Pop quiz: could a plane on a giant treadmill take off?

Discussion in 'Mayberry Lounge' started by ZERO THEORY, Jan 21, 2015.

  1. ZERO THEORY

    ZERO THEORY Purple Belt

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    No cheating.

    A Boeing 747 sits atop a five mile long treadmill. The treadmill reciprocates at a rate equivalent to 75 MPH. Can the plane take flight? Go.
     
  2. Grunk

    Grunk Yellow Belt

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    so 2007 man......
     
  3. Stump

    Stump Black Belt

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    Yup. Lift relates to the air moving over the wings of the plane which is a function of the plane moving through the air.

    This movement is unaffected by the treadmill, and so the plane generates lift in the same way it normally would, despite the tires being on the treadmill.
     
  4. RerouteToRemain

    RerouteToRemain Silver Belt

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    Edit: did not see the 5 mile long part.

    Yes.
     
  5. RerouteToRemain

    RerouteToRemain Silver Belt

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    Edit ^ same as above.
     
  6. PolishHeadlock

    PolishHeadlock Putin Belt Platinum Member

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    Are Jenny and Carly on the plane?
     
  7. Krav McGraw

    Krav McGraw Double Yellow Card Double Yellow Card

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    This has been done to death. Just google it. The answer is yes.
     
  8. dabausplaya

    dabausplaya Brown Belt

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    Depends how many fatties are on the plane
     
  9. JBSchroeds

    JBSchroeds The Lizard Knight

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    Of course it can. The thrust output of the engine acts directly on the aircraft, not the ground like in a car. This means that the wheels spin freely at the airspeed+treadmill speed.

    Do you even Mythbusters, bro?
     
  10. Tycho Brah

    Tycho Brah Zero Shift Belt Platinum Member

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    Paging Schroeds, OldGoat, Doughbelly, realdope, Prok, etc...

    Ah, Schroeds is already here.
     
  11. metal

    metal saying what i want Platinum Member

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    I hope so.
     
  12. Plutoburn

    Plutoburn Alpha booze head

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    Then it should crash. :p
     
  13. frye666

    frye666 Black Belt

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    No? I figure the plane has to reach a certain speed to "lift" And if the plane is actually being slowed down by 75mph, it won't get enough air lift.



    It is actually a dumb question. With a 5 mile long runway, and a plane capable of speeds so great, the 75 mph isn't even a factor.
     
  14. cabear

    cabear Brown Belt

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    yes it takes off. wheels are just their to hold it up on the tarmac. Power comes from turbines, that thrust is independent of wheels
     
  15. blakethemus

    blakethemus Blake Belt

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    Is the plane MH370???
     
  16. paynebringer

    paynebringer Titanium Ape Planet Belt... Always Defend ♠♠♠

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    So the plane is sitting on the treadmill as it reciprocates while the plane gathers take off speed for flight? No! I say the plane needs to gather it's own speed on still and stable surface for flight given distance and speed of treadmill.

    I do think plane takes off but not at end of 5 mile treadmill.
     
  17. ZERO THEORY

    ZERO THEORY Purple Belt

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    Try again.
     
  18. RerouteToRemain

    RerouteToRemain Silver Belt

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    Try what again. I edited to say yes it would. I first answered no because I didn't see how large the treadmill was.
     
  19. dirtypablo

    dirtypablo Brown Belt

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    The speed of the treadmill doesnt matter.
     
  20. Count Zero

    Count Zero Twisting Nether

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    So why don't we have all planes on treadmills, to save space

    How about it, science ?
     

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