will it take off?

[DieselPower]

Well how do planes fly in a wind tunnel. That plane is sure sitting still just like the palne on the conveyor and they fly.
Did you look at Uler's equation. Rhymes with boiler not ruler.

This is nothing like the question in hand. In a wind tunnel air is being forced over wings by gigantic fan's. Large amounts of air moved over the wing make it lift off.

 

[shaley]

This is nothing like the question in hand. In a wind tunnel air is being forced over wings by gigantic fan's. Large amounts of air moved over the wing make it lift off.

Oh really. Props, Fans. Stationary airplanes. I thought there was a connection. But OK I was just throughing that out to cause some thought.

 

[DieselPower]

Let's study the theory of Flight and Bernoulli's equation.

"In order for an aircraft to rise into the air, a force must be created that equals or exceeds the force of gravity. This force is called lift. In heavier-than-air craft, lift is created by the flow of air over an airfoil. The shape of an airfoil causes air to flow faster on top than on bottom. The fast flowing air decreases the surrounding air pressure. Because the air pressure is greater below the airfoil than above, a resulting lift force is created. To further understand how an airfoil creates lift, it is necessary to use two important equations of physical science."

Theory of Flight

MIT ends the debate in my book. I'll let you argue with the mathematician's on wether or not to change the principles of science.

 

[shaley]

Speaking of flying. Shot this last spring. These fish are only 2 years old and they have learned this quite fast. Check out what is the the lower Tuna's mouth. It's hard to see in a low res version. It is a fish with wings in place of pec fins (about a 6" span) that get up out of the water and fly in order to escape. (sometimes).

 

[HTWT]

"a plane is standing on a movable runway( something like a conveyor).

as the plane moves

the conveyor moves but in the opposite direction.the conveyor has a system that tracks the speed of the plane and matches it exactly in the opposite direction.

What part of "as the plane moves" keeps the plane stationary.

 

[Tom_Veatch]

...
I'll let you argue with the mathematician's on wether or not to change the principles of science.

Errr...Uhhh, would that principle of science be Newton's 2nd Law of Motion? F=M*A or, in other words, A = F/M?

 

[shaley]

"a plane is standing on a movable runway( something like a conveyor).

as the plane moves

the conveyor moves but in the opposite direction.the conveyor has a system that tracks the speed of the plane and matches it exactly in the opposite direction.

What part of "as the plane moves" keeps the plane stationary.

I thought it was the part of the conveyor moving in the opposite direction.

 

[shaley]

DP. The theory of Flight. The continuity equation is the basis of why I think it will fly.

 

[Tim_in_IA]

The plane wont take off. The first post says that the conveyor matches the speed of the plane. If that is true, then there is no lift since the plane is standing still in the wind....

If the plane could go faster than the conveyor then it would take off, but since it can't it doesn't. That is interesting to think about though.....

Okay, after writing this I was on my hour commute home, and I realized that maybe this isn't this simple. There is almost a paradox here that the plane has to be moving at all for the conveyor to move the other direction. It is like a word problem, the answer is in the question.

I also began to understand those that said the wheels didn't make one bit of difference. The engines made forward thrust and the wheels would just be spinning much faster than normal. I retract my stationary argument and say that it will fly. I need a beer after that one....

 

[TrippleT]

If it is a harrier jet it will fly LOL . Now watch the fireworks!