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View Poll Results: Will the Mythbuster's Planes Take Off from the "Treadmill"
The RC Plane Will Take Off
66.29%
The Full Scale Plane Will Take Off
49.44%
The RC Plane Won't Take Off
15.73%
The Full Scale Plane Won't Take Off
22.47%
Who cares? This is dumb
21.35%
Multiple Choice Poll. Voters: 89. You may not vote on this poll

Mythbuster's Treadmill Plane Poll

Old 01-24-2008, 10:09 PM
  #1  
Murocflyer
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Default Mythbuster's Treadmill Plane Poll

OK, now is your chance to let us know if you think the Mythbuster's planes will take off from their "treadmills."

Please don't confuse the Mythbuster's episode with the hypothetical question posed in the RCG thread that started the hype on these RC forums. This is real life stuff not make believe.

Have fun!

Frank
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Old 01-24-2008, 10:19 PM
  #2  
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BTW, I hope Grant is the one going to fly the plane. He seems a little more competent with the Tx.

The lead balloon episode last night was pretty good.

Frank
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Old 01-24-2008, 10:28 PM
  #3  
Biplane Murphy
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1 vote for RC plane will take off.
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Old 01-24-2008, 10:30 PM
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I just don't see what the debate is all about...

Oh crap here we go again!
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Old 01-24-2008, 10:31 PM
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Originally Posted by Biplane Murphy View Post
1 vote for RC plane will take off.
What about the full scale?

Frank
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Old 01-24-2008, 10:32 PM
  #6  
pd1
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I should have qualified my vote.
Almost any RC plane will take off.
Who knows with them.

Paul
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Old 01-24-2008, 10:33 PM
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Originally Posted by firemanbill View Post
I just don't see what the debate is all about...

Oh crap here we go again!
I don't know either Bill, but it seems to be quite a popular discussion topic.

Frank
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Old 01-24-2008, 10:43 PM
  #8  
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what is the myth, so what if a plane is on a treadmill, how is the treadmill going to affect the plane??
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Old 01-24-2008, 10:54 PM
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Barring some screwups on the MB gang's part, both planes should accelerate and take off just fine. However, as we've seen on several episodes (boat jump most recently), they don't have the most stellar record when it comes to "do or die" attempts at busting myths, often with their attempt (along with any associated equipment) being the only thing busted at the end of the show.
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Old 01-24-2008, 11:02 PM
  #10  
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My faith meter for the Mythbusters is registering just off zero.

The episode that got me is when he tried to hand prop a Cherokee six.

A fuel injected Lycoming IO-540, 300 horsepower six cylinder engine.

He doesn't know how lucky he is that it didn't start or kick back.

Six cylinder engines are the most dangerous to handprop.

Absolute stupidity.

Paul
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Old 01-24-2008, 11:49 PM
  #11  
IntoRC
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Just guessing here, but I think that both the model and the full scale will takeoff.


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Last edited by IntoRC; 01-25-2008 at 12:18 AM.
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Old 01-24-2008, 11:54 PM
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Originally Posted by meesier42 View Post
what is the myth, so what if a plane is on a treadmill, how is the treadmill going to affect the plane??
It doesn't, but there are a lot of folks who think it does. A LOT of folks.

Frank
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Old 01-25-2008, 12:08 AM
  #13  
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The question can be worded to make it impossible for the plane to move.. but this is only a rigged semantic situation.,, of no more importance than contemplating the sound of one hand clapping.
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Old 01-25-2008, 12:28 AM
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Sparky Paul,

See that is what is so great about the MB's episode. There are no semantics or word play. It is just a RC plane on an exercise treadmill and a full size plane on a big piece of cloth being pulled in an opposite direction of plane travel. No theories or make believe.

Frank
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Old 01-25-2008, 12:28 AM
  #15  
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This is mythbusters. Something will blow up.
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Old 01-25-2008, 12:35 AM
  #16  
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Thats just it. The way the myth was presented lead to too many possibilities being read in. That's where the controversy we've all engaged in started. All I know is that the planes have to move forward fast enough to achieve lift, or they will just keep taxi-ing on.

However, it would be cool to see a full scale take off like a Slow Stick with a 15 mph headwind! Like something picked it straight up right on it's CG! LOL
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Old 01-25-2008, 12:38 AM
  #17  
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Originally Posted by Murocflyer View Post
BTW, I hope Grant is the one going to fly the plane. He seems a little more competent with the Tx.

The lead balloon episode last night was pretty good.

Frank

I liked the surfing with dynamite better though. 200 lbs of T-N-T!!!!


Just like Wile E. Coyote!!!!
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Old 01-25-2008, 12:44 AM
  #18  
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I think I voted without understand what the original myth is. There have been so many different variants
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Old 01-25-2008, 01:14 AM
  #19  
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Originally Posted by Liquidity View Post
I think I voted without understand what the original myth is. There have been so many different variants

Here is what I know:

Adam and Jamie wrestle at the controls of a controversial myth that's confounded fans, confused physicists, and even upset Jamie. The myth is: will an airplane be able to take off if a conveyor belt matches the takeoff speed of the plane moving in the opposite direction? After a crash course in remote-controlled plane flying, the guys experiment with a souped up human treadmill, and even a conveyor belt made of paper. Unsatisfied with the result, they take it to the next level: risking a manned aircraft on a massive 2,000-foot tarpaulin conveyor belt, dragged behind Jamie's pickup.

http://tv.ign.com/objects/142/14228473.html

Frank
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Old 01-25-2008, 01:16 AM
  #20  
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The episode, which airs in December[sic], finds Savage and Hyneman tackling a question baffling everyone from bloggers to pilots: If a plane is traveling at takeoff speed on a conveyor belt, and that conveyor belt is matching the speed in reverse, can the plane take off?
``We put the plane on a quarter-mile conveyor belt and tested it out,'' says Savage about the experiment using a pilot and his Ultralight plane. ``I won't tell you what the outcome was, but the pilot and his entire flight club got it wrong.''

http://www.mercurynews.com/food/ci_7...nclick_check=1
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Old 01-25-2008, 01:19 AM
  #21  
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This is out of control

http://www.mythgaming.net/mwc2007/fo...pic.php?t=1806
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Old 01-25-2008, 07:03 AM
  #22  
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Originally Posted by Murocflyer View Post
Darn you, Muroc. I clicked on that poll (only 57% think the plane will take off? ), and I think I lost around 10 points off my IQ just reading the first two pages. There are some truly stupid people out there debating this relatively simple question with the most ridiculous reasoning (if you can call it that) imaginable.

Let's hope the MythBusters do it right and don't screw up the situation even more by implementing a faulty or inconclusive test.

Last edited by gzsfrk; 01-25-2008 at 03:29 PM.
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Old 01-25-2008, 09:10 AM
  #23  
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Either way, I know I will be watching. I'm sure no matter how it turns out, it will double the amount of posts about this with all the things they done wrong.

Frank
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Old 01-25-2008, 12:34 PM
  #24  
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Theory: the plane will not take-off because its airspeed will always be zero at any wheels speed.
Practice: I don`t think that the conveyor belt can precisely match the plane`s wheels speed, especially a model rc with its out of scale acceleration.
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Old 01-25-2008, 03:38 PM
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Originally Posted by jb48 View Post
Theory: the plane will not take-off because its airspeed will always be zero at any wheels speed.
Practice: I don`t think that the conveyor belt can precisely match the plane`s wheels speed, especially a model rc with its out of scale acceleration.
jb, once the plane starts to move, the wheels will ALWAYS match whatever speed the conveyor belt is moving at because the wheels are spinning freely--they're not attached to a drivetrain or anything else that will cause additional resistance to the plane. Increasing the speed of the conveyor belt will ONLY increase the rotational speed of the wheels, which does NOT increase the resistance against the plane, unless you have a bad bearing, lack of lubrication, or other mechanical problem which leads the resistance of the wheels against the axel to increase as their rotational speed increases.

Remember--the plane's prop(s) is (are) pushing against the AIR to generate forward momentum for the plane, NOT against the surface on which the wheels rest. While the plane will move backward on the conveyor belt if the force generated by the prop is insufficient to overcome the initial wheel friction, once the force from the prop EXCEEDS the wheel friction, the plane will move forward and begin to approach take-off speed, regardless of the rate of the conveyor belt on which it rides.
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