1. #1
    raaaid's Avatar Senior Member
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    Feb 2002
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    take a plane with flat wings flying on an ideal fluid, theres no friction so the plane has no propulsion but keeps a constant altitude an speed, now the plane wants to go 100 m higher, it lost speed

    it must be the same for a normal wing if it lifts it goes slower so it has exactly the same behaviour that a flat wing, why to use normal wings if with flat wings you can lift as high by pitching up?

    the only advantage can be that normal wings lift without losing speed, free energy

    but what would be of this world if plumb could turn into gold, petrol was useless and you could irrigate africa turning it into what it once was, no wonder that bull on subpressions that everybody say they understand but actually nobody does
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  2. #2
    W....T....F......
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  3. #3
    If that 'ideal fluid' is beer, I'm willing to experiment with the concept,wings or no wings...
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  4. #4
    'plumbum' is one of the most pleasing words to say, I put it right up with 'pudding' and 'trowel'.

    Go on say em out loud a few times and get really stuck in.

    Loverly.
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  5. #5
    Bernoulli's principle, anyone?
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  6. #6
    Why would the plane in the first instance keep it's altitude without any lift? Gravity is acting on it!!

    Wings are shaped to create lift to counter gravity. This is so obvious that I can't believe it escapes you Raaaid, so you must be trolling.

    For others who don't know:

    The curved upper surface of the wing has a larger surface area the the underside, The air passing over it must therefore move a further distance in the same time. Therefore it must be thinner (less dense) than the air below the wing. The wing is drawn to the area of low pressure over the wing. ie. Suction/lift!

    Why would you make a wing without the benefit of lift????

    And what do you mean that the ONLY advantage is lift i(n your example). Surely that is the whole point of an aeroplane!


    THINK! and stop this stupid trolling. I know you are not that supid, and pretending to be stupid for the sake of feeling superior to those who will bash you (you have said as much in earlier posts) is infantile!
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  7. #7
    Originally posted by raaaid:
    take a plane with flat wings flying on an ideal fluid, theres no friction so the plane has no propulsion but keeps a constant altitude an speed, now the plane wants to go 100 m higher, it lost speed

    it must be the same for a normal wing if it lifts it goes slower so it has exactly the same behaviour that a flat wing, why to use normal wings if with flat wings you can lift as high by pitching up?

    the only advantage can be that normal wings lift without losing speed, free energy

    but what would be of this world if plumb could turn into gold, petrol was useless and you could irrigate africa turning it into what it once was, no wonder that bull on subpressions that everybody say they understand but actually nobody does
    raaaid, why do you refuse to post any of your calculations? Being the superior intellect that you are surely you can easily prove why the accepted theory of aerodynamics is wrong, can't you?

    --Outlaw.
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  8. #8
    Raid is gnarly he knows what he's sayin.

    Keep up the dream, bro.
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  9. #9
    xTHRUDx's Avatar Senior Member
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  10. #10
    The curved upper surface of the wing has a larger surface area the the underside, The air passing over it must therefore move a further distance in the same time. Therefore it must be thinner (less dense) than the air below the wing. The wing is drawn to the area of low pressure over the wing. ie. Suction/lift!

    You should read the Wiki entry:
    "One misconception encountered in a number of explanations of lift is the "equal transit time" fallacy. This fallacy states that the parcels of air which are divided by an airfoil must rejoin again; because of the greater curvature (and hence longer path) of the upper surface of an airfoil, the air going over the top must go faster in order to "catch up" with the air flowing around the bottom."

    http://en.wikipedia.org/wiki/Lift_%2...al_explanation


    Inverted wings make lift too.
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