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

Is this a magnesium fire

Wikiposts
Search

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

Is this a magnesium fire

Thread Tools
 
Search this Thread
 
Old 15th July 2020 | 04:15
  #1 (permalink)  
Thread Starter
 
Joined: Nov 2019
Posts: 3
Likes: 0
From: unknown
Is this a magnesium fire


The whole video is interesting but at 7:00 it looks like the engine has a sparking fire.
tcasblue is offline  
Reply
Old 15th July 2020 | 06:27
  #2 (permalink)  
 
Joined: Jan 2013
Posts: 263
Likes: 0
From: Seattle Area
Yes - magnesium fire. The engine case on the Wright 3350 was a magnesium alloy that burned in a number of incidents. The typical scenario was loss of propeller pitch control leading to inability to stop rotation or even overspeed.
Dave Therhino is offline  
Reply
Old 15th July 2020 | 11:19
  #3 (permalink)  
 
Joined: Mar 2002
Posts: 4,569
Likes: 1
From: Florida
Yes a typical metal fire buring much hotter than aviation high octane fuel.. It only ceases when it burns down to thick sections which can radiate temperature to maintain below ignition temp. When as a teenager I tried to impress a fellow worker by taking a magnesium machine shaving out of a barrel and light it with a match. The foreman was not impressed.

In rotating machienery, the most common cause is friction from rubbing against the parts of a magnesium gearbox. I fear that was the initiator here hence the prop release. Seems like in my visual memory bank there is some similar footage from WWII carrier landings of damaged planes.
lomapaseo is offline  
Reply
Old 15th July 2020 | 21:09
  #4 (permalink)  
15 Anniversary
 
Joined: Dec 2006
Posts: 2,486
Likes: 8
From: The No Transgression Zone
I love playing around with magnesium...on the bottle it says "do not use water, do not use foam-smother with graphite"
Pugilistic Animus is offline  
Reply
Old 15th July 2020 | 22:35
  #5 (permalink)  
Fleet Manager
25 Anniversary
 
Joined: Apr 2001
Aviation Qualifications: ATPL
Posts: 7,448
Likes: 310
From: various places .....
The engine case on the Wright 3350 was a magnesium alloy that burned in a number of incidents.

.. as did a few blowers atop the venerable old RR Dart
john_tullamarine is online now  
Reply

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



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

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.