What are the small fences

While flying on a 777 I noticed a series of what appeared to be small fences
close to the leading edge of the wing. Can anyone tell me their purpose?

Thanks,

Indrek Aavisto


--
Criticism is easy; achievement is difficult. W.S. Churchill

"Indrek Aavisto" wrote

While flying on a 777 I noticed a series of what appeared to be small
fences close to the leading edge of the wing. Can anyone tell me their
purpose?

Do a Google for Vortex Generators.

From Wikipedia:
Vortex generators are likely to be found on the external surfaces of
vehicles where flow separation is a potential problem because vortex
generators delay flow separation. [3] On aircraft they are installed on the
leading edge of a wing in order to maintain steady airflow over the control
surfaces at the rear of the wing.[2] They are typically rectangular or
triangular, tall enough to protrude above the boundary layer, and run in
spanwise lines near the thickest part of the wing.[1] They can be seen on
the wings and vertical tails of many airliners. Vortex generators are
positioned in such a way that they have an angle of attack with respect to
the local airflow.

Bob Moore

While flying on a 777 I noticed a series of what appeared to be small
fences close to the leading edge of the wing. Can anyone tell me their
purpose?

RM Do a Google for Vortex Generators.

RM From Wikipedia:
RM Vortex generators are likely to be found on the external surfaces of
RM vehicles where flow separation is a potential problem because vortex
RM generators delay flow separation. [3] On aircraft they are installed
RM on the
RM leading edge of a wing in order to maintain steady airflow over the
RM control
RM surfaces at the rear of the wing.[2] They are typically rectangular
RM or
RM triangular, tall enough to protrude above the boundary layer, and
RM run in
RM spanwise lines near the thickest part of the wing.[1] They can be
RM seen on
RM the wings and vertical tails of many airliners. Vortex generators
RM are
RM positioned in such a way that they have an angle of attack with
RM respect to
RM the local airflow.

RM Bob Moore

Thanks for the info, Bob. We live and learn. ;-)

Indrek Aavisto


--
Criticism is easy; achievement is difficult. W.S. Churchill