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Engines And Flaps

LASOctoberB6 From Japan, joined Nov 2006, 2380 posts, RR: 1
Posted (6 years 1 month 3 weeks 3 days 11 hours ago) and read 1771 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]

[NOT IN SERVICE] {WEStJet}

8 replies: All unread, jump to last

HAWK21M From India, joined Jan 2001, 31201 posts, RR: 58
Reply 1, posted (6 years 1 month 3 weeks 3 days 7 hours ago) and read 1742 times:

The MidFlap would.
regds
MEL

Think of the brighter side!

Starlionblue From Hong Kong, joined Feb 2004, 15872 posts, RR: 66
Reply 2, posted (6 years 1 month 3 weeks 3 days 6 hours ago) and read 1724 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." - from Citadel by John Ringo

Molykote From United States of America, joined Aug 2005, 1336 posts, RR: 30
Reply 3, posted (6 years 1 month 3 weeks 3 days 5 hours ago) and read 1701 times:

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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!

Jetlagged From United Kingdom, joined Jan 2005, 2452 posts, RR: 17
Reply 4, posted (6 years 1 month 3 weeks 3 days 2 hours ago) and read 1628 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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Photo © Biel Gomila

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

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Photo © Wolfgang Hut

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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.

LASOctoberB6 From Japan, joined Nov 2006, 2380 posts, RR: 1
Reply 5, posted (6 years 1 month 3 weeks 3 days 1 hour ago) and read 1617 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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Oly720man From United Kingdom, joined May 2004, 6193 posts, RR: 11
Reply 6, posted (6 years 1 month 3 weeks 2 days 21 hours ago) and read 1548 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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Photo © John E. Jauchler

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

Speedracer1407 From United States of America, joined Dec 2004, 333 posts, RR: 0
Reply 7, posted (6 years 1 month 3 weeks 2 days 21 hours ago) and read 1545 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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Dassault Mercure: the plane that has Boeing and Airbus shaking in their boots.

LASOctoberB6 From Japan, joined Nov 2006, 2380 posts, RR: 1
Reply 8, posted (6 years 1 month 3 weeks 2 days 17 hours ago) and read 1496 times:

thanks for clearing that up people....

[NOT IN SERVICE] {WEStJet}

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