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aerosol
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Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 1:44 am

Just curious, can a composite plane be scrapped? I mean, you can not make cans out of it, nor can the material be transformed into something else.

Also interesting the "dent" problem raised by emirates.
 
7e72004
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 1:45 am

If they scrapped the 7E7...that would be the end for boeing when the 737 line was stopped.
The next generation of aircraft is just around the corner!
 
BH346
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 1:46 am

They're scrapping the Beech Starships which have a composite fuselage. I think they're cutting the fuselage up and melting it.
Northwest Airlines - Some People Just Know How to Fly
 
7e72004
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 1:47 am

sorry..i think i misread the intent of the post  Big thumbs up Let's see in 100 years what they do with the 7e7...:D
The next generation of aircraft is just around the corner!
 
LVZXV
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 1:54 am

Composite materials are impossible to patch up like aluminium surfraces, and yes, have less vlaue as scrap. AFAIK, composites also have shorter fatigue lives.

XV

How do you say "12 months" in Estonian?
 
gigneil
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 1:59 am

Composite materials are impossible to patch up like aluminium surfraces

Glare can be actually repaired, rather than patched.

AFAIK, composites also have shorter fatigue lives.

The opposite is true.

N
 
greasespot
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 2:02 am

That is not true. You can easily repair composites. Yes it is not as easy as aluminum but it also does not get damaged as easily. Something tat would damage aluminum may not damage composites. IE Stones or other rod.

Composites do not have a lower fatigue life either.

GS

oh and to scrap a composite you have to burn it I believe.
Sometimes all you can do is look them in the eye and ask " how much did your mom drink when she was pregnant with you?"
 
dl757md
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 2:09 am

Composite materials are impossible to patch up like aluminium surfraces

How do you think that composite components on current AC are maintained? They don't just throw away a flap that has damage. There are well established procedures for composite repair. If an airplane is designed with new technology, part of the certification process is to establish repair procedures for that technology.

composites also have shorter fatigue lives.

Would you care to sight your source for that information?

Dl757md
757 Most beautiful airliner in the sky!
 
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scbriml
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 2:22 am

Bmacleod, Don't get depressed! You've misread the question. He was asking if, at the end of it's life, a 7E7 could be scrapped like an aluminium plane.  Smile
Time flies like an arrow. Fruit flies like a banana!
There are 10 types of people in the World - those that understand binary and those that don't.
 
aerosol
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 4:03 am

Scbriml
Yes, that was my question. Fortunately, they go ahead with the plane. My question was more like what they do with the plane after the product life cycle e.g. in the dessert.
 
boeingbus
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RE: TAP Introduce New B/C Lie-Flat Seats On A310-A

Wed Jun 09, 2004 4:08 am

I believe you can just about scrap anything.

is your question whether you can Recycle the materials used in a 7E7? I dont see why not...
Airbus or Boeing - it's all good to me!
 
Vorticity
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 4:16 am

Well, the composite material is made up of two compontents. For aircraft often talk about graphite/epoxy, glass/epoxy, or kevlar/epoxy. That's a good question, I made a glass/epoxy scale sidewinder rocket in school. It sits on a shelf to show people how cool Aerospace Engineering is... but I'm not sure you can do much with it. You may be able to cook away the epoxy and get your glass cloth back, but something tells me not likely.

Since it's two materials built together, it's hard to scrap it down to base levels.

Testing composites and repairing composites is done differently than metals. I've seen some of their techniques for testing and repairing Apache Helicopter blades, interesting stuff.
Thermodynamics and english units don't mix...
 
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solnabo
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 4:53 am

I got it!
Making plastic bags to WalMart? What do you think, guyz?

Mike//SE
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bohica
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 5:07 am

We can make tupperware bowls out of them.  Big thumbs up
 
Vorticity
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 5:12 am

Ummm... really hard to make plastics out graphite/epoxy.
Thermodynamics and english units don't mix...
 
767-332ER
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 9:47 pm


Sonalbo,
I think you need to be turned into a Wal-mart plastic bag...it's a whole lot easier considering your brain is about as good as plastic.
Twinjets...if one fails, work the other one twice as hard!!!
 
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solnabo
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 9:56 pm

767-332ER:
Well......almost true! *lol*
Where´s you´re sence of humor, fudgehead??
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flygmolinafmly
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 11:49 pm

"Also interesting the "dent" problem raised by emirates."

What was this dent problem that I missed?

Gabriel Molina
For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return.
 
aerosol
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RE: Can The 7e7 Be Scrapped?

Wed Jun 09, 2004 11:59 pm

If you have a dent in your car, you can fix it with a hammer. A new method would be to "suck out" the dent.

If a container or service vehicle hits an aircraft with a metal fuselage you have a dent, which you can treat. If it hits a plane with composite structure you have a hole / a crack or nothing. So in the first case you have a bigger problem. With a dent you can fly, with a hole/crack you cannot.

If my very basic thoughts to this are wrong, please feel free to correct me!
 
greasespot
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RE: Can The 7e7 Be Scrapped?

Thu Jun 10, 2004 12:07 am

You are right Aerosol.....Sort of. What would normally put a flyable dent in an aluminum fuselage would not even make a mark in composite. And what would make a hole in composite is it would also make a hole in aluminum.

The idea with composites and why the advantage is it is much more damage tolerant.

For example the HS748 has aluminum prop blades that we are forever fixing as we fly into gravel. The ATR 42 has a composite blade that we have had No FOD damage and we are flying into the same places.

GS.
Sometimes all you can do is look them in the eye and ask " how much did your mom drink when she was pregnant with you?"

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