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MythBusters airplane on a conveyor belt



 
 
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  #1  
Old January 30th 08, 09:36 PM posted to rec.aviation.piloting
Peter Clark
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Posts: 538
Default MythBusters airplane on a conveyor belt

For those interested in such things, the MythBusters show titled
"Airplane on a Conveyor Belt" is in TVGuide to air tonight at 9pm
Eastern US on Discovery/Discovery HD.
  #2  
Old January 30th 08, 11:34 PM posted to rec.aviation.piloting
Robert M. Gary
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Posts: 2,767
Default MythBusters airplane on a conveyor belt

On Jan 30, 1:36*pm, Peter Clark
wrote:
For those interested in such things, the MythBusters show titled
"Airplane on a Conveyor Belt" is in TVGuide to air tonight at 9pm
Eastern US on Discovery/Discovery HD.


Yea, I had the TiVo searching for it for the last few weeks. I see
that its set to record soon (I never actually pay attention to when a
show is on anymore). I'm looking forward to it. To me the interesting
part will not be the experiment but the premise. Do some believe that
an airplane generates lift as a result of the speed of the wheels?
-Robert
  #3  
Old January 31st 08, 12:36 AM posted to rec.aviation.piloting
Jim Logajan
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Posts: 1,958
Default MythBusters airplane on a conveyor belt

"Robert M. Gary" wrote:
On Jan 30, 1:36*pm, Peter Clark
wrote:
For those interested in such things, the MythBusters show titled
"Airplane on a Conveyor Belt" is in TVGuide to air tonight at 9pm
Eastern US on Discovery/Discovery HD.


Yea, I had the TiVo searching for it for the last few weeks. I see
that its set to record soon (I never actually pay attention to when a
show is on anymore). I'm looking forward to it. To me the interesting
part will not be the experiment but the premise. Do some believe that
an airplane generates lift as a result of the speed of the wheels?


The lift from circular reasoning is enormous!
  #4  
Old January 31st 08, 03:02 AM posted to rec.aviation.piloting
WingFlaps
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Posts: 621
Default MythBusters airplane on a conveyor belt

On Jan 31, 12:34*pm, "Robert M. Gary" wrote:
On Jan 30, 1:36*pm, Peter Clark

wrote:
For those interested in such things, the MythBusters show titled
"Airplane on a Conveyor Belt" is in TVGuide to air tonight at 9pm
Eastern US on Discovery/Discovery HD.


Yea, I had the TiVo searching for it for the last few weeks. I see
that its set to record soon (I never actually pay attention to when a
show is on anymore). I'm looking forward to it. To me the interesting
part will not be the experiment but the premise. Do some believe that
an airplane generates lift as a result of the speed of the wheels?
-Robert


I'd be interested in knowing whether they can detect the actual lift
derived from the wheels spinning as the plane lifts off...

:-O

Cheers
  #6  
Old January 31st 08, 01:25 PM posted to rec.aviation.piloting
Dudley Henriques[_2_]
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Posts: 2,546
Default MythBusters airplane on a conveyor belt

Bertie the Bunyip wrote:
WingFlaps wrote in news:ddef2011-7cca-4e5e-b5a8-
:

On Jan 31, 12:34 pm, "Robert M. Gary" wrote:
On Jan 30, 1:36 pm, Peter Clark

wrote:
For those interested in such things, the MythBusters show titled
"Airplane on a Conveyor Belt" is in TVGuide to air tonight at 9pm
Eastern US on Discovery/Discovery HD.
Yea, I had the TiVo searching for it for the last few weeks. I see
that its set to record soon (I never actually pay attention to when a
show is on anymore). I'm looking forward to it. To me the interesting
part will not be the experiment but the premise. Do some believe that
an airplane generates lift as a result of the speed of the wheels?
-Robert

I'd be interested in knowing whether they can detect the actual lift
derived from the wheels spinning as the plane lifts off...


Well, you could do it in a wind tunnel!
There was a time in the 30's when a rotating cylinder was seen as the
future of the wing. I think maybe even a few were built! I'm pretty sure I
have an old Popular aviation with a few pics of a fairly unsucessful
prototype..
But a little spinning wheel isn't going to give you much..

Bertie

Actually you can still do it. I used a spinning cylinder all the time in
my discussions on aerodynamics. It makes a perfect example when getting
into lift. A cylinder not rotating in a free stream airflow has no lift
as the stagnation points are neutral. The airstream flows over the
cylinder equally; no Bernoulli...no Newton.
Now spin the cylinder clockwise to the airstream. Walla......instant
lift! You get it all in one simple demonstration. You get upwash and
downwash. That's circulation. (Newton) You get increased local velocity
over the top of the cylinder and decreased local velocity under it.
That's Bernoulli!
The whole shegang is Magnus effect. It's a wonderful way to get into
wings, golf balls, curve balls...the whole magilla :-))


--
Dudley Henriques
  #7  
Old January 31st 08, 01:30 PM posted to rec.aviation.piloting
Bertie the Bunyip[_24_]
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Posts: 2,969
Default MythBusters airplane on a conveyor belt

Dudley Henriques wrote in
:

Bertie the Bunyip wrote:
WingFlaps wrote in
news:ddef2011-7cca-4e5e-b5a8-
:

On Jan 31, 12:34 pm, "Robert M. Gary" wrote:
On Jan 30, 1:36 pm, Peter Clark

wrote:
For those interested in such things, the MythBusters show titled
"Airplane on a Conveyor Belt" is in TVGuide to air tonight at 9pm
Eastern US on Discovery/Discovery HD.
Yea, I had the TiVo searching for it for the last few weeks. I see
that its set to record soon (I never actually pay attention to when
a show is on anymore). I'm looking forward to it. To me the
interesting part will not be the experiment but the premise. Do
some believe that an airplane generates lift as a result of the
speed of the wheels? -Robert
I'd be interested in knowing whether they can detect the actual lift
derived from the wheels spinning as the plane lifts off...


Well, you could do it in a wind tunnel!
There was a time in the 30's when a rotating cylinder was seen as the
future of the wing. I think maybe even a few were built! I'm pretty
sure I have an old Popular aviation with a few pics of a fairly
unsucessful prototype..
But a little spinning wheel isn't going to give you much..

Bertie

Actually you can still do it.



Really? I thought there might have been a physics watershed back there
in the late ffties!


I used a spinning cylinder all the time
in my discussions on aerodynamics. It makes a perfect example when
getting into lift. A cylinder not rotating in a free stream airflow
has no lift as the stagnation points are neutral. The airstream flows
over the cylinder equally; no Bernoulli...no Newton.
Now spin the cylinder clockwise to the airstream. Walla......instant
lift! You get it all in one simple demonstration. You get upwash and
downwash. That's circulation. (Newton) You get increased local
velocity over the top of the cylinder and decreased local velocity
under it. That's Bernoulli!
The whole shegang is Magnus effect. It's a wonderful way to get into
wings, golf balls, curve balls...the whole magilla :-))



Excellent. What kind of contraption do you use to demonstrate?

Bertie


  #8  
Old January 31st 08, 01:53 PM posted to rec.aviation.piloting
Andy Hawkins
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Posts: 200
Default MythBusters airplane on a conveyor belt

Hi,

In article ,
Dudley wrote:
Now spin the cylinder clockwise to the airstream. Walla......instant
lift!


Would that be punka walla, or cha walla?

(ITYM 'Voila' )

Andy (sorry, couldn't resist!)

  #9  
Old January 31st 08, 07:36 PM posted to rec.aviation.piloting
Jim Logajan
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Posts: 1,958
Default MythBusters airplane on a conveyor belt

Dudley Henriques wrote:
The whole shegang is Magnus effect. It's a wonderful way to get into
wings, golf balls, curve balls...the whole magilla :-))


There have been planes and ships built that actually used the Magnus effect:

Some early aircraft:
http://www.airbornegrafix.com/Histor...otorplanes.htm

An early ship:
http://www.efluids.com/efluids/galle...rship_page.htm

Jacques Cousteau's famous "Alcyone":
http://colaco.freeshell.org/download...one_canada.jpg
  #10  
Old January 31st 08, 03:47 PM posted to rec.aviation.piloting
gatt[_2_]
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Posts: 248
Default MythBusters airplane on a conveyor belt


"Robert M. Gary" wrote in message
news:0c2b0515-acb4-4050-844e-

Do some believe that an airplane generates lift as a result of the speed of
the wheels?


Maybe if they fast-forward the videotape they'll generate even more lift.


-c


 




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