Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
"Growths" On The Bottom Of Wings  
User currently offlineBoeing777228 From United States of America, joined Dec 2007, 21 posts, RR: 0
Posted (6 years 1 month 2 weeks 1 day 9 hours ago) and read 3730 times:

What's up with the "growths"(I can't think of a better word) on the bottom of airliner wings??? What do they do??? Arent they just extra parasite drag???

4 replies: All unread, jump to last
 
User currently offlineBlackbird From , joined Dec 1969, posts, RR:
Reply 1, posted (6 years 1 month 2 weeks 1 day 9 hours ago) and read 3730 times:

Do you mean the canoe fairings on the back of the wings (flap underside)?

Blackbird


User currently offlineStarlionblue From Greenland, joined Feb 2004, 17068 posts, RR: 66
Reply 2, posted (6 years 1 month 2 weeks 1 day 8 hours ago) and read 3694 times:

Sounds like the flap track fairings to me as well.

So to answer your question: they are flap track fairings. The flaps have mechanisms for extension, typically in the form of jackscrews. In order to reduce drag and decrease exposure to the elements, the mechanisms (flap tracks) are enclosed in fairings. If a fairing is missing or damaged, most aircraft can dispatch without it but there is a fuel burn penalty.

As Blackbird says, they are often called canoes or canoe fairings.



Another "growth" (I love that) is the drag reducing bump on the underside of 340 wings. IIRC it is close to the outboard engine. I'm sure someone can dig up a pic.



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineBoeing777228 From United States of America, joined Dec 2007, 21 posts, RR: 0
Reply 3, posted (6 years 1 month 2 weeks 1 day 7 hours ago) and read 3675 times:

Yes the canoe fairings! That's what I mean. And now it makes sense that they house the jackscrew for the flaps. Thanks for the replies.

User currently offlineStarlionblue From Greenland, joined Feb 2004, 17068 posts, RR: 66
Reply 4, posted (6 years 1 month 2 weeks 1 day 6 hours ago) and read 3638 times:

Here's a plane with a missing fairing. Outboard on left wing.


View Large View Medium
Click here for bigger photo!

Photo © Pedro Aragão




"There are no stupid questions, but there are a lot of inquisitive idiots."
Top Of Page
Forum Index

Reply To This Topic "Growths" On The Bottom Of Wings
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
738: "things" At The Bottom Of Vertical Stabilizer posted Sun Oct 14 2007 09:02:44 by F.pier
"Ridges" On The Intakes Of Early JT9D's posted Sun Apr 8 2007 00:26:00 by N231YE
What Does "flying By The Seat Of Your Pants" Mean? posted Sat Sep 1 2007 07:36:36 by Lehpron
"descend On The Ils" Question posted Mon Sep 25 2006 21:42:28 by JulianUK
What Exactly Is, "Flying On The Step"? posted Sun Mar 21 2004 20:41:05 by Msllsmith
Strange Control Surface On The Wing Of The 767 posted Sun Mar 30 2008 11:49:59 by Pyrex
Why Do Airbus Tails Have A Bump On The Bottom? posted Sun Apr 29 2007 18:49:29 by Kaitak744
What Exactly Is This On The Front Of The A/C? posted Sat Jan 20 2007 12:06:16 by RootsAir
Why The Little Hole At The Bottom Of The Window? posted Tue Oct 17 2006 03:19:07 by Gh123
Holes On The Cowlings Of The 747? posted Sun Apr 16 2006 02:58:58 by CalAir

Sponsor Message:
Printer friendly format