Go Back  PPRuNe Forums > Flight Deck Forums > Tech Log
Reload this Page >

777 to get folding wings...

Wikiposts
Search

Notices
Tech Log The very best in practical technical discussion on the web

777 to get folding wings...

Thread Tools
 
Search this Thread
 
Old 7th November 2012 | 09:46
  #21 (permalink)  
 
Joined: Feb 2000
Posts: 78
Likes: 0
From: uk
reminds me of the new adage

how do you know there is an A380 pilot in the room....he'll tell you
111boy is offline  
Reply
Old 7th November 2012 | 09:49
  #22 (permalink)  
Community Builder
 
Joined: Jan 2008
Posts: 17,731
Likes: 2,105
From: Reading, UK
the other issue is the length of the aircraft which is more restrictive in a lot of places than the wingspan
That will be covered in the next patent application ...

DaveReidUK is offline  
Reply
Old 7th November 2012 | 09:53
  #23 (permalink)  
 
Joined: Nov 2000
Posts: 645
Likes: 0
Boeing should (and will) be able to fit any aerodynamic and range performance needed within any given span requirement without using folding wings.
Makes you wonder what their range plans are for any future X with all that span?
Thought expensive oil killed ULR flights? Maybe not?

Last edited by Kerosene Kraut; 7th November 2012 at 10:23.
Kerosene Kraut is offline  
Reply
Old 7th November 2012 | 16:55
  #24 (permalink)  
25 Anniversary
Veteran: Navy
 
Joined: May 2000
Posts: 3,204
Likes: 2
From: Seattle
Boeing already has the swingtail 747, so no need for another patent.
Boeing: Boeing 747 Large Cargo Freighter Successfully Tests Swing Tail
Intruder is offline  
Reply
Old 7th November 2012 | 18:49
  #25 (permalink)  
Community Builder
 
Joined: Jan 2008
Posts: 17,731
Likes: 2,105
From: Reading, UK
Oops, clean forgot about that one.

DaveReidUK is offline  
Reply
Old 7th November 2012 | 20:15
  #26 (permalink)  
Thread Starter
 
Joined: Mar 2011
Posts: 1,407
Likes: 0
From: engineer at large
Russians have the patent on Ugly...


Last edited by FlightPathOBN; 7th November 2012 at 20:16.
FlightPathOBN is offline  
Reply
Old 7th November 2012 | 20:17
  #27 (permalink)  
Thread Starter
 
Joined: Mar 2011
Posts: 1,407
Likes: 0
From: engineer at large
FlightPathOBN is offline  
Reply
Old 7th November 2012 | 21:00
  #28 (permalink)  
 
Joined: Feb 2008
Posts: 420
Likes: 3
From: In the Old Folks' Home
I'll start worrying when Boeing add the launch-bar on the nose-gear for EMALS/catapult launches!
What's to worry about? A catapult launch capability and a hook for landings would make it possible to use much shorter fields with lower landing fees.
Smilin_Ed is offline  
Reply
Old 7th November 2012 | 22:26
  #29 (permalink)  
Thread Starter
 
Joined: Mar 2011
Posts: 1,407
Likes: 0
From: engineer at large
FlightPathOBN is offline  
Reply
Old 7th November 2012 | 22:31
  #30 (permalink)  
 
Joined: Sep 2000
Posts: 614
Likes: 0
From: UK
5 4 3 2 1.......

Thunderbirds are GO!!!!!

BN2A is offline  
Reply
Old 8th November 2012 | 08:17
  #31 (permalink)  
 
Joined: Mar 2004
Posts: 470
Likes: 0
From: Oxfordshire
Why not make them swing-wing instead? Save space on the ground and look like Concorde in flight. Bonus!
glum is offline  
Reply
Old 9th November 2012 | 08:51
  #32 (permalink)  
 
Joined: Apr 2011
Posts: 70
Likes: 0
From: old continent
The 71.1m wing would also push the 777 from ICAO Code E airport classification to Code F standards, the same category occupied by the 747-8 and A380. Under study is a revival of the original 777-200 wing-fold concept, which would have tilted upward a 6.9m (22ft 6in) portion of the wing that included the outer two leading edge slats and outboard aileron to accommodate McDonnell Douglas DC-10-sized gates.

Boeing's current concept scales back the weight and complexity of the design by folding only the raked wingtip, which is understood to be a 3.4m (11ft) portion of the wing, and does not house any wing control surfaces.

In short, Boeing would maintain Code E standards on the ramp and taxiway, up to 65m (213ft 4in), in line with today's 777-300ER, and shift to a Code F classification upon entering the runway.
cedgz is offline  
Reply
Old 9th November 2012 | 10:27
  #33 (permalink)  
Community Builder
 
Joined: Jan 2008
Posts: 17,731
Likes: 2,105
From: Reading, UK
and shift to a Code F classification upon entering the runway
Yes, that would be one checklist item you really wouldn't want to overlook.
DaveReidUK is offline  
Reply
Old 9th November 2012 | 10:46
  #34 (permalink)  
 
Joined: Apr 2011
Posts: 70
Likes: 0
From: old continent
let's hope they will put a nice fancy alarm when throttles will be advanced when their 11ft winglets are present
cedgz is offline  
Reply
Old 9th November 2012 | 19:55
  #35 (permalink)  
20 Anniversary
 
Joined: Feb 2004
Posts: 1,410
Likes: 37
From: Australia
Well that would be stupid and pointless. The 380 has an UNFOLDED and UNFOLDABLE wingspan of 261ft plus........................... And it seems to fit into many airports now.
Seems that a few people don't understand the problems the A380 has caused and is still causing. At LAX for example. The A380 causes a lot of congestion when this aircraft moves about this airport, because of wingspan. Unfortunately, not all the grumblings are evident on the pilot/ATC airwaves.

The amount of infrastructure changes required for smaller airports such as Sydney can be prohibitively expensive: New aerobridges, greater spacing between gates, taxiway widening (and subsequent repositioning of roads on the margins of taxiways), new servicing vehicles to be able to reach the A380's upper deck doors (catering on 747s is often done via the main deck doors, with the Upper Deck being serviced by the aircraft's cart elevator), etc.
NSEU is offline  
Reply
Old 9th November 2012 | 20:53
  #36 (permalink)  
15 Anniversary
 
Joined: Apr 2008
Posts: 259
Likes: 41
From: London
I do seem to remember the original 777 design did have the folding wingtips as an option, but wasn't taken up.
Yes, Boeing developed it as part of the 'Working Together'* framework after a request from American. The idea would be that AA would use the 777 on DC-10 sized domestic gates.

From then on, AA declined to be a launch customer of the 777, but eventually ordered it quite some time later - without winglets.

(*Incidentally, as part of WT, a certain Big Airline based in north-west Europe was very keen that the 777 have a sidestick and not a yoke.)
Lord Bracken is offline  
Reply
Old 9th November 2012 | 21:19
  #37 (permalink)  
20 Anniversary
 
Joined: Apr 2004
Posts: 461
Likes: 0
From: wales
yes , considering the USA introduced the sidestick to the world via the F16 , Boeing couldnt because the 'good old boys ' couldnt accept it from the big airlines. Remember Boeing had to put a flight engineers station on the 767 for one outfit......
bvcu is offline  
Reply
Old 10th November 2012 | 19:30
  #38 (permalink)  
15 Anniversary
 
Joined: Sep 2007
Posts: 603
Likes: 6
From: London
As a matter of interest what kind of weight penalty are we talking about for a pair of folding wings?
Peter47 is offline  
Reply
Old 12th November 2012 | 12:28
  #39 (permalink)  
 
Joined: May 2008
Posts: 200
Likes: 0
From: UK
About 700 nm.

They should make the wings like gliders wings - have a crew at the runway slot them in before takeoff and take them out after landing - much easier. Wingspan at the gate would be zero. Don't worry about the engines - got a tug for that. Aircraft can share wings. Reduced engine count and reduced costs.

Last edited by ECAM_Actions; 12th November 2012 at 12:31.
ECAM_Actions is offline  
Reply
Old 13th November 2012 | 04:55
  #40 (permalink)  
 
Joined: Jun 2009
Posts: 2,167
Likes: 2
From: Australia
I'd be worried if AB were planning a folding wing.....
nitpicker330 is offline  
Reply


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.