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Engines And Flaps  
User currently offlineLASOctoberB6 From Japan, joined Nov 2006, 2380 posts, RR: 1
Posted (7 years 3 months 4 weeks 1 day 1 hour ago) and read 2296 times:

has anyone ever noticed that when the flaps are deployed, they are never connected with the two inboard edges? why

http://www.airliners.net/open.file/1193973/L/ <-- sorta visible there

http://www.airliners.net/open.file/0809359/L/

http://www.airliners.net/open.file/1182402/L/

[Edited 2007-04-02 09:45:22]


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8 replies: All unread, jump to last
 
User currently offlineHAWK21M From India, joined Jan 2001, 31667 posts, RR: 56
Reply 1, posted (7 years 3 months 4 weeks 21 hours ago) and read 2267 times:

The MidFlap would.
regds
MEL



Think of the brighter side!
User currently offlineStarlionblue From Greenland, joined Feb 2004, 16999 posts, RR: 67
Reply 2, posted (7 years 3 months 4 weeks 20 hours ago) and read 2249 times:

First of all:

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Photo © Alex Pan
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Photo © Stefan Sjögren - Stockholm Arlanda Photography



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Photo © EDDL Photography



Secondly, I am not sure I understand the question. You mean why are the inboard flaps not connected to the fuselage? If that is your question, HAWK21M is correct that some of them are. But I don't know the particulars of flap design well enough to tell you why or why not.



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineMolykote From United States of America, joined Aug 2005, 1340 posts, RR: 29
Reply 3, posted (7 years 3 months 4 weeks 19 hours ago) and read 2226 times:

I'm not sure about the exact nature of your question either....

However, if you are asking why the flaps have a "gap" in continuity at the spanwise engine location consider the effect of the violent exhaust stream on the flap structure and potential alterations to aircraft handling.



Speedtape - The asprin of aviation!
User currently offlineJetlagged From United Kingdom, joined Jan 2005, 2543 posts, RR: 24
Reply 4, posted (7 years 3 months 4 weeks 15 hours ago) and read 2153 times:

From the thread title I assume the question is about the split between the inboard and outboard flaps. In all three examples shown, the inboard and outboard flaps have inboard ailerons between them (OK on the 777 they are called flaperons  irked  ). The split at the engine is convenient but not essential. Other aircraft have continuous flaps across the engine exhaust, often for beneficial reasons.

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The MD80 has inboard and outboard flaps which are connected by a fairing.

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Photo © William Jenkins




The glass isn't half empty, or half full, it's twice as big as it needs to be.
User currently offlineLASOctoberB6 From Japan, joined Nov 2006, 2380 posts, RR: 1
Reply 5, posted (7 years 3 months 4 weeks 15 hours ago) and read 2142 times:

Quoting Jetlagged (Reply 4):
The MD80 has inboard and outboard flaps which are connected by a fairing.

i tryin to get to that sort of thing, like on this 757, between the 1st and 2nd flap canoe, the flap doesnt reach out as far ...
http://flightlevel350.com/Aircraft_B..._Airlines_Aviation_Video-8283.html



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User currently offlineOly720man From United Kingdom, joined May 2004, 6688 posts, RR: 11
Reply 6, posted (7 years 3 months 4 weeks 11 hours ago) and read 2073 times:

Quoting LASOctoberB6 (Reply 5):
between the 1st and 2nd flap canoe, the flap doesnt reach out as far

Gap for the jet exhaust. The inboard section is 2 element and the smaller element probably couldn't be extended outboard because of the structural loading due to the jet.


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The A380 on the other hand has no exhaust gap in the flap, but it just has a single element flap.


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Photo © Niel Swart




wheat and dairy can screw up your brain
User currently offlineSpeedracer1407 From United States of America, joined Dec 2004, 333 posts, RR: 0
Reply 7, posted (7 years 3 months 4 weeks 11 hours ago) and read 2070 times:

Quoting LASOctoberB6 (Thread starter):
has anyone ever noticed that when the flaps are deployed, they are never connected with the two inboard edges?

Hardly "never," and in addition to exceptions posted above:


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Photo © Stuart Haigh - topjetpix


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Photo © Sven De Bevere



And another nice shot of the A380:

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Photo © Bernard Charles (Art-Avia)




Dassault Mercure: the plane that has Boeing and Airbus shaking in their boots.
User currently offlineLASOctoberB6 From Japan, joined Nov 2006, 2380 posts, RR: 1
Reply 8, posted (7 years 3 months 4 weeks 7 hours ago) and read 2021 times:

thanks for clearing that up people....


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