justloveplanes
Topic Author
Posts: 864
Joined: Thu Jul 08, 2004 5:38 am

Lightning Surpression On The 787

Wed Mar 31, 2010 8:27 pm

How much testing has Boeing done with lightning suppression on the 787? Can they accurately imitate a severe lightning strike? How have they acheived a confidence level to address this issue given the good history of Aluminum airliners in this area?
 
KELPkid
Posts: 5247
Joined: Wed Nov 02, 2005 5:33 am

RE: Lightning Surpression On The 787

Wed Mar 31, 2010 8:56 pm

It will be addressed....simulated lightning strikes are part of the certification for a new aircraft   Composite aircraft tend to have wire mesh embedded into the outermost layer of composite to create a Faraday Cage (just like a metal aircraft...)
Celebrating the birth of KELPkidJR on August 5, 2009 :-)
 
tdscanuck
Posts: 8572
Joined: Wed Jan 11, 2006 7:25 am

RE: Lightning Surpression On The 787

Thu Apr 01, 2010 12:21 am

Quoting justloveplanes (Thread starter):
How much testing has Boeing done with lightning suppression on the 787?

Lots. Many years in the case of 787 specifically, more than 20 years for the general case of CFRP primary structure. Don't forget, the pointy bits (radome, nacelles, wingtips, empennage) get a disproportionate share of lightning damage and those have been CFRP (except the radome) for 15+ years.

Quoting justloveplanes (Thread starter):
Can they accurately imitate a severe lightning strike?

Yes.

Quoting justloveplanes (Thread starter):
How have they acheived a confidence level to address this issue given the good history of Aluminum airliners in this area?

Yes.

Quoting KELPkid (Reply 1):
It will be addressed....simulated lightning strikes are part of the certification for a new aircraft

Absolutely true. Actual lightning strikes, though not an intentional part of a test program, often occur during precipitation static testing (which is required) as well.

Tom.

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