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Thread: Could air resistance exist in zero gravity?

  1. #1 Could air resistance exist in zero gravity? 
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    Hello,

    I have a hypothetical question. Would it be possible that there were air resistance in an environment with no gravity? Assuming of course that there were air in such an environment. More specifically I'm interested in knowing if vessels such as airplanes with propellers could "fly" in that kind of an environment.

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    Jusael


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  3. #2  
    Forum Isotope Zelos's Avatar
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    of course, air resistence is independed on the pressent of gravity. Its the particles hitting you as you move that creates the resistence


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  4. #3  
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    Okay, thanks for the reply, Zelos. So, does that mean that propeller aircraft could fly/move themselves in such an environment? My guess would be 'yes' but I'm not sure as I'm a little noob in what comes to aerodynamics. My reading of the wikipedia entry on the subject didn't provide an answer.

    Jusael
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  5. #4  
    Forum Isotope Zelos's Avatar
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    yes they would. but the wings wouldnt be needed
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  6. #5 Re: Could air resistance exist in zero gravity? 
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    Quote Originally Posted by Jusael
    Hello,

    I have a hypothetical question. Would it be possible that there were air resistance in an environment with no gravity? Assuming of course that there were air in such an environment. More specifically I'm interested in knowing if vessels such as airplanes with propellers could "fly" in that kind of an environment.

    Thanks,
    Jusael
    Air resistence will be there. As for planes, Yes they would work but you need to make the wings and flaps larger, so it would deflect the air to change orientation. you have to change the wing thickness as well.

    EDIT: I just noticed Zelos said no wings, he is wrong.
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  7. #6  
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    Thanks for your replies, that's just what I wanted to know.

    Jusael
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  8. #7  
    Forum Isotope Zelos's Avatar
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    with some basic knowledge this aint hard to figure out
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  9. #8  
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    Quote Originally Posted by Zelos
    with some basic knowledge this aint hard to figure out
    I think you were just 'plane' wrong again.... :wink:
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  10. #9  
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    I think you were just 'plane' wrong again....
    your talking about yourself
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  11. #10  
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    Quote Originally Posted by Zelos
    yes they would. but the wings wouldnt be needed
    er...

    Pardon me but it was you who said planes wouldn't need wings. When in fact they would, Was it another lie? or do you just not understand anything about flying?
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  12. #11  
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    Without any gravity, in order to fly you will just need orientation wings. Of course you could alway replace the wings, by small jet motors of orientation.

    The wing will not have the classical shape who sustain the plane by a differential of air speed between the lower and upper part of the wing. It would be a symetrical shape ( a straight shape will be more than enough)
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  13. #12  
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    Quote Originally Posted by Powerdoc
    Without any gravity, in order to fly you will just need orientation wings. Of course you could alway replace the wings, but small jet motors of orientation.

    The wing will not have the classical shape who sustain the plane by a differential of air speed between the lower and upper part of the wing. It would be a symetrical shape ( a straight shape will be more than enough)
    The wing would become no more than an 'air deflector' like on a hovercraft.
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  14. #13  
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    Quote Originally Posted by billco
    Quote Originally Posted by Powerdoc
    Without any gravity, in order to fly you will just need orientation wings. Of course you could alway replace the wings, but small jet motors of orientation.

    The wing will not have the classical shape who sustain the plane by a differential of air speed between the lower and upper part of the wing. It would be a symetrical shape ( a straight shape will be more than enough)
    The wing would become no more than an 'air deflector' like on a hovercraft.
    exactly
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  15. #14  
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    Pardon me but it was you who said planes wouldn't need wings. When in fact they would, Was it another lie? or do you just not understand anything about flying?
    this is not a lie. go to the library and look up what LIE means
    since we are in a 0g enviorment wings are not neccisery for the plane to fly
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    On the eighth day Zelos said: 'Let there be darkness,' and the light was never again seen.

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  16. #15  
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    I have decided it would be far more interesting to leave the design of the wings as they are. When moving 'forward' the benoulli effect will allow the plane to travel in the 'up' direction' affording' movement in two axis.
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  17. #16  
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    I'll sit in the 'you dont need wings camp' - all you would need is to vary the angle of the propellor to change direction, like thrust vectoring.

    However it would still be preferable to have wings, because you can use the flaps and some kind of wing would add stability to the aircraft.

    For instance - if the plane went into a spin along the axis of the fuselage, a wing system could prevent this - though technically you wouldn't need a wing or stabilizers if your design spec allowed you to go from point A to point B while spinning.
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  18. #17  
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    The original question was something like, 'would aeroplanes work in a ZG atmosphere' - they would, and probably be just as good. If you take off the wings, you no longer have a plane, so the question of whether this new creation would work is irrelevant.
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  19. #18  
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    The question has been answered,... superficially: Yes, air resistance exist wherever air exists. The bigger question would be: Where would you have air in a zero-gravity environment? What application are you thinking of? There is certainly air resistance inside a space station, or inside an airplane flying a zero-gravity parabola. It's hard to imagine a natural place where that question would be relevant. For example: Without gravity, Earth would not be able to sustain an atmosphere. The density and pressure of the atmosphere are profoundly influenced by gravity. In that sense, gravity can have a profound impact on air resistance.
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  20. #19  
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    Dumb Question. If in Zero gravity would it be considered flying? As flying denotes opposing gravity, without gravity would you be flying??? HMMMM. As far as wings in zero gravity, I would think the air resistance brought on by the aeroynamic drag would negate any benefit from the wing structure as a steering/orientation device. Seems an extension/retraction flap or steering jets, if power consumption were not an issue, would be the better choice than a fixed wing?? Just an observation. Mark L
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