quote:
No they aren’t. The wheels can be moving backwards and it doesn’t matter. The plane can move forwards while the wheels rotate opposite to the planes motion as along as the force of the turbine pulling it forward exceeds the force of gravity on the plane downwards…which I imagine it can since, you know, its a plane.

Not on the treadmill. If the wheels are touching the treadmill, and speeds are matched, the plane isn't moving.

Explain to me how the plane lifts off the ground if it isn't moving.

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Posted by cubsfan5150

Member since Nov 2007

15851 posts

Posted on 4/10/24 at 4:59 pm to SaintEB

quote:
Explain to me how the plane lifts off the ground if it isn't moving.

They are saying the aircraft would still move forward.

I suppose it’s possible if the thrust is great enough.

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Posted by LNCHBOX

70448

Member since Jun 2009

84535 posts

Posted on 4/10/24 at 4:59 pm to SaintEB

Stick a pencil through a washer. Put the washer on a moving treadmill. Can you move the pencil forward?

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Posted by Hateradedrink

Member since May 2023

1379 posts

Posted on 4/10/24 at 5:00 pm to SaintEB

quote:
If the wheels are touching the treadmill, and speeds are matched, the plane isn't moving.

False.

Let’s do a thought experiment.

If you hook up a F350 to a Prius, can the F350 pull the Prius forward?

What if all 4 wheels of the Prius were stationary and locked? The answer is yes, it could.

The only thing the wheels moving backward do is say to the planes engines “you now need to exceed the force of friction to move forward”. The engines can assuredly do that.

This post was edited on 4/10/24 at 5:01 pm

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