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aerodynamic question

Last post 07-20-2007, 1:31 PM by z400racer37. 3 replies.
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  •  06-29-2007, 3:09 PM 4477

    aerodynamic question

    hey guys,

    just woondering, i was looking at some footage of fighter jets dogfighting and i noticed when they executed an evasive acent or a banked turn, there would be white lines that came off the wings. in not talking about contrails i mean on the very tips of the wings. is this a visible "draft" or temperary void of gasses made because theyre moving so fast? please tell if you happen to know. thanks

  •  06-30-2007, 4:28 AM 4478 in reply to 4477

    Re: aerodynamic question

    Hi,

    Look here for a good description of what is causing the Vapor/wing vortices: http://en.wikipedia.org/wiki/Wingtip_vortices

    The reason you see it a lot when a fighter is pulling G's is because the pressure differential between the top and bottom of the wing is a lot higher compared to just flying straight and level at 1 G. At 9 G's the wing is producing 9 times the lift. Also the Angle of Attack AOA on the wing is higher during these maneuvers and causes eairlier seperation of air flow over the wings surface and also increases induced drag: http://en.wikipedia.org/wiki/Induced_drag

     

    RUN

  •  07-18-2007, 3:15 AM 4546 in reply to 4478

    Re: aerodynamic question

    Thanks for the link Run.

    _____________

  •  07-20-2007, 1:31 PM 4550 in reply to 4546

    Re: aerodynamic question

    yeah ditto that
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