Will the plane takeoff?
 

Re: Will the plane takeoff?
 

Yes.

Re: Will the plane takeoff?
 

No. The plane is "standing".

Or:

No. The plane isn't moving.

Re: Will the plane takeoff?
 

Depends on the plane.

The tires might blow due to the speed.:giggling: ;)

Re: Will the plane takeoff?
 

be able to

Re: Will the plane takeoff?
 

it would take off. just think physics, F=m*a. The forward force (from the thrust) in both case is always bigger than the backward force (due to the friction of the wheel and ground, and it's very small compare to the thrust force), therefore the net force is always forward. So the plane will accelerate forward in both cases and take off.

:yawn:
Next Please

Re: Will the plane takeoff?
 

Thats the correct answer. At 500mph the tires would blow for sure... Aircrafts average take off speed is 120 MPH I think.......

Re: Will the plane takeoff?
 

Re: Will the plane takeoff?
 

How do you figure the plane can take off when there is no wind moving over the wings to create lift? Can't happen.

Re: Will the plane takeoff?
 

what do you want to bet?:popcorn:

J/K..........Damn, this question gave me a headache like 3 years ago when it originally popped up on the internet........;)

Re: Will the plane takeoff?
 

X2 Unless it's a Harrier.

Re: Will the plane takeoff?
 

Atlanta, Georgia.

Re: Will the plane takeoff?
 

Yes for self-propelled airplanes but No for gliders towed behind ground vehicles.

In self-propelled airplanes thrust is delivered from the props or jets directly to the air, not to the ground. Since no forward thrust is delivered through the wheels, the conveyor will remain stationary. In fact, the conveyor may even move forward slightly with the plane depending on the amount of friction from the axles and the tire's contact patch. As the plane moves forward through the air, relative airspeed increases, lift is generated on the wings and the plane takes off.

With gliders, thrust is provided by a tow vehicle. If the tow vehicle is a truck on the conveyor, it would deliver its thrust through the wheels to the conveyor. Forward movement would be negated by the conveyor's movement, resulting in zero forward motion. The truck could be going 100 mph (relative to the conveyor) but its airspeed and groundspeed (next to the conveyor) would still be 0. No air would pass over the glider's wings and no lift would be generated for takeoff.

Re: Will the plane takeoff?
 

Re: Will the plane takeoff?
 

Nope

keep trying

Re: Will the plane takeoff?
 

Yellow is always a good answer. :cool:

Re: Will the plane takeoff?
 

Four?

Re: Will the plane takeoff?
 

X2

Re: Will the plane takeoff?
 

True that a plane can't take off w/o airflow over the wings to generate lift.

So the underlying question is ... "can a plane generate forward motion (into the wind) on a runway that moves in the opposite direction?"

A car could not, because it generates forward motion by transferring energy to the ground, which would be negated by the conveyor's opposite motion. But a self-propelled plane could still move forward, because it accelerates by pushing the air, irrespective of ground speed or conveyor direction.

Re: Will the plane takeoff?
 

Doesn't the conveyor prevent the plane from moving at all? If so, no movement of air over the wings, no lift.

Re: Will the plane takeoff?
 

You don't get any extra wind flow while on the treadmill.

Re: Will the plane takeoff?
 

Except if Ken is in the vicinity.

Re: Will the plane takeoff?
 

Unless the plane is physically attached to the conveyor, the conveyor has nothing to do with the plane's speed. The props push the air and the plane moves forward through the air, rolling right over the conveyor. Forward motion -> relative air motion over wings -> lift

Re: Will the plane takeoff?
 

That really has nothing to do with it.

Wheels have to turn in either situation. In the case of the plane, it has to move relative to air to lift off, a car doesn't. That is the only difference. How they apply their power has no bearing on this riddle.

Even if a plane is "pushing the air" it has to push against that air (thrust) to make the plane move, gaining speed. As it gains that speed the conveyor is matching the speed in the opposite direction, same as a car would.

Re: Will the plane takeoff?
 

Can't move forward relative to the air around it if the wheels turn at a speed that nets zero relative to that air due to the conveyor.

Re: Will the plane takeoff?
 

Re: Will the plane takeoff?
 

It says that the conveyor will change speed according to the plane's. So it will not move via air or land.

Re: Will the plane takeoff?
 

There are 2 answers to this question.

Re: Will the plane takeoff?
 

Re: Will the plane takeoff?
 

Hey thongboy, got something better than a link to some ignorant liberal columnist?

Re: Will the plane takeoff?
 

Ok, fine, here's a link to another site.

http://www.newton.dep.anl.gov/askasc...5/phy05023.htm

Re: Will the plane takeoff?
 

And another:

http://www.airliners.net/discussions...d.main/136068/

Re: Will the plane takeoff?
 

WhoTF is Fransico?:D:D

Re: Will the plane takeoff?
 

Have you used a brain before? Tried comprehension before?

That's not the same question as the one asked here.

Re: Will the plane takeoff?
 

Doesn't matter. It's not really about the mass of the aircraft that's important.

Re: Will the plane takeoff?
 

WTF are you talking about. Who said anything about Mass.

You really don't get it. You are not comparing apples and apples.

Two completely different questions.

Re: Will the plane takeoff?
 

San?

Re: Will the plane takeoff?
 

This

Hi there is a question going around on a remote control plane forum that goes like this:
"Imagine a plane is sat on the beginning of a massive conveyor
belt/travelator type arrangement, as wide and as long as a runway,
and intends to take off. The conveyer belt is designed to exactly
match the speed of the wheels at any given time, moving in the
opposite direction of rotation.
There is no wind.
Can the plane take off?"

is only different from this

A plane is standing on a runway that can move (like a giant conveyor belt). This conveyor has a control system that tracks the plane's speed and tunes the speed of the conveyor to be exactly the same (but in the opposite direction) instantly.

in the fact that it's about a model aircraft. The wheels have nothing to do with this problem.

It's about physics of thrust, mass, and lift and how they pertain to the aircraft.

Re: Will the plane takeoff?
 

I am beginning to think you really ARE this fvcking stupid and it's not all an act. Geezus...... QUESTIONS goofnuts QUESTIONS The question asked here is not the same question asked in the links you provided. Then you spew out this Mass crap like it has anything to do with the discussion here.

QUESTIONS

I stated "That's not the same question as the one asked here." To which you reply "Doesn't matter. It's not really about the mass of the aircraft that's important."

THE QUESTIONS ARE FVCKING DIFFERENT

Re: Will the plane takeoff?
 

Don't have a heart attack, paragon. The questions are worded slightly differently, but the scenarios are exactly the same. Only the scale is different, which isn't relevant as long as we're talking about models that can actually fly. The physics of flight are the same regardless of size/scale/mass.

Go eat some dinner. I think maybe your blood sugar is off.