Airplane on a Conveyor conundrum

[Antshiel]

not at all.

how can science be taking the p1ss. you state in one post that you need to use a force just to keep the plane stationary. this is to counteract the force of the paper.

then in another post you say that it doesnt matter about any backwards force, the plane will still take off.

if anyone is taking the mick its you isnt it?

Ladies, please!!

[MattF]

if anyone is taking the mick its you isnt it?

Completely mate.

[yoshie]

490 post ago this was settled

http://www.hiluxsurf.co.uk/forums/sh...079#post405079

post 135 I thankyou now move on

[Snorkel]

yeah you're right Tony! hehe, I think I must be tired (can I use that excuse please? lol). It might help some people to think of a magnetised mono-rail.

Indeed if the conveyor moved back even at 1million miles an hour, the plane would stay still (kind of - the friction is there but minimal) but the wheels would just freewheel! (and burn up probably lol)

[MattF]

I should have shut up about that.....What I meant was I thought it was about the engines moving air over the wings through thrust (or suction to create thrust), whereas the point is actually that the plane moves forward almost entirely irrespective of the conveyor.

Yup. First the forward thrust from the prop/turbine, which bears no relation to the wings as such, but provides the forward drive/momentum, and then the airflow over the wings, which creates the high/low pressure which allows for take-off.

[Snorkel]

As new people join in, (they aren't going to read 500+ posts) so it'll just go round and round, and on and on. over and over - got me?

all

[MattF]

yeah you're right Tony! hehe, I think I must be tired (can I use that excuse please? lol). It might help some people to think of a magnetised mono-rail.

No you may not use that as a plausible excuse.

[TonyN]

No you may not use that as a plausible excuse.

I dunno, works for me.............

[Antshiel]

As new people join in, (they aren't going to read 500+ posts) so it'll just go round and round, and on and on. over and over - got me?

Not true, what if that person was sat on a plane on a conveyor belt going nowhere for a very long time?

[MattF]

I dunno, works for me.............

That excuse is just soooo last year though.

[TonyN]

Not true, what if that person was sat on a conveyor belt going nowhere for a very long time?

Thats a feeling I can relate to......

[Sancho]

if this was the case then all you would need is 0.1 higher than the total friction of the planes wheels, and then the plane would continue to accelerate infinately.
of course this doesnt happen cos, and we know why.

You're so close. This is the case. The plane will continue to accelerate up to the limit of its engines capabilities. Drag and friction from the air will stop it from accelerating indefinitely, as usual.

[yoshie]

Have we not reached the thread length record yet???
Can we not stop now???

[Sancho]

Have we not reached the thread length record yet???
Can we not stop now???

never

[MattF]

Have we not reached the thread length record yet???
Can we not stop now???

Why do you keep posting to the thread then? I hate this thread. Honestly. It's like a scab. Annoying, but you just can't resist picking it.