[Science Question] Will a plane take off?

shit

I didn't crack the whole copy & paste task. It's meant to say:

imagine a plane is set on the beginning of a massive conveyor belt, the plane 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?

lol ok

Does the plane have fuel?

The same logic does apply to a hovercraft as it does to a plane, the wheels and air cushion act as the same thing - if they're both taken away will the vessel still move forward? that is what you are asking in your question (although this is different to the initial question).

I am saying that if you have a large enough engine then yes it will...

a plane takes off when the trust generated by the turbines, gives the wings enough lift to counteract the weight of the plane
if a plane was o a conyeyor belt there would be no lift generated by the wings, (providing the speed to the belt matched the trust from the engines.

end of the day its lift that gets a plane in the air and no lift is being generated here. so no. it would not fly

no the gods are driving this baby

Was that a joke question?

I don't get why you keep going on about the wheel speed. It's irrelevant. The thrust only propels the plane forward normally because gravity pushes down on the plane and the ground does not move, whilst the thrust pushes forward, meaning the plane rolls forward on its wheels.

In this case gravity still pushes down on the plane, and the thrust still provides a forward-pushing force, but the earth DOES move, so all the trhust is doing is making the wheels roll on a conveyor belt and not actually moving the plane forward.

it's airflow that lifts a plane though

i was going to say that

We all were!

like fuck. i'm the clever on here

basically its a piss easy question. getting a plane in the air is making sure thrust and lift are greater than drag and weight.

the wing is shaped to give low air pressure over the top and high pressure underneath. when you add thrust it gives the aircraft lift, as the shape of the wing will naturally push it into he air.

the airflow against the wings of a plane on a conveyor belt would not give it enought lift as it would be moving far too slow.

Would it even be moving though? That's the main argument here

i meant the air wouldnt be moving that fast lol.

I'm fascinated by this question like.

lol its simple, it definately, most positively.... would NOT work. theres no lift being generated by the wings. without lift planes are just buses with useless peices of metal hanging out the side

ok lets split this into 2 categories and tell me if you agree/disagree with both - then I can construct my arguements accordingly:

1.

If the plane and belt are moving at the same speed, the force of the engines thrust will propel the plane forward... As unlike a car which is propelled forward by friction a plane moves through air pressure and prop lift, so the only difference between using a belt and a runway would be that energy is consumed through friction and rotational kinetic energy... however this slight resistance wouldn't be enough to stop the plane from propelling itself forward.

2.

I retarct the statements I made prior, I now think that if the wheels are matching the speed of the conveyor belt it will not take off, my initial logic was that the wheels on a plane act like the cushion of a hovercraft - they are there to reduce friction.... However if you use a big enough force to propel the vessel forward then it will over come the friction... This works great till I applied it to our aircraft, an aircraft traveling at 40mph will need wheels traveling 80mph to match a belt moving 40mph, so if the wheels match the planes wheels it would actually move backwards?

I'll eat humble pie

however if the plane is matching the belts speed it will take off.

this debate seems to be going on forever like which came first the chicken or the egg???