Unimployment blues, how I keep busy!!!!!

[Long Gone]

If a plane is on a treadmill, the treadmill is spinning and the plane tries to take off, does it fly?

"""It depends. Is the plane moving forward at all or is the treadmill simply spinning the planes wheels and the plane is motionless? If the plane is motionless it simply cannot fly unless a very, very, very, very strong wind was blowing directly at the plane and creating lift under the wings. Now, if the plane is moving forward it must have enough speed to create enough upward lift force to equal or outweigh the downward force of the plane to fly.

We had this same discussion while I was in college and I ended up speaking to one of my Aerospace Engineering professors about this. Basically, it is impossible for a plane to fly in this scenario.

Sorry about the long post but this question brings back memories of sitting around with a bunch of Engineers whom each had their own view on this."


I cannot believe that people with a clue on how a plane works can even debate such an idea! (no offense) A plane taking off has nothing to do with ground speed, only air speed.

BTW, I watched a fly land on the ceiling and he seems to fly with his nose up when he gets about 1 inch from the ceiling, then when his nose is about to touch, he lands.... some how.

 

[togwotee9]

"""


I cannot believe that people with a clue on how a plane works can even debate such an idea! (no offense) A plane taking off has nothing to do with ground speed, only air speed.



I'm pretty sure they were joking about the treadmill idea, but V2 for my plane is 78 knots. Which means the airspeed has to be 78 knots before lift is created under the wings to make my bird fly.

 

[revpilot]

"""


I cannot believe that people with a clue on how a plane works can even debate such an idea! (no offense) A plane taking off has nothing to do with ground speed, only air speed.



I'm pretty sure they were joking about the treadmill idea, but V2 for my plane is 78 knots. Which means the airspeed has to be 78 knots before lift is created under the wings to make my bird fly.

This is the riddle we're talking about:
The case of the plane and conveyor belt
This question posed to Cecil at The Straight Dope has occupied most of my day today:

Here's the original problem essentially as it was posed to us: "A plane is standing on a runway that can move (some sort of band conveyer). The plane moves in one direction, while the conveyer moves in the opposite direction. This conveyer has a control system that tracks the plane speed and tunes the speed of the conveyer to be exactly the same (but in the opposite direction). Can the plane take off?"

 

[Rixster]

since you have the time could you find out for us how close a fly gets to the ceiling before he flips over and lands on his feet?

I just blew lime slush out my nose all over my laptop!!! That is some funny stuff. I am going to start watching fly's!!!

 

[Rixster]

This is the riddle we're talking about:
The case of the plane and conveyor belt
This question posed to Cecil at The Straight Dope has occupied most of my day today:

Here's the original problem essentially as it was posed to us: "A plane is standing on a runway that can move (some sort of band conveyer). The plane moves in one direction, while the conveyer moves in the opposite direction. This conveyer has a control system that tracks the plane speed and tunes the speed of the conveyer to be exactly the same (but in the opposite direction). Can the plane take off?"

No, it can not. its not the speed of the plane its the wind crossing over the wings that make it fly. In that case the plane will never move. It will sit stationary no matter how fast the wheels are going.

 

[Dobber1]

Also: If you choke a smurf, what color does he turn?

I thought all Smurfs were EFI now?

 

[foxtail-offroad]

No, it can not. its not the speed of the plane its the wind crossing over the wings that make it fly. In that case the plane will never move. It will sit stationary no matter how fast the wheels are going.

You're confused... unless the plane is being propelled by it's landing gear it will take off. Planes are propelled by props or turbines, a conveyor belt moving underneath the plane will have very little effect on the free spinning wheels of the plane. The plane will take off with ease...

They already did this on Mythbusters!

 

[icr]

I thought all Smurfs were EFI now?

Hahahahaha!!!

 

[revpilot]

How did I get quoted for Rixters answer?

 

[Rixster]

WOW, How did that happen? thats crazy.

 

[mcgyver]

No, it can not. its not the speed of the plane its the wind crossing over the wings that make it fly. In that case the plane will never move. It will sit stationary no matter how fast the wheels are going.

that gets a big, LMAO!!!!!!




welcome to last year!