bruno
Posts: 829
Joined: Wed Jan 05, 2000 2:01 pm

MD-80 Wings

Wed Feb 09, 2000 10:33 am

What are those protusions on the under side of MD-80 wings for and why don't any other planes have them?
I support the women’s movement up and down!
 
UAL747
Posts: 6725
Joined: Mon Dec 13, 1999 5:42 am

RE: MD-80 Wings

Wed Feb 09, 2000 10:34 am

Are you talking about forward or aft of the wing?
"Bangkok Tower, United 890 Heavy. Bangkok Tower, United 890 Heavy.....Okay, fine, we'll just turn 190 and Visual Our Way
 
doug
Posts: 699
Joined: Thu Jul 22, 1999 8:54 am

RE: MD-80 Wings

Wed Feb 09, 2000 10:36 am

no idea
 
wingnut
Posts: 20
Joined: Wed Jun 15, 2005 12:18 am

RE: MD-80 Wings

Wed Feb 09, 2000 11:31 am

They are fairings for the flap actuators and hinges
 
dash8
Posts: 389
Joined: Sat Aug 27, 2005 8:23 am

RE: MD-80 Wings

Wed Feb 09, 2000 12:12 pm

I think Bruno is referring to the protrusion under the leading edge mid-length.
thos are called wing fences, and you find the on many "older" wing designs, including the 727. The design is just a little different.
See, wing fences prevent spanwise (root to tip) airflow commonly found on all wings.
Spanwise flow of air causes drag at the tip of the wing. Think of it as a "misplaced" winglet.
I think it also served another function on swept wings, but I can't seem to put my finger on it. Maybe it'll come to me. Meanwhile anyone is free to remind me.

Sincerely,

Xander Koote
 
Buff
Posts: 1066
Joined: Fri Mar 16, 2007 1:29 pm

RE: MD-80 Wings

Wed Feb 09, 2000 2:36 pm

Wing fences, although I couldn't see from the picture provided by Doug, can also serve the same purpose as vortex generators, i.e. boundary layer rejuvenation.

I think what Doug was asking about are the flap track actuator fairings.

It's nice to see some new e-faces on the forum!

Best Regards,

Buff

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