Aviation History and Nostalgia Whether working in aviation, retired, wannabee or just plain fascinated this forum welcomes all with a love of flight.

3350 Exhaust Flames

Old 13th Nov 2022, 00:08
  #1 (permalink)  
Thread Starter
Join Date: Nov 2004
Location: Here, there, and everywhere
Posts: 1,083
Likes: 0
Received 10 Likes on 5 Posts
3350 Exhaust Flames

I know……the mods don’t really like Instagram links.

But maybe they will forgive me after watching this one…..
punkalouver is offline  
Old 13th Nov 2022, 07:45
  #2 (permalink)  
Join Date: May 2021
Location: Wiltshire
Posts: 211
Received 0 Likes on 0 Posts
It's an old post from YouTube (IIRC posted here at that time?), so maybe that link would be OK? Lovely bit of film either way.
Pypard is offline  
Old 13th Nov 2022, 10:18
  #3 (permalink)  
Join Date: Apr 2015
Location: Netherlands
Posts: 240
Likes: 0
Received 0 Likes on 0 Posts
As a 10 year old boy I remember the flight to our parents in S-America in the KLM Super Constellation, and during the night I used to stare at the exhaust of the engines, the pipe glowing light red, and inside the pipe a light blue flame was visible. Both the colours and the engine drone was very reassuring during the 8 hour flight over the second half of the atlantic (Sal Island to Paramaribo).
washoutt is offline  
Old 14th Nov 2022, 06:52
  #4 (permalink)  
Join Date: Jun 2002
Location: Tauranga (NZTG)
Posts: 6,535
Received 30 Likes on 25 Posts
Here's a different but equally spectacular Connie video:

India Four Two is offline  
Old 14th Nov 2022, 09:25
  #5 (permalink)  
Join Date: Apr 2015
Location: Netherlands
Posts: 240
Likes: 0
Received 0 Likes on 0 Posts
I would expect, that with turbo compound engines, the exhaust flames would have been doused after passage through the turbines with the subsequent temperature drop. Apparantly not. Is there still considerable energie left in these hot gasses, that they still are visible as flames ? As I said earlier, during cruise the exhaust was nothing more than a faint blue light inside the exhaust pipe.
washoutt is offline  
Old 14th Nov 2022, 10:16
  #6 (permalink)  
Join Date: Jun 2014
Location: Netherlands
Age: 53
Posts: 3,059
Received 2 Likes on 2 Posts
Were these full flow turbocharged engines or did they have a bypass?
Self loading bear is offline  
Old 14th Nov 2022, 10:52
  #7 (permalink)  
Join Date: Jun 2001
Location: OZ
Posts: 1,104
Received 6 Likes on 3 Posts
You miss the point. The engines were operated spectacularly rich for fuel cooling of the cylinders. This rich mixture was still burning when it exited the cylinder and passed into the exhaust pipes. If the cylinders weren't so much over rich they would likely have simply melted stuff.
The Wright DA TC engines were pushed way, way over sensible limits to make the power.
mustafagander is offline  
Old 14th Nov 2022, 21:25
  #8 (permalink)  
Join Date: Nov 2005
Location: Wildest Surrey
Age: 75
Posts: 10,681
Received 66 Likes on 49 Posts
Yellow or possibly red flames would indicate a 'rich' mixture for takeoff/climb whereas blue or even white flames would indicate a 'lean' mixture for cruise.
In the days of carburreted cars, I used to own a 'Colortune' spark plug which allowed you to look into the combustion chamber and view the colour of the flame and adjust your mixture accordingly.
chevvron 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 - Do Not Sell or Share My Personal Information

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.