will it take off?

[BillyP]

Let me see if I can explain why I don't think a normal plane will take off under this scenario.

There's a plane on the runway. It has a conveyor belt under the wheels. When the plane wheels start to roll, the conveyor goes in the opposite direction. We all agree on this, I think.

You're standing at one of the plane's wing tips but off the conveyor. The plane revs up and starts moving forward. The conveyor kicks in and moves in the opposite direction. The wheels spin faster and faster but the conveyor does too. You're still at the plane's wing tip because the wheels nor plane hasn't had any forward travel, relative from where you're standing.

The plane doesn't have any air blowing across it's wings, other than what's created by the props or jet engines.

The way I see it is, the plane can only take off if it has enough lift created from the air speed of the prop or jet engine over the wings.

I can't see a normal plane taking off. Unless there's enough wind speed created by the spinning conveyor, to create a substantial wind speed.

 

[HTWT]

You're standing at one of the plane's wing tips but off the conveyor.

You are stationary relative to the plane but not the ground or whatever the plane was stationary relative to before it began to move. The convayor only moves in response to the plane moving. You have just became a wing rider. Good luck.

 

[BTDT]

You're standing at one of the plane's wing tips but off the conveyor.

You are stationary relative to the plane but not the ground or whatever the plane was stationary relative to before it began to move. The convayor only moves in response to the plane moving. You have just became a wing rider. Good luck.

Hope you have your parachute on, your gonna need it!

 

[RayH]

Ray
The answer is yes. We transmit between ground and planes or between planes at the speed of lignt, not the speed of sound.

You are correct about the transmission speed but what about the sound coming from the speaker to your ears? Its traveling the speed of sound. If you are going faster, how can you hear it?

 

[RayH]

Let me see if I can explain why I don't think a normal plane will take off under this scenario.

There's a plane on the runway. It has a conveyor belt under the wheels. When the plane wheels start to roll, the conveyor goes in the opposite direction. We all agree on this, I think.

You're standing at one of the plane's wing tips but off the conveyor. The plane revs up and starts moving forward. The conveyor kicks in and moves in the opposite direction. The wheels spin faster and faster but the conveyor does too. You're still at the plane's wing tip because the wheels nor plane hasn't had any forward travel, relative from where you're standing.

The plane doesn't have any air blowing across it's wings, other than what's created by the props or jet engines.

The way I see it is, the plane can only take off if it has enough lift created from the air speed of the prop or jet engine over the wings.

I can't see a normal plane taking off. Unless there's enough wind speed created by the spinning conveyor, to create a substantial wind speed.

Planes fly because of lift generated from air flowing over the flight surfaces. They fly when their AIRSPEED is high enough to produce enough lift to overcome their weight. GROUNDSPEED has absolutely nothing to do with a planes ability to fly. The only function of wheels on a plane is to allow them to move on the ground irregardless of what speed the ground is moving.

 

[BTDT]

If a plane with its wheels down is sitting on a conveyor, the conveyor is spinning faster than the speed of sound, will the plane break the sound barrier? Oh my head hurts.

 

[BillyP]

Hope you have your parachute on, your gonna need it!

Why would I need a parachute? I'm not on the plane. I'm standing 'at' the wing tip but off the conveyor. Regardless of whether I'm right or wrong on the plane taking off, I'll be standing still.

One thing I'm certain of is I won't be leaving the ground

 

[Iowachild]

Planes fly because of lift generated from air flowing over the flight surfaces. They fly when their AIRSPEED is high enough to produce enough lift to overcome their weight. GROUNDSPEED has absolutely nothing to do with a planes ability to fly. The only function of wheels on a plane is to allow them to move on the ground irregardless of what speed the ground is moving.

But you had better pay attention to groundspeed because that's how fast you get from point A to point B. Fuel burn doesn't care about your airspeed!

 

[BillyP]

GROUNDSPEED has absolutely nothing to do with a planes ability to fly

I agree there, it has nothing to do with it's ability to fly. The question is can it take off! Ground speed definitely effects the ability to take off. That is until the wheels get off the ground. Then airspeed comes in.

 

[BTDT]

Why would I need a parachute? I'm not on the plane. I'm standing 'at' the wing tip but off the conveyor. Regardless of whether I'm right or wrong on the plane taking off, I'll be standing still.

One thing I'm certain of is I won't be leaving the ground

I guess myself and the poster about you being a wing rider were both mistaken. I thought you were standing at the wingtip on the plane. In that case, you will look kind of funny standing on the ground with your parachute on watching the plane take off into the wild blue yonder without you.