drax
Member
Registered: 5th Feb 05
Location: Sittingbourne, Kent
User status: Offline
|
MYTHBUSTERS Series 6 Episode 3 they test it!
iF you wanna know where to watch it.... pm me or look !
|
scottyp1989
Member
Registered: 29th Jul 07
Location: Warley, West Midlands
User status: Offline
|
http://www.youtube.com/watch?v=MuXK1nr9_jg
|
nova_gteuk
Member
Registered: 15th May 02
Location: South Wales Drives: The Bandwagon
User status: Offline
|
have you seen adams wife 
The episode where he trys walking up the side of the building with the suction backpack thing she kisses him.
And to be fair shes pretty fit was shocked.
And kari Byron would have it all shapes 
|
scottyp1989
Member
Registered: 29th Jul 07
Location: Warley, West Midlands
User status: Offline
|
quote:
Originally posted by nova_gteuk
And kari Byron would have it all shapes
 agree
|
Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
|
they didnt have to fuck around doing this its obvious it will take off
complete idiots thought it wouldnt
[Edited on 01-02-2008 by Steve]
|
Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
|
Read the comments, still loads of people saying it took off due to other reasons. That may be partially true as its a scale replication and there are other factors in airflow but from a theoretical standpoint as the question is, a bit of basic science is all that is required to not look silly.
[Edited on 01-02-2008 by Ian]
|
Jules S
Premium Member
Registered: 24th Dec 03
User status: Offline
|
quote:
Originally posted by Steve
they didnt have to fuck around doing this its obvious it will take off
Sorry to say it Steve (and i've always known it would take off)
But apparently they prove otherwise 
The myth is all in the wording btw
|
Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
|
quote:
Originally posted by Ian
Read the comments, still loads of people saying it took off due to other reasons. That may be partially true as its a scale replication and there are other factors in airflow but from a theoretical standpoint as the question is, a bit of basic science is all that is required to not look silly.
[Edited on 01-02-2008 by Ian]
http://www.youtube.com/watch?v=IbRcg3ji_Pc
|
Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
|
You can hold it in frictional equilibrium, but that is considerably less than available engine power.
|
Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
|
quote:
Originally posted by Jules S
quote:
Originally posted by Steve
they didnt have to fuck around doing this its obvious it will take off
Sorry to say it Steve (and i've always known it would take off)
But apparently they prove otherwise
The myth is all in the wording btw
the wording doesnt make any difference
|
Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
|
Is that different to this one Steve? Watching now.
http://youtube.com/watch?v=U9STo3fjfGg
|
Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
|
The only problem is, you could still prevent the plane from taking off if the conveyor belt was going fast enough.
Having the conveyor matching the plane's take off speed isn't going to stop it, as the friction in the bearings isn't high enough to slow the plane down to that point.
So it will, and won't, at the same time.
|
Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
|
no just a shortened version showing the key bit
|
Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
|
quote:
Originally posted by Robin
The only problem is, you could still prevent the plane from taking off if the conveyor belt was going fast enough.
Having the conveyor matching the plane's take off speed isn't going to stop it, as the friction in the bearings isn't high enough to slow the plane down to that point.
So it will, and won't, at the same time.
its would have to be going millions of times faster than the planes speed
the original question is If a conveyour belt was travelling in the opposite direction and it matched the planes speed would it take off
the answer is 100% yes
|
Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
|
Well it's not "100% yes" if the plane wouldn't take off with the conveyor going millions of times faster, is it?
The original question was actually "if a plane is on a conveyor belt, will it take off?" no mention of speed, or even direction
|
Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
|
quote:
Originally posted by Steve
the wording doesnt make any difference
Yeah it does - if you say the engine power equals the loss on the wheels it doesn't take off.
5:51 on the vid I just posted.
|
Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
|
sorry i meant the wording on the original question not adding bits or changing bits, the answer to this question
"If a conveyour belt was travelling in the opposite direction and it matched the planes speed would it take off"
is yes
|
Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
|
8:13 - I just took off normally.
No you didn't - your wheels were moving twice as fast as they normally do.
Everything else though, normal.
|
Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
|
That's debatable too though 
Considering the plane was moving forward, it's speed was increasing, but the conveyor was not consistantly matching it's speed, so test = void.
But I know what you're saying.
[Edited on 01-02-2008 by Robin]
|
Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
|
didnt they accelerate the car faster with the speed of the plane?
[Edited on 01-02-2008 by Steve]
|
Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
|
Not sure, the only shot you got of the speedo was at 20mph, but they'd said the plane's take off speed was 25
|
Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
|
quote:
Originally posted by Steve
"If a conveyour belt was travelling in the opposite direction and it matched the planes speed would it take off"
is yes
Yes.
Robin, forget the test, it is flawed. Consider the theory in which the planes ability to generate lift is not hindered by the fact the wheels are spinning backwards. The wheels spin freely *
* not quite, but freely enough to not hinder engine thrust.
|
Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
|
Yeah, if the plane can generate more thrust than the frictional losses in the wheels, it definitely will take off, without a doubt.
|
Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
|
Which it can.
|
Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
|
Unless the speed of the conveyor is such that the friction in the wheels becomes so great that the engines can't overcome it 
edit - which is unlikely to be possible
[Edited on 02-02-2008 by Robin]
|
