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HikesWithEyes
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7E7 Composites

Tue Jul 20, 2004 5:51 pm

Interesting article in the Seattle Times about
composites for the 7E7.

http://seattletimes.nwsource.com/html/businesstechnology/2001983498_bair20.html


[Edited 2004-07-20 10:59:06]
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777ER
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RE: 7E7 Composites

Tue Jul 20, 2004 6:11 pm

• Boeing is considering how to dispose of these plasticized airplanes when their useful life is ended. One possibility is that perhaps 50 years after first flying, the 7E7 might be ground down and used as road fill. This shows that Boeing is wanting to help the environment by not only building a fuel effiencent plane but also when each B7E7 is grounded, instead of the plane going to the desert to gather dust, Boeing is deciding on how the plane can be used for future use.
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leelaw
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RE: 7E7 Composites

Tue Jul 20, 2004 6:36 pm

Excellent Article. Sounds like Airbus may be a little frustrated that their Big Bird could have been a lot lighter with more composites.  Big grin In fact, they will look downright foolish if Boeing is successful with composites advances on the 7e7.
Lex Ancilla Justitiae
 
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RE: 7E7 Composites

Tue Jul 20, 2004 7:18 pm

@Leelaw

You mean as foolish as the AA pilots who thought about asking the A300 fleet being grounded because a plane lost its rudder? Some of you folks then argued that using "plastic" on a plane shouldn't even be considered as the risk is too high.......

Cheers, Thomas
 
leelaw
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RE: 7E7 Composites

Tue Jul 20, 2004 9:04 pm

The A300 probably wouldn't have crashed if it had only lost its rudder, the whole tail section separated. Haven't heard of any composite tails falling off the nearly 500 777s flying.
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miamiair
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RE: 7E7 Composites

Tue Jul 20, 2004 9:10 pm

Hello all,

The thing to remember is that if a repair is accomplished in an improper manner, catastrophic results may follow. Composites are not exempt. Remember the JAL 747 that lost the aft pressure bulkhead? The loss of structural integrity caused the vertical to fail and depart from the fuselage. All for the lack of a row of rivets.

Composites have proved that they are capable of the task of being used in primary structural elements, but they are not wonder materials either; they all have to be properly maintained.
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RE: 7E7 Composites

Tue Jul 20, 2004 9:24 pm

Miamiair

That was my point. Some people here appear to believe that composites are a miracle material that basically can fulfill any purpose. All I heard about composites so far is, that it comes with a lot of opportunities and advantages but also can cause a lot of headache (e.g. delamination is not necessarily easy to detect).

Cheers, Thomas

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