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Is it possible for a airplane to take off from a treadmill?

Discussion in 'Off-Topic Discussion' started by WPDAWG11, Apr 7, 2013.

  1. Apr 7, 2013 at 3:52 PM
    #21
    Bandit196

    Bandit196 Well-Known Member

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    Of course it will. The fact that the surface the plane is situated on is moving doesn't matter at all. The plane generates all of it's forward motion from the engines, not from the wheels. The wheels can spin all they want but the force that's pulling that plane forward is completely independent from the opposing force of the treadmill. If you had a plane on a giant ass treadmill, it would still move forward and eventually take off.

    Of course, I have absolutely NO idea what I'm talking about, but it makes sense to me.

    EDIT: Just thought of this. I guess it'd be like having a toy car on a treadmill, if you leave it there its gonna go nowhere or go shootin backwards off of it, but if you apply a force separate from the unpowered wheels, ie your hand (engines), with enough energy expended from you, you can still push it forward on the treadmill.
     
    Last edited: Apr 7, 2013
  2. Apr 7, 2013 at 3:53 PM
    #22
    tostidos

    tostidos Well-Known Member

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    Think of this, if there is a 50MPH wind going in an opposite direction of your car and you apply 50MPH of speed will you car stay still?
     
  3. Apr 7, 2013 at 3:56 PM
    #23
    Bandit196

    Bandit196 Well-Known Member

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    Well your car applies all of its forward momentum through the wheels which have to oppose the speed of the treadmill... a plane doesn't.
     
  4. Apr 7, 2013 at 4:00 PM
    #24
    tostidos

    tostidos Well-Known Member

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    Oh i meant to mention without a conveyor, the air resistance against the car would be the "conveyor" in this experiment and on a regular road.


    I'm aware of what goes on, i'm just making an argument for the opposite case to show how ridiculous this test is.
     
  5. Apr 7, 2013 at 4:01 PM
    #25
    tostidos

    tostidos Well-Known Member

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    was watching the conveyor in the mythbusters episode.
     
  6. Apr 7, 2013 at 4:01 PM
    #26
    Bandit196

    Bandit196 Well-Known Member

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    Ahhh I gotcha :thumbsup:

    I had my head wrapped around treadmills still, didn't even register the word "wind" haha.
     
  7. Apr 7, 2013 at 4:04 PM
    #27
    Kylsix

    Kylsix Makin' it Hail

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    Someone hit the nail on the head earlier - it's because the airplane's power doesn't come from the wheels. If it did, the airplane would not gain any lift. Now, if the myth were that the airplane would take off only under the power of a tarp being pulled under it, the plane would just sit still.

    The disconnect is that people always associate the wheels with the power source of the aircraft.
     
  8. Apr 7, 2013 at 4:05 PM
    #28
    Tacoyota

    Tacoyota senile member

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    That was sad , the so called conveyer belt is just a long tarp.... or done another way he could be towed up to a certain speed with a tow rope. Jees , they knew this in WW2!!
     
  9. Apr 7, 2013 at 4:05 PM
    #29
    teneighty

    teneighty I'd rather be skiing...

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    Lift is generated by a difference in velocity between the plane and air. There has to be some type of motion. If a plane is on a treadmill it will not fly unless there is air being passed by the wings which isn't coming from motion because its not moving... so unless you have a force of air by some other means like a huge fan... shes not gonna take off.

    :der:
     
  10. Apr 7, 2013 at 4:07 PM
    #30
    Tacoyota

    Tacoyota senile member

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    lift is generated by a longer line over the top of the wing (that curve) it creates a lower pressure compared to the bottom of the wing .. in short.
     
  11. Apr 7, 2013 at 4:08 PM
    #31
    tostidos

    tostidos Well-Known Member

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    A huge fan? like, oh i don't know, a Propeller?
     
  12. Apr 7, 2013 at 4:10 PM
    #32
    teneighty

    teneighty I'd rather be skiing...

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    Not all planes have props

    :der:
     
  13. Apr 7, 2013 at 4:11 PM
    #33
    tostidos

    tostidos Well-Known Member

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    :rolleyes:

    A jet / turbine works on the similar principals.
     
  14. Apr 7, 2013 at 4:11 PM
    #34
    Bandit196

    Bandit196 Well-Known Member

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    haha I give up.
     
  15. Apr 7, 2013 at 4:12 PM
    #35
    Bandit196

    Bandit196 Well-Known Member

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    Regardless, how many planes do you know that FLY from their wheels spinning?

    There's a reason they're called landing gear and not take-off or flying gear.
     
  16. Apr 7, 2013 at 4:13 PM
    #36
    teneighty

    teneighty I'd rather be skiing...

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    We have to assume that your keeping your speed the same as the treadmill... So I you have a jet that's putting out enough thrust to keep it on the treadmill it's not going to fly.

    Lets talk prop planes

    what if your prop is positioned in a spot where the air forced by the prop doesn't meet the wings?
     
  17. Apr 7, 2013 at 4:15 PM
    #37
    teneighty

    teneighty I'd rather be skiing...

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    No shit... I never said the wheels propel the the plane

    :jerkoff:
     
  18. Apr 7, 2013 at 4:15 PM
    #38
    Tacoyota

    Tacoyota senile member

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    who needs propellors, get a glider, find a thermal
     
  19. Apr 7, 2013 at 4:17 PM
    #39
    tostidos

    tostidos Well-Known Member

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    Doesn't matter. as soon as the plane has any momentum forward there is little to no resistance on the wheels and it will accelerate right up to take off speed with out an issue... Like i said before, the conveyor could be going 1000mph and the plane would still take off...
     
  20. Apr 7, 2013 at 4:17 PM
    #40
    Bandit196

    Bandit196 Well-Known Member

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    The air doesn't... what? A prop isn't there to shove air under the wings, by that thought process no single engine airplane would fly because the prop isn't infront of the wing surface. The prop doesn't have to initially meet the meet and exceed the speed of the treadmill because it's forward momentum isn't applied by the wheels, it's applied by the prop. Think of it as the plane being pulled forward by the turning of the prop.
     
    Last edited: Apr 7, 2013
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