JessKate
Member
Registered: 16th Oct 05
Location: Sheffield
User status: Offline
|
Just recieved a text message from Ant saying - " please post in off day on corsasport... Ant has rung rolls Royce and it will take off but they did not offer any explanation, only that i was the 34th caller asking the same question"
I have no idea what he is talking about but just carrying out his wishes
|
Sam
Moderator
Premium Member
Registered: 24th Dec 99
Location: West Midlands
User status: Offline
|
To do with this Jess:
http://www.corsasport.co.uk/board/viewthread.php?tid=286257
|
Antz
Member
Registered: 28th Jul 03
Location: Leeds Drives: Myself Insane!
User status: Offline
|
This is true, and thank you Jess... I rang them because while out in Leeds it cropped up in conversation... it too 2 minute and 19 seconds for the guy to answer my question, but he did, and t will, 34 people have rang the same factory and asked the same question.... he woiuld not explain the answer as it would have tajen too long, but the plane would have taken off.
|
chris_uk
Premium Member
Registered: 8th Jul 03
User status: Offline
|
so why on your phone did it say that the call lasted 1 9 and you sadi 25 people hag already called? 
|
Antz
Member
Registered: 28th Jul 03
Location: Leeds Drives: Myself Insane!
User status: Offline
|
ok, the minor details were wrong... all I know is the answer was still the same and I still got hammered... so, lets not be petty about this Chris, go to sleep and get ready for work, Morrisons is needing you 
[Edited on 26-05-2006 by Antz]
|
chris_uk
Premium Member
Registered: 8th Jul 03
User status: Offline
|
not working tomorrow.. :/
|
3CorsaMeal
Member
Registered: 11th Apr 02
User status: Offline
|
it was ovious anyway
|
--Dave--
Banned
Registered: 17th Feb 04
Location: Essssseeeeex Drives: Black Supra TT
User status: Offline
|
quote:
Originally posted by Antz
ok, the minor details were wrong... all I know is the answer was still the same and I still got hammered... so, lets not be petty about this Chris, go to sleep and get ready for work, Morrisons is needing you
[Edited on 26-05-2006 by Antz]
 sorry, this made me laugh
|
K2 GTi
Member
Registered: 21st Oct 04
User status: Offline
|
|
Ojc
Member
Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
User status: Offline
|
quote:
Originally posted by 3CorsaMeal
it was ovious anyway
Very, I don't get whats so hard to get your head around.
|
Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
|
quote:
Originally posted by Ojc
quote:
Originally posted by 3CorsaMeal
it was ovious anyway
Very, I don't get whats so hard to get your head around.
|
Antz
Member
Registered: 28th Jul 03
Location: Leeds Drives: Myself Insane!
User status: Offline
|
I know it's obvious, but some lesser beings still don't get it, so had to clear it up once and for all
|
Hammer
Member
Registered: 11th Feb 04
User status: Offline
|
i suspect those that initially believed it wouldn't have taken off had gone so far with their argument that to then change there mind they would have looked very very stupid...so i think everyone got it in the end to be fair.
|
Cosmo
Member
Registered: 29th Mar 01
Location: Im the real one!
User status: Offline
|
I still stick by the fact that someone needs to do the maths to find out if the engines are strong enough to get it to the speed for take off whilst compensating for the friction caused by the weight of the plane and gravity.
I have no doubt it'll move, just dont think it'll go fast enough to take off. 
Oh, and who did you speak to at Rolls Royce, as I doubt you managed to get through to anyone who had any idea about it...probably just some secretary!
|
Antz
Member
Registered: 28th Jul 03
Location: Leeds Drives: Myself Insane!
User status: Offline
|
It probly was, but he seemed clued up on this question as I wasn't the first caller, it was a local factory and they work 24/7 there.
|
Ojc
Member
Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
User status: Offline
|
I have a Rolls Royce Merlin V12 in my Nova.
|
dave17
Member
Registered: 3rd Sep 02
Location: Greater London
User status: Offline
|
I thought it wouldnt take off and then i changed my mind. I didnt feel stupid as the question was openly worded
|
Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
|
quote:
Originally posted by Cosmo
I still stick by the fact that someone needs to do the maths to find out if the engines are strong enough to get it to the speed for take off whilst compensating for the friction caused by the weight of the plane and gravity.
Jesus Christ 
Gravity acts DOWN and is no different in that scenario, therefore if it takes off normally you may assume that with identical gravity and identical pace it will take off in the question.
We all agree it needs pace in order to generate lift.
The pace is a factor of forces acting to speed up or slow down the plane.
Acting to speed up the plane is a jet engine, power output strong enough propel the heavy plane to speeds required for flight.
Acting to slow the plane is the belt, which is exhibiting a frictional loss on the wheels, which is so marginally tiny its not even going to come close to slowing the plane in any circumstance.
So yes, in spite of the belt the plane can fly.
The question twists it slightly though, and thats why the thread was 30 ish pages when I closed it. It suggests a situation in which the plane and belt are travelling at the same speed, which can be interpretted in two ways.
1. The plane is not actually moving when compared to objects on the ground like buildings, due to the engine thrust being sufficient to keep the plane still on the moving belt but not sufficient to move it forward. In this circumstance, the plane would not take off, as there's no air passing the wings and therefore no lift. HOWEVER, this is actually outside the scope of the question as the plane and belt must travel AT THE SAME SPEED, and in this instance, the plane is basically stopped.
2. The plane is moving with regard to the ground and any particular speed, and the belt is moving in the opposite direction at the same speed. The wheels are spinning really rather quick indeed, but the plane will be free to move as according to my first bit, the loss from the wheels isn't enough to overcome the engines, which push against air anyway. This is within the scope of the question but assumes that you consider the result of the forces acting on the plane, not the speed of both the plane and the belt, which could potentially be equal, but which only would be at very low power.
If that doesn't explain it, buy a book or something. You don't need to do any maths as its not really a mathmatical proof you need as the figures are like engine vs wheel bearings. Clearly engine wins.
[Edited on 26-05-2006 by Ian]
|
