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At 11:17 AM 6/10/99 -0400, Norton, Patrick wrote:
>Leading edge flaps and slats are designed to optimize airflow over the
>upper surface of the wing when increases in the angle of attack begin to
>compromise lift, typically during take-off and landing. Some, but not
>all, leading edge slats function like the avian alula by creating a slot
>at the leading edge of the airfoil. Air forced through this narrow slot
>increases in velocity over the top of the wing, thereby avoiding a stall.
> That is essentially how an alula works. On a commercial airliners, you
>can watch the slat (I think these are called the Handley-Page slat)
>separate from the leading edge of the wing by sliding forward, creating
Yep, I certainly can, and have, many times. [I travel by air about once a
year, so I get plenty of opportunities to see them].
It was indeed these slats on commercial airliners that I was thinking of as
being similar to the alula.
[As I am not a pilot, I am most familiar with commercial jet aitliners].
> Not all planes have these slats, as Jim C has already
>mentioned. I don't think you find them on smaller planes.
As I think back, I do not remember seeing them on my uncle's airplanes.
But that was years ago, and I am not sure I would have noticed then.
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