Funny pic/gif thread...

BaconAZB said:
If two jets take off in opposite directions from the same airfield, at a starting point along the equator, with one jet going Mach 1 and the other going Mach 2, their flight path stays along the equator line, then when will the next free stream for some big money one pocket action be on?
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The date for the next free stream of big money one pocket would range between the day before the planes leave, to two days after, depending on the time zone they start from.


Assuming they leave at the same time, Plane 2 has a 9 hour advantage to settle into his hotel and get in some practice time.
 
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jimmyco said:
It must move forward to create lift, barring a hurricane.
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Yes, I was thinking of a hurricane for my example - because I mistakenly thought the original premise was that the plane remained still. I see now that wasn't stated.

But thinking about that made me realize the original premise is impossible: if the belt is designed to go the opposite direction at the same rotation speed as the tires, the tires will speed up (since the plane isn't slowing down), increasing the belt speed again, then the tires, etc. If this all happens at the speed of electricity, both the tires and the belt would tear themselves apart almost immediately.

pj
chgo
 
California.jpg

………..
 
It would move forward though. The wheels aren't powered the engines produce thrust that pushes on the plane. Think of it this way. Take your toy hotwheels car and hold it on a treadmill. It doesn't matter how fast the treadmill is moving you can still move the car up it the wheels are just spinning faster.

Sent from my SM-G965U using Tapatalk
 
I try to post funny and interesting pictures that people like, but apparently it's the "plane" ones that everyone enjoys the most. :grin:
 
Mr Slate said:
I try to post funny and interesting pictures that people like, but apparently it's the "plane" ones that everyone enjoys the most. :grin:
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Jettison that thought as plane talk is "currently" way behind the amplified traffic surge brought on by electric illumination:grin-square:
 
Patrick Johnson said:
Yes, I was thinking of a hurricane for my example - because I mistakenly thought the original premise was that the plane remained still. I see now that wasn't stated.

But thinking about that made me realize the original premise is impossible: if the belt is designed to go the opposite direction at the same rotation speed as the tires, the tires will speed up (since the plane isn't slowing down), increasing the belt speed again, then the tires, etc. If this all happens at the speed of electricity, both the tires and the belt would tear themselves apart almost immediately.

pj
chgo
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So the treadmill moving that fast causes problems, but not the fact that getting a plane on a treadmill in the first place isn’t? We’re talking mostly theoretical here. But to sit there and say that a plane with zero airspeed will take off is absurd. What’s even more absurd seems to be your understanding of physics. The friction of the tires/bearings/brake assemblies interaction with the treadmill really means the plane is limited to how fast it can move backwards in the first place. So I shall repeat, a plane that is stationary will never achieve flight without air moving over its wings. Also the thrust from a turbine engine does not generate air flow over the wings unlike what you’re assuming.
 
Hits 'em Hard said:
So the treadmill moving that fast causes problems, but not the fact that getting a plane on a treadmill in the first place isn’t? We’re talking mostly theoretical here. But to sit there and say that a plane with zero airspeed will take off is absurd. What’s even more absurd seems to be your understanding of physics. The friction of the tires/bearings/brake assemblies interaction with the treadmill really means the plane is limited to how fast it can move backwards in the first place. So I shall repeat, a plane that is stationary will never achieve flight without air moving over its wings. Also the thrust from a turbine engine does not generate air flow over the wings unlike what you’re assuming.
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The thrust from the turbine engine will move the plane down the runway length (as described in the gif) treadmill at whatever speed is needed to take off, the fact that the treadmill is going the other direction has (almost) zero affect (there will be some friction) on the trubines propelling the plane fast enough to take off.

Nobody said the plane wasn't going to move and the wheels are simply rotating and are not being driven. The plane will take off.
 
Hits 'em Hard said:
...to sit there and say that a plane with zero airspeed will take off is absurd.
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I agree. Where have I said that?

...a plane that is stationary will never achieve flight without air moving over its wings.
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I agree. Where have I said otherwise?

the thrust from a turbine engine does not generate air flow over the wings unlike what you’re assuming.
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I agree. Where have I assumed that?

It seems we differ on what words mean.

pj
chgo
 
It most certainly might

There is a very simple answer to this if you will only look , you
will or should I say you might believe that it is as it should never
have gone there in the second place. I realize that many have tried
and even those that forget or choose not to forget will some day
be held accountable even though. So in the long run it may be the
"mail Man" who is after all is said and done.
jack
 
jackpot said:
There is a very simple answer to this if you will only look , you
will or should I say you might believe that it is as it should never
have gone there in the second place. I realize that many have tried
and even those that forget or choose not to forget will some day
be held accountable even though. So in the long run it may be the
"mail Man" who is after all is said and done.
jack
Click to expand...
What he said.

pj
chgo
 
jackpot said:
There is a very simple answer to this if you will only look , you
will or should I say you might believe that it is as it should never
have gone there in the second place. I realize that many have tried
and even those that forget or choose not to forget will some day
be held accountable even though. So in the long run it may be the
"mail Man" who is after all is said and done.
jack
Click to expand...
Quick, somebody cut him off.
 
Hits 'em Hard said:
You must have not understood the premise of the question to start with. The plane doesn’t move forward, at all, never. Think about it. The whole point of including the conveyor belt is the trick of the question. Chain the plane in place. The engines, whether turbine or propellor will not cause lift on the wings. Engine speed could be maxed out. If air speed is zero, then there is zero lift.
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I understood it perfectly. You are the genius who thinks that the plane would not be moving forward because of the treadmill. Maybe the OP thought the same thing. You both could not be more wrong.

Your brain is tied to the misconception that the plane is propelled by it's wheels, like a car would be..

Think of this.....
You have a Corvette on a treadmill, and both the wheel speed and the treadmill speed are perfectly offsetting each other, so there is no relative movement. Then.....They pull off the tarp off the back of the car revealing a 15,000 lb. thrust jet engine. Somebody turns on the great big freakin' jet engine attached to the back of the corvette. So you think that the car would still not move forward relative to the treadmill?
.
Heck, even think of this....as the jet engine thrust increases, take the car out of gear. Now the car's wheels are mechanically disconnected from the new drivetrain (jet engine) Increase the thrust and the car will move forward - the wheels will spin faster and faster as the thrust is increased and the relative car speed increases.
 
JohnnyOzone said:
I understood it perfectly. You are the genius who thinks that the plane would not be moving forward because of the treadmill. Maybe the OP thought the same thing. You both could not be more wrong.



Your brain is tied to the misconception that the plane is propelled by it's wheels, like a car would be..



Think of this.....

You have a Corvette on a treadmill, and both the wheel speed and the treadmill speed are perfectly offsetting each other, so there is no relative movement. Then.....They pull off the tarp off the back of the car revealing a 15,000 lb. thrust jet engine. Somebody turns on the great big freakin' jet engine attached to the back of the corvette. So you think that the car would still not move forward relative to the treadmill?

.

Heck, even think of this....as the jet engine thrust increases, take the car out of gear. Now the car's wheels are mechanically disconnected from the new drivetrain (jet engine) Increase the thrust and the car will move forward - the wheels will spin faster and faster as the thrust is increased and the relative car speed increases.
Click to expand...



Does this matter? “The conveyor belt is designed to exactly match the speed of the wheels, moving in the opposite direction.”


Sent from my iPhone using AzBilliards Forums
 
It is amazing how you put an aircraft on a treadmill and for what ever reason, people think it can fly. Yet the same people no doubt can visualise themselves on a tread mill going no where and even can watch a tv. It should be obvious that with no air over the wings the aircraft can not fly , unless it has VTOL properties.
So funny.
 
JohnnyOzone said:
I understood it perfectly. You are the genius who thinks that the plane would not be moving forward because of the treadmill. Maybe the OP thought the same thing. You both could not be more wrong.
Click to expand...

If the OP only "maybe" thought the same thing, how can you be certain that he couldn't be more wrong when no answer was ever stated either way? Maybe the OP's answer is that the plane would fly backwards and upside down at the same time. That would definitely be more wrong. Asking for a friend.
 
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