Mythbusters plan to uncover plane on conveyor belt

111,158 Views | 2087 Replies | Last: 5 yr ago by toucan82
TexasRebel
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11:07p, 12/27/07
AG
I started mechanical and then went AGEN...but I still took MEEN courses...

cars use the same equation, but the normal force on the cars doesn't vary much at higher velocities and can be assumed negligible...unless it is an F1 or some such that is shaped like an inverted airplane wing...

but the change in resistance from a change in velocity cannot be ignored when trying to get a few more mph or mpg.

Page 42

[This message has been edited by TexasRebel (edited 12/27/2007 11:07p).]
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Ag with kids
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11:23p, 12/27/07
AG
When I go back to work - next week or the week after that, whichever I feel like doing - I'll grab my sim book. My colleague wrote it and it's got pretty much everything you need to model an aircraft. I figure he would know what he's talking about in for this stuff, since he wrote our landing gear model...

Interesting side note on that...he's a PSU alum... I told him he was my mortal enemy for this Saturday...
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TexasRebel
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11:31p, 12/27/07
AG
if it is dealing with aircraft, I wonder if they would just use the the takeoff speed with a safety factor for the coefficent...

also, the coefficent may vary so little between the different velocities that different planes need for take off that the Crr doesn't change much...

but if you read back on one of the earlier pages of this thread (haha, yeah please don't) you'll see that the only way for the belt to keep the plane stationary is to go so fast that the rolling resistance = engine thrust...

it's an impossibly fast number...the slower Crr changes, the higher the velocity of the belt has to be.

as for the relation to Crr and V I'm sure they have a Crr = kV^(1/x) relationship...with x<1.
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Ag with kids
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12:36a, 12/28/07
AG
quote:
also, the coefficent may vary so little between the different velocities that different planes need for take off that the Crr doesn't change much...


I cannot imagine that the Crr increases more than moving around in the noise of the force equations for ANY airplane taking off...

Oh yeah...

The Crr is moot!
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Ag with kids
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12:37a, 12/28/07
AG
And TexasRebel is moot, too!!!

We have GOT to get back on the track of this thread - we were actually discussing real engineering....
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MonkeyKnifeFighter
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12:41a, 12/28/07
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Ag with kids
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1:08a, 12/28/07
AG
At this point????

I've been having tons of fun with it since pg. 1...
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TexasRebel
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1:09a, 12/28/07
AG
lets see if we can get a plane to peel out...
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MonkeyKnifeFighter
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1:10a, 12/28/07
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Ag with kids
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1:16a, 12/28/07
AG
quote:
The skis can't generate a friction force to propel the plane! Oh noes! Physics fails!


Planes on skis do it the same way skiers do. They try to take off from a downhill slope. If this is not possible, then the skis move like cross country skiers to propel them forward...only much faster...They look like Eric Heiden on crystal meth...
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Ag with kids
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1:19a, 12/28/07
AG
quote:
W/Kids: I'm just a little paranoid that your sarcastic chatter is going to inspire a new breed of won't-take-off diehards.


Wittle ol' me?

I'm just letting the world know how airplanes fly...

They need to know the lies about engines and such!!!!
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IIIHorn
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9:22a, 12/28/07
The conveyor is moot!
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IIIHorn
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11:04a, 12/31/07
So when will the show air?
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Brad 03
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11:05a, 12/31/07
AG
I just wanted to post so I am not the only person in history whose name was not on this thread.
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toucan82
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11:07a, 12/31/07
there's a marathon today, so it should be on later
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IIIHorn
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10:37a, 1/4/08
Would someone please provide an update as to when the show will air?
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Oh Four Five
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10:40a, 1/4/08
AG
The show is on a conveyor belt. It will never air.
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IIIHorn
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10:40a, 1/4/08
But will it take off ...
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CDUB98
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10:42a, 1/4/08
AG
dammitt, horn


Can't you wait until the 29th to TTT this?
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IIIHorn
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10:50a, 1/4/08
ttt for CDUB.
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SolidT05
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12:03p, 1/4/08
SF2004
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12:06p, 1/4/08
AG
moot
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toucan82
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10:30p, 1/4/08
CDUB = moot
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Skinny Wrinkles
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10:32p, 1/4/08
Skinny Wrinkles
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10:32p, 1/4/08
Skinny Wrinkles
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10:32p, 1/4/08
Caliber
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10:50p, 1/4/08
AG
I like this thread...so many trolls
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Skinny Wrinkles
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10:52p, 1/4/08
Skinny Wrinkles
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10:59p, 1/4/08
Caliber
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10:59p, 1/4/08
Ag with kids
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1:44a, 1/5/08
AG
Trolling?

I see you show your ignorance as to how airplanes fly...you non-engineering peon...
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jokershady
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2:02a, 1/5/08
AG
discovery channel is moot
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Ag with kids
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2:03a, 1/5/08
AG
Well, obviously...discovery channel isn't on a conveyor belt...
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2
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2:04a, 1/5/08
will take off
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jokershady
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2:11a, 1/5/08
AG
kids are moot
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