Bozo
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What Are Those "Things" On The Tail?

Sun Nov 13, 2005 6:34 am

hi,
first of all sorry if its the wrong forum but as i'm new, i'm not very familiar with all those sections  Wink

my question is, what are those red marked things for?

http://img482.imageshack.us/img482/7641/9576977et.jpg
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CRJonBeez
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What Are Those "Things" On The Tail?

Sun Nov 13, 2005 6:39 am

#1 appears to be vortex generators, used to assist in aerodynamics and better lift if i'm not mistaken

#2 are static wicks, used to discharge static in the air due to friction while in flight
 
fanofjets
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What Are Those "Things" On The Tail?

Sun Nov 13, 2005 7:05 am

Number one is correct - the thingies on that 737 are indeed vortex generators, designed to improve the air flow around the tail area.


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Mr Spaceman
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RE: What Are Those "Things" On The Tail?

Sun Nov 13, 2005 8:54 am

Hi guys.

>> Bozo, here's a link with a lot of good info about Static Discharge Wicks when they were being discussed in this forum in the past. These posts should answer most or all of your questions about those wicks ...... I hope. Big grin

http://www.airliners.net/discussions/tech_ops/read.main/127631/a

Here's some good info from previous discussions about Vortex Generators too.

Check out the link provided by AAR90 in reply #5.

http://www.airliners.net/discussions/tech_ops/read.main/69195/a


Chris  Smile
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rev3oh2
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RE: What Are Those "Things" On The Tail?

Sun Nov 13, 2005 10:11 am

While we're on the subject of aircraft protrusions, are the little shark-fins seen on some commercial jet engines there for a similar purpose, vortex generation? Or something else?
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fr8mech
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RE: What Are Those "Things" On The Tail?

Sun Nov 13, 2005 11:05 am

Quoting Rev3oh2 (Reply 4):
While we're on the subject of aircraft protrusions, are the little shark-fins seen on some commercial jet engines there for a similar purpose, vortex generation? Or something else?

These are called 'chines' and are found, I believe, exclusively on GE engines. They help smooth the airflow over the leading edge after being disturbed by the engine.
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HAWK21M
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RE: What Are Those "Things" On The Tail?

Sun Nov 13, 2005 1:07 pm

Quoting CRJonBeez (Reply 1):

CRJonBeez is correct.

Quoting Fr8Mech (Reply 5):
These are called 'chines' and are found, I believe, exclusively on GE engines. They help smooth the airflow over the leading edge after being disturbed by the engine.

Why only on GE Engines.What did they notice that others did not.
What about V2500s
regds
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aeroweanie
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RE: What Are Those "Things" On The Tail?

Sun Nov 13, 2005 1:48 pm

Quoting Fr8Mech (Reply 5):
These are called 'chines' and are found, I believe, exclusively on GE engines.

Not so - this is a NWA A320 (with V2500s) and it has nacelle chines on the inboard side of the nacelles:

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The real story is that Douglas had the patent on using two nacelle chines:

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That is why Boeing used single, inboard chines (and this aircraft has P&W engines):

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VC-10
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RE: What Are Those "Things" On The Tail?

Sun Nov 13, 2005 1:54 pm

Quoting AeroWeanie (Reply 7):
Not so - this is a NWA A320 (with V2500s) and it has nacelle chines on the inboard side of the nacelles:

NWA a/c have CFM 56's
 
aeroweanie
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RE: What Are Those "Things" On The Tail?

Sun Nov 13, 2005 2:11 pm

Quoting VC-10 (Reply 8):
NWA a/c have CFM 56's

Ooops, I thought "if its NWA, it must have engines that P&W are involved with", hence V2500s. Oh well, look at the 767 I show. I did check on this one. Its an ex-Qantas airplane and their -200s had P&Ws. And... this is a V2500 powered A320 (I checked this time):

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[Edited 2005-11-13 06:16:01]
 
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HAWK21M
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RE: What Are Those "Things" On The Tail?

Sun Nov 13, 2005 2:13 pm


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regds
MEL
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FredT
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RE: What Are Those "Things" On The Tail?

Sun Nov 13, 2005 10:28 pm

Chines and vortex generators do the same job though, and for much, but not exactly, the same purpose. Enjoy the read!
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CCA
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RE: What Are Those "Things" On The Tail?

Sun Nov 13, 2005 11:10 pm

GE

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P&W

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