So do Boeing 787's need wing sand, wax, buff, reprofile, refinish?

[Stewart Kissel]

I am intrigued by the construction of the Dreamliner...carbon
fiber makes it's way to commercial aircraft. This
got me wondering about the construction techniques
of glider wings vs how Boeing does it. Will the 787
have spar bumps after a few years? Are the wings pulled
out of molds? Do they buy gelcoat from the same German
manufacturer as SH or Schleicher? Or are they painted
in poly? Any Boeing types out there with some insights?

[[email protected]]

On Jul 11, 2:55 pm, Stewart Kissel
> wrote:
> I am intrigued by the construction of the Dreamliner...carbon
> fiber makes it's way to commercial aircraft. This
> got me wondering about the construction techniques
> of glider wings vs how Boeing does it. Will the 787
> have spar bumps after a few years? Are the wings pulled
> out of molds? Do they buy gelcoat from the same German
> manufacturer as SH or Schleicher? Or are they painted
> in poly? Any Boeing types out there with some insights?

most importantly, do they tape the wing roots? and if so do they use
the expensive 3M stuff or just electrical tape?

[anonymous]

schrieb:
> On Jul 11, 2:55 pm, Stewart Kissel
> > wrote:
>> I am intrigued by the construction of the Dreamliner...carbon
>> fiber makes it's way to commercial aircraft. This
>> got me wondering about the construction techniques
>> of glider wings vs how Boeing does it. Will the 787
>> have spar bumps after a few years? Are the wings pulled
>> out of molds? Do they buy gelcoat from the same German
>> manufacturer as SH or Schleicher? Or are they painted
>> in poly? Any Boeing types out there with some insights?
>
> most importantly, do they tape the wing roots? and if so do they use
> the expensive 3M stuff or just electrical tape?

On the same line: Does anybody know whether there's a one man rigging
aid available?

[nimbusgb]

Wander down the airport terminal and mumble 'I'm looking for crew'.
Watch crowds scatter :)

[Kloudy via AviationKB.com]

Dang..and imagine alla them Hotelier fittings ya gotta pin.

--
Message posted via http://www.aviationkb.com

[JS]

On Jul 11, 3:53 pm, "Kloudy via AviationKB.com" <u33403@uwe> wrote:
> Dang..and imagine alla them Hotelier fittings ya gotta pin.
>
> --
> Message posted viahttp://www.aviationkb.com

Trailering is difficult.

[rustynuts]

Kloudy via AviationKB.com wrote:
> Dang..and imagine alla them Hotelier fittings ya gotta pin.
>
> --
> Message posted via http://www.aviationkb.com
I'll bet ya there all automatic hook ups.

[nimbusgb]

On 12 Jul, 15:31, rustynuts > wrote:
> Kloudy via AviationKB.com wrote:
> > Dang..and imagine alla them Hotelier fittings ya gotta pin.
>
> > --
> > Message posted viahttp://www.aviationkb.com
>
> I'll bet ya there all automatic hook ups.

I've heard that polishing the bugs of the leading edge after they've
been blasted on at 200 kts is a real pain

[[email protected]]

I wonder if 747 pilots mumble about "glassholes" when the 787 pilots
walk by.

[Jack[_1_]]

wrote:

> I wonder if 747 pilots mumble about "glassholes" when the 787 pilots
> walk by.


Depends on how the last merger skewed the seniority list, again.


Jack

[Bullwinkle]

On 7/12/07 7:12 PM, in article
, "Jack" >
wrote:

> wrote:
>
>> I wonder if 747 pilots mumble about "glassholes" when the 787 pilots
>> walk by.
>
>
> Depends on how the last merger skewed the seniority list, again.
>
>
> Jack
Jack,

You left the "r" out of "skewed," and it's spelled with a "c" not a "k."

Bullwinkle

[Jack[_1_]]

Bullwinkle wrote:
> On 7/12/07 7:12 PM, in article
> , "Jack" >
> wrote:
>
>> wrote:
>>
>>> I wonder if 747 pilots mumble about "glassholes" when the 787 pilots
>>> walk by.
>>
>> Depends on how the last merger skewed the seniority list, again.
>>
>>
>> Jack
> Jack,
>
> You left the "r" out of "skewed," and it's spelled with a "c" not a "k."
>
> Bullwinkle


Pretty much.

But hey, as long as _everybody_ feels they got s(k)-cr-ewed, then it
all went as well as could be expected.

The "glassholes" will be the ones who get to fly until they are 65,
but they will bitch about having to do the extra five years.

'Twas ever thus.



Jack

[P. Corbett]

nimbusgb wrote:
> Wander down the airport terminal and mumble 'I'm looking for crew'.
> Watch crowds scatter :)
>
Surpassed only by the LAK-12 and the Caproni Calif.

Paul
ZZ

[[email protected]]

Actually, the 787 is built from basically the same material as the
SparrowHawk, so it is not likely to have much problem with that kind
of thing. A little bit different resin in the prepreg and it is laid
out by machine, but the fibers are exactly the same. Not likely to be
many bumps as there are many co-cured parts and the material is very
stable. 6 year old SparrowHawk number 1 is still very smooth.

Painted - gelcoat would turn brown in the oven!

Pretty much all of the other gliders are built with rather old
technology when it comes to resins and tooling. No one who wants
really accurate, repeatable parts does assembly in the molds or uses
wet lay-up. There are good reasons other gliders are built the way
they are. Tooling is very expensive. There has to be the right
number built to pay off the tooling. With the number of
Discus' (Discii?) or LS4's built, it would have probably been cheaper
in prepreg - assuming of course, that you were starting production
sometime since 1995. Typically, it is hard to make that bet in the
world of glider manufacturing.


On Jul 11, 9:55 pm, Stewart Kissel
> wrote:
> I am intrigued by the construction of the Dreamliner...carbon
> fiber makes it's way to commercial aircraft. This
> got me wondering about the construction techniques
> of glider wings vs how Boeing does it. Will the 787
> have spar bumps after a few years? Are the wings pulled
> out of molds? Do they buy gelcoat from the same German
> manufacturer as SH or Schleicher? Or are they painted
> in poly? Any Boeing types out there with some insights?

[Kloudy via AviationKB.com]

wrote:
>Actually, the 787 is built from basically the same material as the
>SparrowHawk, so it is not likely to have much problem with that kind
>of thing. A little bit different resin in the prepreg and it is laid
>out by machine, but the fibers are exactly the same.
>
All made of fabric. That has always been fascinating to me about our gliders
is that they are just thin shells flyin' around.
While I was sitting on the ground once waiting for our tow-plane, I got into
a discussion with another of our tow-pilots about glass fibre, resins, etc.
and he reminded me of something I hadn't thought of before.
"You know", he said "Basically you're just sitting in a big, crusty rag..."

(9_6)

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http://www.aviationkb.com/Uwe/Forums.aspx/soaring/200707/1

[Jack[_4_]]

PIKs were built in an autoclave, though I'm not sure they were done in
prepreg. My 31-year-old sailplane still doesn't have a spar bump...
unfortunately, the molds were't terribly stable...

Jack

[ContestID67]

Can you imagine being in a gaggle of these? ;-)

- John

[Kloudy via AviationKB.com]

ContestID67 wrote:
>Can you imagine being in a gaggle of these? ;-)
>
>- John
I have...frequently.

It's called "Class B"

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http://www.aviationkb.com/Uwe/Forums.aspx/soaring/200707/1

[Bert Willing]

Guess you never rigged a Calif...

"P. Corbett " > wrote in message
...
> nimbusgb wrote:
>> Wander down the airport terminal and mumble 'I'm looking for crew'.
>> Watch crowds scatter :)
>>
> Surpassed only by the LAK-12 and the Caproni Calif.
>
> Paul
> ZZ

[P. Corbett]

Bert Willing wrote:
> Guess you never rigged a Calif...
>
> "P. Corbett " > wrote in message
> ...
>> nimbusgb wrote:
>>> Wander down the airport terminal and mumble 'I'm looking for crew'.
>>> Watch crowds scatter :)
>>>
>> Surpassed only by the LAK-12 and the Caproni Calif.
>>
>> Paul
>> ZZ
>
>
Bert

Not quite right, Bert. I have assisted in that process many times. It
was almost always a 4-man task.

Paul

[Bert Willing]

Paul,

I owned one for many years. It's a 2-man task if trained well, but more
comfortable with 3 people. I prefer to rig a Calif rather than a Duo or a
Janus.

Bert

"P. Corbett " > wrote in message
...
> Bert Willing wrote:
>> Guess you never rigged a Calif...
>>
>> "P. Corbett " > wrote in message
>> ...
>>> nimbusgb wrote:
>>>> Wander down the airport terminal and mumble 'I'm looking for crew'.
>>>> Watch crowds scatter :)
>>>>
>>> Surpassed only by the LAK-12 and the Caproni Calif.
>>>
>>> Paul
>>> ZZ
>>
>>
> Bert
>
> Not quite right, Bert. I have assisted in that process many times. It was
> almost always a 4-man task.
>
> Paul