Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
DC10 & L-1011: Wing And Flap Question  
User currently offlineDC10Tony From United States of America, joined May 2001, 1012 posts, RR: 0
Posted (14 years 7 months 2 days 16 hours ago) and read 5281 times:

On the DC-10, why are the wings almost perfectly straight, while on the L-1011 they're curving upward?

On the DC-10, why are the rear horizontal stabilizers curved upward, but on the L-1011, they're perfectly straight?

Are there any advantages or disadvantages for each design, or one plane compared to the other?

5 replies: All unread, jump to last
User currently offlineTEDSKI From , joined Dec 1969, posts, RR:
Reply 1, posted (14 years 7 months 2 days 7 hours ago) and read 5222 times:

The L-1011 has a slat locking system that the DC-10 lacks.

User currently offlineDC10Tony From United States of America, joined May 2001, 1012 posts, RR: 0
Reply 2, posted (14 years 7 months 2 days 5 hours ago) and read 5206 times:

Ok, but what's a slat locking system and how is it relevant to my question?

User currently offlineDC-10Tech From United States of America, joined Jun 2001, 298 posts, RR: 1
Reply 3, posted (14 years 7 months 2 days 5 hours ago) and read 5203 times:

The upward curving you're speaking of is call 'Dihedral'. While the DC-10 wing appears to be straight, it is actually called a dual dihedral because the wing roots actually curve up quite a bit until they meet the less-curved part of the wing near the pylons. Dihedral increases stability about the roll axis. The difference between the dihedral on the stabs of each aircraft may be due to the different configurations between the #2 engine arrangement. Just remember that the engineers designed these aircraft after a lot of wind tunnel testing, and the design of each aircraft has been found to be the best combination of aerodynamics, handling, and efficiency in the wind tunnel.

User currently offlineBuzz From United States of America, joined Nov 1999, 697 posts, RR: 20
Reply 4, posted (14 years 7 months 1 day 15 hours ago) and read 5181 times:

Hi Dc10tony and Tedski, Buzz here. I'll have to disagree with Tedski, since that AA DC-10 roll-over-and-die at ORD, the DC-10 have had a lock installed on the leading edge slat drive wheel and cable. Yes, there is a big wheel that pulls cables, thumped my head on it a few times. And i like Lockheed aircraft, we only had 6 of the L1011-500's to compare with the almost 60 DC-10's we were flying.

I'm not an expert at aerodynamics, but one thought: There's a mighty downwash of air coming off the wing, sometimes the horizontal tail has a lot of dihedral to get some of it out of the downwash as you get to higher angles of attack.

Buzz Fuselsausage: Line Mechanic by night, DC-3 Crew Chief by choice

User currently offlineMirrodie From United States of America, joined Apr 2000, 7459 posts, RR: 60
Reply 5, posted (14 years 7 months 1 day 14 hours ago) and read 5173 times:
Support Airliners.net - become a First Class Member!

Can anyone show a vid or link showing Flap ops on the 1011??

Forum moderator 2001-2010; He's a pedantic, pontificating, pretentious bastard, a belligerent old fart, a worthless st
Top Of Page
Forum Index

Reply To This Topic DC10 & L-1011: Wing And Flap Question
No username? Sign up now!

Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)

Similar topics:More similar topics...
B-720 And B-720B Flap-Question posted Fri Jul 20 2007 21:37:06 by Blackbird
Tape On Windows & Doors, And Toilet Question posted Thu Apr 7 2005 01:47:39 by Sul
Bank Angle Protection Airbus And Boeing Question posted Sun May 21 2006 12:00:09 by JulianUK
Wing/Fuel Tank Question posted Tue May 2 2006 16:16:47 by 777DadandJr
737NG/BBJ Flap Question On Takeoff posted Mon Mar 28 2005 04:44:08 by FLY777UAL
DHC-8-100/200/300 And Q-400 Question. posted Tue Oct 26 2004 19:41:43 by N737MC
Pilots: Seniority And Advancement Question posted Thu Sep 23 2004 20:19:49 by RogueTrader
Wing Mounted Engine Question posted Wed Aug 18 2004 08:26:45 by Videns
727 & L-1011 S Ducts posted Wed Feb 25 2004 09:41:43 by KBUF737
Wing And Center Fuel Tanks posted Sat Jan 10 2004 20:10:17 by Bragi

Sponsor Message:
Printer friendly format