Go Back  PPRuNe Forums > Flight Deck Forums > Tech Log
Reload this Page >

B.A.Longhaual a/c multiple lightning strikes.

Tech Log The very best in practical technical discussion on the web

B.A.Longhaual a/c multiple lightning strikes.

Old 27th Jul 2007, 03:26
  #41 (permalink)  
 
Join Date: Jan 2007
Location: Canada
Posts: 349
Likes: 0
Received 1 Like on 1 Post
There was a fiberglass glider in the UK hit by lightning several years ago and it simply exploded. The moisture in the fiberglass turned to vapour and split the thing apart. Both people parachuted safely.

Though obviously this not the same fiberglass process as the airline manufacturers use.
ahramin is offline  
Old 27th Jul 2007, 13:15
  #42 (permalink)  
 
Join Date: Dec 2001
Location: London
Posts: 186
Likes: 0
Received 0 Likes on 0 Posts
The story of the glider went into an AAIB report, complete with pix, on the investigation of a Super Puma ditching after losing the tail rotor. Very technical investigation on lightning resistance and they found, as FC mentioned, composites have very high resistance to conducting electricity, but when they do, things fall apart. In this case the metal strip on the blades couldn't cope. The only reason they did not all perish, and managed to autorotate, was that the tail rotor assembly was held on by the hydraulic line.

AAIB then recommended far far higher standards for lightning resistance as the load which caused trouble in the north sea was tens of times stronger than the worst case scenarios devised when designing the lightning standards. Nothing has been done though, despite greatly increasing use of composites.
Frangible is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.