X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 26 Jul 2013 21:20:57 -0400 Message-ID: X-Original-Return-Path: Received: from nm12-vm2.access.bullet.mail.bf1.yahoo.com ([216.109.114.241] verified) by logan.com (CommuniGate Pro SMTP 6.0.5) with ESMTPS id 6392786 for lml@lancaironline.net; Fri, 26 Jul 2013 20:39:31 -0400 Received-SPF: neutral receiver=logan.com; client-ip=216.109.114.241; envelope-from=browncc1@verizon.net Received: from [66.196.81.160] by nm12.access.bullet.mail.bf1.yahoo.com with NNFMP; 27 Jul 2013 00:38:55 -0000 Received: from [98.139.221.46] by tm6.access.bullet.mail.bf1.yahoo.com with NNFMP; 27 Jul 2013 00:38:55 -0000 Received: from [127.0.0.1] by smtp103.vzn.mail.bf1.yahoo.com with NNFMP; 27 Jul 2013 00:38:55 -0000 X-Yahoo-Newman-Id: 664243.82829.bm@smtp103.vzn.mail.bf1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: c5cY0SYVM1nv7DCc0DzEg290NRaVbe4bZH9lfkF2y4agZQl Qo7VGio7P9p3vUH6bCwu46nV0g9cAdB0VYbMW8Df6sLkj8U3I7t.aIO6B9Gl eCgN7jYDROmdp1ckiFGbosaJeENL4yjz_4Mgq9i857ua282UmEXY3EGJGoRE _zyTN.DseT0qiCkyGh.fJqTuDQ3YWOYDrzWtKO24oVn5st5VzHRzfmFvkwTg r2DJTBAscj36SRR2Qh0ar9Xk1nidrHjt5906f5OI3CVYxlWfcY_iChXWLttP Gh08A7QQB4fkNL.PwXUoxPHzQq4EOfqtx4mHWgwffoNXik21GEqmQLE3sImS ZFLcXJMdJvJlHhf2H5mkJOTrkbAMQ9OnuuvqoeA2MYIn0L64sEOlXBnKIGqv Zb8JSLHVtF7fIGx8Ax0A06.wK8AOXXsTLhYat0sXDuxjN_.ZDBwxMd5MO1ar evnHC.GTFdakNDrIotG.gIb1zlqRMg6rz13YVKSWGA79eksVzzdyb8dy_vny EtWCs3Cb.Ic0hkHDh_RSJWmITuLRVwwbKwM2Q9zaxil7zugC7r9Nkkwr0PmF ZwNwn5rVES6YBPjhJzp5F5Xm2xSDap5YotDWZu_MBxkC_eo3m X-Yahoo-SMTP: F49l9g6swBC0R9n8vJIbm7Tf3P8Xlmia8rHIwTlO__Ml X-Rocket-Received: from chass-imac-2.home (browncc1@72.64.105.53 with plain) by smtp103.vzn.mail.bf1.yahoo.com with SMTP; 26 Jul 2013 17:38:55 -0700 PDT Subject: Lightning Strike on Composites -- current research at NASA Langley Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: multipart/alternative; boundary=Apple-Mail-1--706140700 From: Charles Brown In-Reply-To: X-Original-Date: Fri, 26 Jul 2013 19:38:53 -0500 X-Original-Cc: Colyn Case , Lancair Mailing List X-Original-Message-Id: References: X-Original-To: "Ely, Jay J. (LARC-D319)" , "Engelund, Walter C. (LARC-A)" , "Szatkowski, George N. (LARC-D319)" , "Dudley, Kenneth L. (LARC-D319)" X-Mailer: Apple Mail (2.1085) --Apple-Mail-1--706140700 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 Thanks guys. I have forwarded to the Lancair Mail List since this is = certainly of general interest to all. There has been an active dialog = on lightning, among other subjects. If you have any questions about = Lancairs or their operations, you can get a bunch of informed answers = here. All Lancairs are composite, with varying amounts of carbon fiber = and fiberglass. Please send pointers to any reports as they become available -- Good = luck with the research!! Charley Brown On Jul 26, 2013, at 12:24 PM, Ely, Jay J. (LARC-D319) wrote: Walt, Colyn, =20 They did a nice job on the article. Ken, George and Larry work in our = lab. The panel shown in the video was indeed carbon fiber composite, = but did not have the typical copper mesh lightning strike protection = present on today=92s airliners. I=92m not sure specifically about the = parameters of the test and composition of the panel, but am cc=92ing = George & Ken in case they have some more information that is ready to = share. =20 Jay Ely =20 From: Colyn Case [mailto:colyncase@earthlink.net]=20 Sent: Friday, July 26, 2013 8:29 AM To: Engelund, Walter C. (LARC-A) Cc: Charles Brown; Ely, Jay J. (LARC-D319) Subject: Re: Backup gyros and lightning strike =20 Walt, =20 thanks for that interesting footage. Do you happen to know if that was a carbon skin? Since carbon has "some" conductivity I'm wondering if it fares a little = better. =20 Colyn =20 On Jul 26, 2013, at 8:21 AM, Engelund, Walter C. (LARC-A) wrote: =20 Thought you guys might enjoy this NASA research nugget. Or maybe not. = Perhaps I should've waited until we had the problem solved before = offering a visual of what happens to composite skin in a lightning = struck event=85 =20 http://www.nasa.gov/larc/lightning-tests/#.UfJobGQ6U3Z =20 -walt --Apple-Mail-1--706140700 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252
Thanks guys.  I have forwarded to the = Lancair Mail List since this is certainly of general interest to all. =  There has been an active dialog on lightning, among other = subjects.  If you have any questions about Lancairs or their = operations, you can get a bunch of informed answers here.  All = Lancairs are composite, with varying amounts of carbon fiber and = fiberglass.

Please send pointers to any reports = as they become available -- Good luck with the = research!!

Charley = Brown


On Jul 26, 2013, at 12:24 PM, = Ely, Jay J. (LARC-D319) wrote:

Walt, = Colyn,
They = did a nice job on the article.  Ken, George and Larry work in our = lab.  The panel shown in the video was indeed carbon fiber = composite, but did not have the typical copper mesh lightning strike = protection present on today=92s airliners.  I=92m not sure = specifically about the parameters of the test and composition of the = panel, but am cc=92ing George & Ken in case they have some more = information that is ready to share.
Jay = Ely
From: Colyn Case = [mailto:colyncase@earthlink.net] 
Sent: Friday, July 26, 2013 8:29 = AM
To: Engelund, Walter C. = (LARC-A)
Cc: Charles Brown; Ely, Jay J. = (LARC-D319)
Subject: Re: Backup gyros and = lightning strike
 
 
thanks for that = interesting footage.
Do you happen to know if = that was a carbon skin?
Since carbon has "some" = conductivity I'm wondering if it fares a little = better.
 
Colyn
 
On Jul 26, 2013, at 8:21 = AM, Engelund, Walter C. (LARC-A) wrote:
 
Thought you = guys might enjoy this NASA research nugget. Or maybe not. Perhaps I = should've waited until we had the problem solved before offering a = visual of what happens to composite skin in a lightning struck = event=85
= --Apple-Mail-1--706140700--