Scnozz
The ripple is either the boundary between laminar and turbulent flow
over the wing or the shock front where the local airflow goes
supersonic.
Jerry Liles
AG Schnozz wrote:
>
> This discussion reminds me of a strange event that I mentioned
> before on the list.
>
> One time I was flying onboard a 727 or MD-80, can't remember
> which, but I'm leaning towards the 727. Anyway, I was above the
> wing right at the CG (Center of Gravity). I was watching a
> ripple in the air. This obvious distortion of light would move
> back and forth an inch or two, and wiggle some, but it stayed
> right there. Once we started to descend it went away, but it
> was the strangest thing.
>
> It was vertical and visible through two different windows. If I
> had to guess it was maybe five or six feet away from the window,
> but who knows exactly since it was a distortion of visable
> light. It looked kinda like an OLD window pane where the glass
> has flowed downward, except it was air. I don't know how tall
> the distortion was, but it distorted the wing from a few feet
> away all the way to the horizon.
>
> AG-Schnozz
>
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