CDUB

Quit stalling

If you had a conveyor belt 300 ft long and could suspend it in the air and make it match the speed of a big passenger jet, could you make the jet land on the conveyor without falling off the edge?

Yeah but all the passenger will look like this:

The conveyor belt is moot.

DIE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!111

After the New Year I'll us 'DIE' in the search function to recall this thread.

Is the 'sad face' emoticon useable within the search function?

does the in-flight meal include chili with and/or without beans?

quote:

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with and/or without

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Now I'm really confused.


Which ... I freely admit ... is quite common.

just trying to spice up the thread

Try fanin sauce!

Oh jeebus, in Vegas a week and this is still at the top. LET IT DIE!

A new search item to employ ...

'RayRay99'

Thanks!





[This message has been edited by IIIHorn (edited 12/21/2006 12:47p).]

RayRay had beans in his chili, obviously. When will he take off?

[This message has been edited by Face (edited 11/20/2002 10:22a).]

[This message has been edited by HotardAg07 (edited 12/21/2006 1:01p).]

The conveyor belt is moot.

quote:

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I'm going to say that it's DEFINATELY not going to take off at takeoff speed, and probably won't take off at all.

No matter how much the jets are doing, what (generally) provides the lift on an airplane is the motion of the air around the wing. Bernoulli's Principle... Lift is generated by relative motion between the aircrafts wing and the AIR, NOT the conveyor. Therefore, if there is zero relative motion, then there is zero lift due to the motion of the aircraft.

If your argument is that the thrust of the jet engines alone would lift the plane, I am going to have to disagree on that too. Where on your force balance are you going to have an upward force (other than the normal force due to the conveyor)? Not only that, if you are saying that the jet engines are creating the airflow over hte air foil, then they are creating it the wrong way. If we are assuming that this airplane is a 737 or similar airplane, then the faster airflow would be created BELOW the wing, therefore giving you a downward force due to the airflow over the airfoil.

If you had a certain geometry which would allow your jets to create the right airflow over the wings which would give you lift, then you would still have to be moving much faster than takeoff speed to takeoff, because you're still not getting that relative air velocity over the wings.

Keegan, I think you could possibly control the velocity of the conveyor using PD control. It would be possible to use an accuract distance sensor to measure the distance to the front of the plane, as that distance changes, you could control the voltage of the motor based on the "error" in the position.

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So you're implying the chili did not contain beans. Interesting...

Face nailed it!

No doubt now that it takes off.

Even without the fanin sauce.

[This message has been edited by IIIHorn (edited 12/21/2006 12:59p).]

First off, I don't think that the belt would really do anything. This isn't a car, the engines would push the airplane forward no matter what the wheels are doing. What I'm saying is that the belt probably wouldn't even move the plane backwards. The wheels would just spin freely (within limits of about 200 mph for most airplane tires) and the airplane would move forward with no concern with the ground.

But if you just assume that the airplane isn't moving relative to the ground (which is the whole point of the question) then most likely the airplane would never take off. The real question is of course the velocity of the air moving over the wings (which is how most of the lift occurs). You could have enough head wind in theory but you would need around 130 mph winds (for an airliner) which doesn't occur in conditions safe for flying.

There have been airplanes that used the airflow caused by the engines themselves to create lift over the wings (upper surface blowing) but these were just suplements to the lift caused by the motion of the air. Also, airliners aren't designed with this in mind.

Your logic is faulty because you neglected to factor in the thrust caused by the flatulence of the chili consumers.

The wheels just turn faster.

Face...

How 'bout this Coepilot?

Don't I know it.

quote:

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CDUB

Quit stalin

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...and show us your marx?


Billboard...

III,

2 questions:

a) is it Springtime?

b) is the destination Boston?

quote:

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a) is it Springtime?

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The next thing you know someone will ask the question whether or not a black 'copter would be able to land with springs attached to its landing apparatus.

Yall are just turning this thread into a flaming piece of poopy now....

The plane will NOT fly....how many times do I have to explain this!?!?!

It takes off.

IT SHOULD BE NOTED THAT THIS THREAD HAS MORE VIEWS THAN THE DR. GATES REVEALS HIMSELF THREAD.

THAT BEING SAID, THIS IS A MOST EXCELLENT THREAD.

what's the latest on this

will not fly, morons

It's gonna fly!

it will fly, end of story kill the thread before it reaches 200,000

[This message has been edited by CopeIt (edited 12/21/2006 6:27p).]

I am at work or a pr0n blast would be in order. Time to send this thread to the glue factory.