vegeta

Executive Member
Joined
Oct 17, 2007
Messages
8,377
My goodness it has nothing to do with wheels(the jet engine provides the thrust those wheels roll freely) its about movement. You need movement(through air) for lift. All those planes move forward right? If this silly treadmill idea keeps the plane in one spot its not going to lift. If the plane moves off the treadmill and down the road then it will fly.

If you have a massive fan that can move air over and under the wings sure then i suppose the plane can remain in one spot. But guys you need thrust and lift!

You guys are straight up dumb
 

Cray

Honorary Master
Joined
Oct 11, 2010
Messages
34,549
I agree, only if we are talking about a RAF harrier jump jet which can direct its thrust in the z direction. As far as I am concerned the turbines in question only act in the x direction. I am focusing on the wheels as it is the key in this argument. Plane is standing still = 0 lift/z force. You are going to remain on the ground.

How does the treadmill affect the thrust being generated, how is it possible for a treadmill to counteract the force of those engines?

You can do this yourself, get a toy truck and hold it in place on a treadmill, the wheels will spin at the rate of belt. Now push the toy truck forward using your hand.. by your logic this is impossible but you know it can be done, the toy truck wheels will spin more than the rate of the belt and you will be able to move the truck forward. In this scenario, the force of the engines is doing exactly the same job as your hand.
 

Sinbad

Honorary Master
Joined
Jun 5, 2006
Messages
81,151
My goodness it has nothing to do with wheels(the jet engine provides the thrust those wheels roll freely) its about movement. You need movement(through air) for lift. All those planes move forward right? If this silly treadmill idea keeps the plane in one spot its not going to lift. If the plane moves off the treadmill and down the road then it will fly.

If you have a massive fan that can move air over and under the wings sure then i suppose the plane can remain in one spot. But guys you need thrust and lift!

You guys are straight up dumb

HOW WILL THE ****ING TREADMILL KEEP THE PLANE IN ONE SPOT?!
 

Cray

Honorary Master
Joined
Oct 11, 2010
Messages
34,549
My goodness it has nothing to do with wheels(the jet engine provides the thrust those wheels roll freely) its about movement. You need movement(through air) for lift. All those planes move forward right? If this silly treadmill idea keeps the plane in one spot its not going to lift. If the plane moves off the treadmill and down the road then it will fly.

If you have a massive fan that can move air over and under the wings sure then i suppose the plane can remain in one spot. But guys you need thrust and lift!

You guys are straight up dumb

I think you are trolling...
 

xumwun

Expert Member
Joined
Jul 30, 2006
Messages
3,151
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.
That won't happen, it will still move forward despite being on the treadmill.
There are some videos earlier in the thread showing this happening.
 
Top