sleekjet
Topic Author
Posts: 2006
Joined: Sat Jul 28, 2001 1:35 am

Need Wing Part Identified...

Sun Jun 19, 2011 2:04 am

I'm just a civilian nerd. Someone tell me what you call that red/orange thingy under the wing that moves when the flaps are lowered.

http://img.photobucket.com/albums/v649/tim552/N422WN061711one.jpg
II Cor. 4:17-18
 
movingtin
Posts: 87
Joined: Sat Oct 21, 2006 1:03 am

RE: Need Wing Part Identified...

Sun Jun 19, 2011 2:09 am

it is called a Flap track fairing.
 
474218
Posts: 4510
Joined: Mon Oct 10, 2005 12:27 pm

RE: Need Wing Part Identified...

Sun Jun 19, 2011 2:25 am

Quoting movingtin (Reply 1):
it is called a Flap track fairing.


It covers the mechanism that moves the flaps up and down.
 
26point2
Posts: 814
Joined: Wed Mar 03, 2010 6:01 am

RE: Need Wing Part Identified...

Sun Jun 19, 2011 2:37 am

Some refer to this fairing as a "canoe" although it looks more like a kayak.
 
User avatar
Starlionblue
Posts: 17096
Joined: Fri Feb 27, 2004 9:54 pm

RE: Need Wing Part Identified...

Sun Jun 19, 2011 3:29 am

Just to expand, the fairing is a cover that makes an aerodynamic shape, lowering drag. Most aircraft can despatch with one or more missing but there is a drag penalty since the "naked" mechanism is not very aerodynamic.

The fairings have two other functions:
- They protect the flap mechanism from damage.
- They make the aircraft conform more closely to the area rule, and thus lower drag further.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
wingscrubber
Posts: 806
Joined: Fri Sep 07, 2001 1:38 am

RE: Need Wing Part Identified...

Mon Jun 20, 2011 3:50 am

Covers the flap jackscrew. Normally splattered with grease inside when it gets flung off the spinning jackscrew.
Resident TechOps Troll
 
User avatar
HAWK21M
Posts: 29867
Joined: Fri Jan 05, 2001 10:05 pm

RE: Need Wing Part Identified...

Tue Jul 05, 2011 11:52 am

Flap track fairng/canoe is normally the aft portion covering the TE Flap track mechanism.
Provides Aerodynamic covering to the mechanism it houses,reduces drag.
Normally has a drain hole at the tip to permit moisture drainage.Tapers down with increased Flap deployment.

The Classic B737s had the outboard fairings with a retractable Landing light that did have some snags to the mechanism.
I may not win often, but I damn well never lose!!! ;)
 
yeelep
Posts: 724
Joined: Mon Apr 04, 2011 7:53 pm

RE: Need Wing Part Identified...

Tue Jul 05, 2011 2:47 pm

Just to add to the above. On the NG, Boeing likes to call them flap support fairings, though everybody calls them flap fairings, canoes or flap track fairings. They are made up of three parts, the fwd, aft and tailcone fairing. In the above picture you see all of the tailcone and about a foot of the aft fairing.

Quoting Starlionblue (Reply 4):
Most aircraft can despatch with one or more missing but there is a drag penalty since the "naked" mechanism is not very aerodynamic.

The NG's have eight flap tracks numbered 1 through 8 aircraft left to right. 1 and 8 can dispatch with all three fairing sections or just the tailcone missing. 2,3,6 and 7 can dispatch with only the tailcone missing. 4 and 5 are in the wheel well/body fairing area and don't have fairings.


Quoting HAWK21M (Reply 6):
The Classic B737s had the outboard fairings with a retractable Landing light that did have some snags to the mechanism.

The Classics outboard flap fairings are also an integral part of the aft flap drive system, which may have looked good when it was designed, but in practice, not so much. IMO from a mechanics perspective, the flap design of the NG was the single greatest improvement made over the classic.

Who is online

Users browsing this forum: Woodreau and 18 guests