Winglet in flight

[Patrick R7]

septembre 2007 North Atlantic
--
Patrick R7

[Bruce R]

"Patrick R7" > wrote in message
...
> septembre 2007 North Atlantic
> --
> Patrick R7
>

Any idea what the black streaks are coming back to the trailing edge?
Hydraulic fluid? Bird ****? Slow moving baggage handlers??

Bruce

[Ken Murphy[_2_]]

On Sun, 19 Oct 2008 10:03:10 -0400, "Bruce R" >
wrote:

>
>"Patrick R7" > wrote in message
...
>> septembre 2007 North Atlantic
>> --
>> Patrick R7
>>
>
>Any idea what the black streaks are coming back to the trailing edge?
>Hydraulic fluid? Bird ****? Slow moving baggage handlers??
>
>Bruce

Bruce -

The "black streaks" are, in fact, static discharge wicks, to dissipate
static electricity.

See here for excellent description: -
http://www.aerospaceweb.org/question/design/q0234.shtml

Ken


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[Patrick R7]

Bruce R a écrit :
>
> "Patrick R7" > wrote in message
> ...
>> septembre 2007 North Atlantic
>> --
>> Patrick R7
>>
>
> Any idea what the black streaks are coming back to the trailing edge?
> Hydraulic fluid? Bird ****? Slow moving baggage handlers??
>
> Bruce

Hydraulic fluid, I think.

The same wing during landing
--
Patrick R7

[Patrick R7]

Ken Murphy a écrit :
> On Sun, 19 Oct 2008 10:03:10 -0400, "Bruce R" >
> wrote:
>
>> "Patrick R7" > wrote in message
>> ...
>>> septembre 2007 North Atlantic
>>> --
>>> Patrick R7
>>>
>> Any idea what the black streaks are coming back to the trailing edge?
>> Hydraulic fluid? Bird ****? Slow moving baggage handlers??
>>
>> Bruce
>
> Bruce -
>
> The "black streaks" are, in fact, static discharge wicks, to dissipate
> static electricity.
>
> See here for excellent description: -
> http://www.aerospaceweb.org/question/design/q0234.shtml
>
> Ken
>
>
OK :-) Thanks

--
Patrick R7

[Wayne Paul]

A few glider winglets in flight.

Wayne
http://www.soaridaho.com/

[[email protected]]

On Sun, 19 Oct 2008 10:03:10 -0400, "Bruce R" >
wrote:

>
>"Patrick R7" > wrote in message
...
>> septembre 2007 North Atlantic
>> --
>> Patrick R7
>>
>
>Any idea what the black streaks are coming back to the trailing edge?
>Hydraulic fluid? Bird ****? Slow moving baggage handlers??
>
>Bruce

Grease from the flap actuators. They are screws that run out the
flaps when the electric or hydraulic motors are told to move the
flaps. The lubricant is fully exposed to the wind when flaps are
out the grease will blow back against the leading edge of the flap and
spread then run off the flap as showing in this picture.

DF

[Ken Murphy]

On Sun, 19 Oct 2008 16:15:57 +0200, Patrick R7
> wrote:


>> Any idea what the black streaks are coming back to the trailing edge?
>> Hydraulic fluid? Bird ****? Slow moving baggage handlers??
>>
>> Bruce
>
>Hydraulic fluid, I think.
>
>The same wing during landing

Apologies to all for the answer of static wicks. I figured grease is
grease!

But I did like the "..baggage handlers".

Ken

[Jacques[_2_]]

Easy . . . used to be one of those "baggage handlers" at one time . . .
Jacques

"Ken Murphy" > wrote in message
...
> On Sun, 19 Oct 2008 16:15:57 +0200, Patrick R7
> > wrote:
>
>
>>> Any idea what the black streaks are coming back to the trailing edge?
>>> Hydraulic fluid? Bird ****? Slow moving baggage handlers??
>>>
>>> Bruce
>>
>>Hydraulic fluid, I think.
>>
>>The same wing during landing
>
> Apologies to all for the answer of static wicks. I figured grease is
> grease!
>
> But I did like the "..baggage handlers".
>
> Ken


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