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

Pitot heating and airframe de-icing

Wikiposts
Search

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

Pitot heating and airframe de-icing

Thread Tools
 
Search this Thread
 
Old 7th February 2012 | 12:14
  #1 (permalink)  
Thread Starter
Moderator
30 Countries Visited
25 Anniversary
Veteran: Reserves
 
Joined: Feb 2000
Aviation Qualifications: CPL
Posts: 14,480
Likes: 178
From: UK
Pitot heating and airframe de-icing

I just thought that this photograph was worth sharing.

I took it last week, the inlet is a special one on a research aeroplane, and critically is not de-iced in any way. The big bit is the scientific inlet and a couple of inches in diameter, the smaller bit on the left is a pitot and around half an inch in diameter.

This was after an entertaining handful of hours mucking about between surface and FL300 off the Hebrides.

Needless to say, anything flight safety critical on that aeroplane IS de-iced! It is not hard to visualise what would happen to this, or any other, aeroplane if the main flying surfaces weren't.

G

Genghis the Engineer is offline  
Reply
Old 8th February 2012 | 14:10
  #2 (permalink)  
15 Anniversary
 
Joined: Oct 2010
Posts: 422
Likes: 5
From: 5° above the Equator, 75° left of Greenwich
Interesting photograph there. Did you have visual of the thingy from the cockpit while flying? At what altitude/temp did you start to see the ice accumulation?
Escape Path is offline  
Reply
Old 8th February 2012 | 16:29
  #3 (permalink)  
15 Anniversary
 
Joined: Jan 2011
Posts: 780
Likes: 89
From: Seattle
Needless to say, anything flight safety critical on that aeroplane IS de-iced!
Even if this is only scientific equipment, how much time and money was wasted by having the probes ice up in the middle of a test run?
EEngr is offline  
Reply
Old 8th February 2012 | 18:35
  #4 (permalink)  
Thread Starter
Moderator
30 Countries Visited
25 Anniversary
Veteran: Reserves
 
Joined: Feb 2000
Aviation Qualifications: CPL
Posts: 14,480
Likes: 178
From: UK
I don't know when the icing started I'm afraid. The LTI (low turbulence inlet) is directly above the cockpit. The particular thingy isn't used for cloud work, it had just been left fitted.

However, you're right, loss of data due to icing is a big headache. Most instrumentats we can and do de-ice, but a few can be a real headache. The worst is a turbulence probe on the radome - electrical heating would interfere with the radar and chemical de-icing would muck up the chemistry instruments behind it. We do often lose data from that one.

G
Genghis the Engineer is offline  
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.