DIA
Topic Author
Posts: 3053
Joined: Sun Jan 28, 2001 2:24 pm

What Is Going On With This MD-11's Wing?

Sat Apr 12, 2003 8:07 am

What Is Going On With This MD-11's Wing? (The slats underneath) And why are they different than all others I've seen?
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Photo © Chris Coduto

I've always seen it like this:
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Photo © Yevgeny Pashnin



Thanks ahead of time,
DIA

P.S. If the answers are obvious, then I apologize, I've had a long week and am not thinking very clear at this point.
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777236ER
Posts: 12213
Joined: Sat Aug 18, 2001 7:10 am

RE: What Is Going On With This MD-11's Wing?

Sat Apr 12, 2003 8:23 am

Part of the PIP for Delta's M11s involved redesigned flap fairings.
Your bone's got a little machine
 
DIA
Topic Author
Posts: 3053
Joined: Sun Jan 28, 2001 2:24 pm

RE: What Is Going On With This MD-11's Wing?

Sat Apr 12, 2003 8:23 am

The MD-11, like the DC-10, does not have slats that stick out past the trailing edge of the main wings. The DC-10 never did, and I thought the MD-11 is in the same boat. Compare it to any other pic of the trailing edge of any MD-11. Post the pic if you find one that matches the Delta pic.
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DIA
Topic Author
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RE: What Is Going On With This MD-11's Wing?

Sat Apr 12, 2003 8:25 am

Of course. Just after I post again. . .my answer. Thanks 777236ER. I thought I was going nuts!

Was Delta the only airline to do this?

Cheers,
DIA
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trnswrld
Posts: 1064
Joined: Sat May 22, 1999 2:19 am

RE: What Is Going On With This MD-11's Wing?

Sat Apr 12, 2003 8:27 am

I clearly see what your saying, and until you made this post I had no idea of this design. Thats very interesting, I to am curious what this different design is all about.
 
777236ER
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RE: What Is Going On With This MD-11's Wing?

Sat Apr 12, 2003 8:29 am

I think so. After AA cursed the M11 and bitched about it openly, McDD did lots to boost the range (mainly) of the thing. I think Delta were the only ones to recieve the full all singing and dancing package.
Your bone's got a little machine
 
Guest

RE: What Is Going On With This MD-11's Wing?

Sat Apr 12, 2003 8:37 am

The first one (DL) has the revised flaps fairings which extend quite a bit over the trailing edge unlike the more ´classic ´ layout on earlier prod.- MD-11´s .

As the armchair specialist that I am I can only tell you that I remind MDD and Swissair and other carriers as well together having developed these ´canoe fairings´as part of a whole package of aerodynamics enhancement back in the nineties to eventually overcome the initial shortcomings of the performances the MD-11 suffered from when it was introduced into airline service.
 
bunga777
Posts: 45
Joined: Tue Oct 26, 1999 5:16 pm

RE: What Is Going On With This MD-11's Wing?

Sat Apr 12, 2003 9:02 am

What kind of aerodynamic enhancements do the new fairings provide?
 
Guest

RE: What Is Going On With This MD-11's Wing?

Sat Apr 12, 2003 9:11 am

The new fairings are mainly reducing drag (hence saving fuel ,don´t have the exact figures however ).They have been developed for the PW-powered MD-11´s since the PW ´s were consuming more fuel than predicted .
 
FDXmech
Posts: 3219
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RE: What Is Going On With This MD-11's Wing?

Sat Apr 12, 2003 12:21 pm

We have a few like this, or at least a couple. Here's one.

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Photo © Chris Sheldon

You're only as good as your last departure.
 
A330DAT
Posts: 461
Joined: Thu Nov 15, 2001 2:21 am

RE: What Is Going On With This MD-11's Wing?

Sat Apr 12, 2003 5:00 pm

Later MD-11 aircraft were fitted with these new flap-fairings. It's not from one particular airline but rather an aerodynamic design improvement applied by McDonnell Douglas.


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Photo © AirNikon
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Photo © Paul Jongeneelen

 
je89_w
Crew
Posts: 2070
Joined: Fri Mar 01, 2002 1:29 pm

RE: What Is Going On With This MD-11's Wing?

Sat Apr 12, 2003 7:33 pm

A Japan Airlines MD-11 (JA8589––the Rock Ptarmigan) has extended fairings.

http://www.pbase.com/image/15365612

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Photo © Andrew Hunt



I remember making a post on this topic quite a while ago too.
http://www.airliners.net/discussions/general_aviation/read.main/900728/6/

Jerrold

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