Airplane physics question | Page 78 | FerrariChat

Airplane physics question

Discussion in 'Other Off Topic Forum' started by alanhenson, Dec 3, 2005.

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?

Does the plane fly?

  1. Yes

  2. No

  3. Question doesn't allow answer.

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  1. Ricard

    Ricard Formula Junior

    Jan 23, 2004
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    The mythbusters episode isn't about this specific question so no point...
     
  2. Ricard

    Ricard Formula Junior

    Jan 23, 2004
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    The wheels movement would be driven by the belt, it doesn't matter which way the plane is traveling or on what surface, the wheels only move when a surface touches them so they will be driven by the belt - which according to the question, moves in the opposite direction to the plane.
     
  3. treventotto

    treventotto Formula Junior

    Apr 14, 2008
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    I believe that in the end I misinterpreted "the opposite direction of rotation".
    Therefore I have new view, more or less what others have said and also my first thought.

    Forward motion of the plane is countered by rearward motion of the belt.

    In theory: The belt will increase speed into infinity, keeping the plane in place.
    In practice: The belt will soon reach it's maximum speed, limited by it's motor, the plane will move forward (with the wheels turning at normal plus belt speed) and take off.

    Tomorrow I will have a different opinion.
     
  4. rob lay

    rob lay Administrator
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    Dec 1, 2000
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    this is funny, I understand those that are yet to understand, you will get there, but funny part is how certain people are and then once they figure it out... Oh ****!
     
  5. wax

    wax Five Time F1 World Champ
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    Jul 20, 2003
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    Hence - won't fly.
     
  6. rob lay

    rob lay Administrator
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    my Google Ads thank you. ;)
     
  7. wax

    wax Five Time F1 World Champ
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    Yeah, well... still won't fly. No airflow = no "air"plane.
     
  8. 2NA

    2NA F1 World Champ
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    Dec 29, 2006
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    Tim Keseluk
    STOP DOING THIS!!!
     
  9. rob lay

    rob lay Administrator
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    would a plane that crashed into Wax's house bounce? :D
     
  10. GuyIncognito

    GuyIncognito Nine Time F1 World Champ
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    I think it would melt... :)
     
  11. wax

    wax Five Time F1 World Champ
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    As long as the airplane is in a airless environment, I have nothing to worry about.
     
  12. caseykimma

    caseykimma Formula 3

    Jun 5, 2004
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    one of the best explanations so far. Simple and to the point. Really, the only question is whether or not lift is created. Without forward movement and/or wind, no lift is created, so no flight.
     
  13. Darolls

    Darolls F1 Veteran
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    Where have you been dude? I said the same thing months ago!
     
  14. caseykimma

    caseykimma Formula 3

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    just catching up on my Ferrari Chat and throwing in my 2 cents.
     
  15. GrigioGuy

    GrigioGuy Splenda Daddy
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    Nov 26, 2001
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    Thrust == motion == airflow == flight


    And the airplane wouldn't bounce, but the check might :D
     
  16. Spasso

    Spasso F1 World Champ

    Feb 16, 2003
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    Somebody PLEASE kill this thread!
     
  17. Jedi

    Jedi Moderator
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    BIG help YOU are! :D
     
  18. Blue@Heart

    Blue@Heart F1 Rookie

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    #1943 Blue@Heart, Oct 16, 2009
    Last edited by a moderator: Sep 7, 2017
  19. treventotto

    treventotto Formula Junior

    Apr 14, 2008
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    And now for something almost completely different:

    We all know an F1 car could drive upside down from a certain speed (eg against the ceiling of a tunnel.
    Putting the wings upside down could make it take off.

    Q: Could you make an F1 take off and land on it's wheels and how far would it fly. (Wings within regulation size)

    Have a nice weekend!
     
  20. Spasso

    Spasso F1 World Champ

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    It depends on the speed of the car at lift-off and the weight bias front to rear.

    I think that without movable control surfaces the car would be susceptible to blow over or nose dive, much like the experiments with paper airplanes.

    It can be done but the flight characteristics change depending on how hard it is thrown (driven) and how it is balanced.

    It's an open equation because of infinite variables hence no need to discuss it further without more data or parameters.
     
  21. Darolls

    Darolls F1 Veteran
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    Exactly!
     
  22. treventotto

    treventotto Formula Junior

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    The idea was with no movable control surfaces.
    I think it will lift off as soon as the speed is reached where enough lift is created (logically), but with the wheels not touching the ground it will not accelerate anymore but slow down quickly because of drag. And fall back to earth after a few meters.
     
  23. Spasso

    Spasso F1 World Champ

    Feb 16, 2003
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    Sounds good on paper but even with down force cars tend to blow over,

    Like this Mercedes at LeMans, http://www.youtube.com/watch?v=Ow3rxq7U1mA&feature=related ,

    http://www.youtube.com/watch?v=SFN_Gp1eHN0&feature=related

    and this one, http://www.youtube.com/watch?v=BgYyP8YKsas&feature=related.

    With loss of thrust and no movable control surfaces their is no way to control pitch. Drag takes over and the car blows over.
     
  24. mattymouse33

    mattymouse33 F1 Rookie

    Oct 25, 2004
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    What colour is the plane?
     
  25. Darolls

    Darolls F1 Veteran
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    Here's the skinny. The OP says that the conveyor belt is moving at the same speed as the airplanes wheels, but obviously in the opposite direction. Therefore, there is no forward progression of the airplane to create thrust and lift. So, the plane is actually remaining stationary and no lift off can occur.

    It's really simple dynamics.
     

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