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What Are Those "Things" On The Tail?  
User currently offlineBozo From Germany, joined Nov 2005, 170 posts, RR: 0
Posted (8 years 9 months 3 weeks 22 hours ago) and read 4425 times:

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


Virtus Et Honor - S.P.Q.R.
12 replies: All unread, jump to last
 
User currently offlineCRJonBeez From United States of America, joined Nov 2004, 317 posts, RR: 3
Reply 1, posted (8 years 9 months 3 weeks 22 hours ago) and read 4389 times:

#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


User currently offlineFanofjets From United States of America, joined Apr 2000, 1965 posts, RR: 3
Reply 2, posted (8 years 9 months 3 weeks 21 hours ago) and read 4304 times:

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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The aeroplane has unveiled for us the true face of the earth. -Antoine de Saint-Exupery
User currently offlineMr Spaceman From Canada, joined Mar 2001, 2787 posts, RR: 9
Reply 3, posted (8 years 9 months 3 weeks 20 hours ago) and read 4223 times:

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



"Just a minute while I re-invent myself"
User currently offlineRev3oh2 From United States of America, joined Apr 2004, 141 posts, RR: 1
Reply 4, posted (8 years 9 months 3 weeks 18 hours ago) and read 4176 times:
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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?


...let us run with perseverance the race marked out for us.
User currently offlineFr8Mech From United States of America, joined Sep 2005, 5400 posts, RR: 14
Reply 5, posted (8 years 9 months 3 weeks 17 hours ago) and read 4147 times:

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.



When seconds count...the police are minutes away.
User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 6, posted (8 years 9 months 3 weeks 15 hours ago) and read 4101 times:

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
MEL



Think of the brighter side!
User currently offlineAeroWeanie From United States of America, joined Dec 2004, 1608 posts, RR: 52
Reply 7, posted (8 years 9 months 3 weeks 15 hours ago) and read 4083 times:
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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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Photo © David Moore


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

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Photo © Nicholas A Vollaro



User currently offlineVC-10 From United Kingdom, joined Oct 1999, 3701 posts, RR: 34
Reply 8, posted (8 years 9 months 3 weeks 15 hours ago) and read 4075 times:
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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


User currently offlineAeroWeanie From United States of America, joined Dec 2004, 1608 posts, RR: 52
Reply 9, posted (8 years 9 months 3 weeks 14 hours ago) and read 4066 times:
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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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Photo © Mark Bess



[Edited 2005-11-13 06:16:01]

User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 10, posted (8 years 9 months 3 weeks 14 hours ago) and read 4066 times:


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regds
MEL



Think of the brighter side!
User currently offlineFredT From United Kingdom, joined Feb 2002, 2185 posts, RR: 26
Reply 11, posted (8 years 9 months 3 weeks 6 hours ago) and read 3976 times:

Chines and vortex generators do the same job though, and for much, but not exactly, the same purpose. Enjoy the read!


I thought I was doing good trying to avoid those airport hotels... and look at me now.
User currently offlineCCA From Hong Kong, joined Oct 2002, 831 posts, RR: 14
Reply 12, posted (8 years 9 months 3 weeks 5 hours ago) and read 3953 times:

GE

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P&W

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Photo © Sam Chui


RR & an example of how it works

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Photo © Andrew Hunt - AirTeamImages
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Photo © Rhys Dudley - TeamJetspotter




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