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A380: Landing Gear Retraction  
User currently offlineA380900 From France, joined Dec 2003, 1106 posts, RR: 1
Posted (9 years 2 months 3 weeks 5 days 17 hours ago) and read 14151 times:

This picture shows the retraction of the main landing gear.

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Click here for bigger photo!

Photo © French Frogs AirSlides


During gear retraction, It looks like the 6 wheels gear door open, then a small part of them fold and they close with an opening this time. Is that so? Is it only a feature of the A380 or do other airliners have the same kind of retraction?

Here are the picture with gear extended:

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Photo © Johan Menten



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Photo © Anne Deus



19 replies: All unread, jump to last
 
User currently offlineStarlionblue From Greenland, joined Feb 2004, 17002 posts, RR: 67
Reply 1, posted (9 years 2 months 3 weeks 5 days 1 hour ago) and read 13722 times:

The 747 is pretty similar for the body gear.


"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineBrons2 From United States of America, joined Sep 2001, 3007 posts, RR: 4
Reply 2, posted (9 years 2 months 3 weeks 5 days 1 hour ago) and read 13692 times:

who's the landing gear subcontractor on the A380? Goodrich?


Firings, if well done, are good for employee morale.
User currently offlineBill142 From Australia, joined Aug 2004, 8440 posts, RR: 8
Reply 3, posted (9 years 2 months 3 weeks 5 days 1 hour ago) and read 13671 times:

Quoting Brons2 (Reply 2):
who's the landing gear subcontractor on the A380? Goodrich?

I believe so. The tyres are Michelin tyres which are similar to those developed for the Concorde.


User currently offlineAir2gxs From , joined Dec 1969, posts, RR:
Reply 4, posted (9 years 2 months 3 weeks 5 days 1 hour ago) and read 13670 times:

The subcontractor is probably Messier.

The door your talking about is probably a fixed door attached to the body gear. I couldn't tell from the pictures, but it appears that it would attach to the front of the gear and "close" as the gear retracts.


User currently offlineMark_D. From Canada, joined Aug 2001, 1447 posts, RR: 5
Reply 5, posted (9 years 2 months 3 weeks 4 days 11 hours ago) and read 13262 times:

main gear:
http://www.flightdailynews.com/singapore2004/02_24/hall/a380.shtm

actuation systems:
biz.yahoo.com/pz/040719/60972.html



This is kind of an interesting pdf:

http://www.casi.ca/CD-ROMs/AGM/2003/papers/251.pdf


User currently offlinePihero From France, joined Jan 2005, 4392 posts, RR: 76
Reply 6, posted (9 years 2 months 3 weeks 4 days 3 hours ago) and read 12981 times:
Support Airliners.net - become a First Class Member!

Mark_D ,

Thanks for this link which shows a superb piece of engineering .

Regards



Contrail designer
User currently offlineMonteycarlos From Australia, joined Mar 2005, 2107 posts, RR: 28
Reply 7, posted (9 years 2 months 3 weeks 4 days 3 hours ago) and read 12958 times:

Quoting Bill142 (Reply 3):
The tyres are Michelin tyres which are similar to those developed for the Concorde.

Thats probably a good thing because otherwise the A380 might not qualify any better than 7th for the next GP!



It's a beautiful night to fly like a phoenix...
User currently offlineGlom From United Kingdom, joined Apr 2005, 2815 posts, RR: 10
Reply 8, posted (9 years 2 months 3 weeks 4 days 2 hours ago) and read 12893 times:

Any pictures with the gear full retracted?

User currently offlineHAWK21M From India, joined Jan 2001, 31667 posts, RR: 56
Reply 9, posted (9 years 2 months 3 weeks 4 days 2 hours ago) and read 12824 times:

GOODRICH
regds
MEL



Think of the brighter side!
User currently offlineCPH-R From Denmark, joined May 2001, 5981 posts, RR: 3
Reply 10, posted (9 years 2 months 3 weeks 4 days 2 hours ago) and read 12796 times:

Discovery had a 2 hour documentary on the A380 last night, which included a bit on Goodrich & the test they did to see if the landing gear would withstand the forces on impact. Quite interesting, really.

Of course, as a lead up, they showed the low res clip of a KE 747 doing a horrible landing at Kai Tak, to point out the forces that may act upon a landing gear.


User currently offlinePanHAM From Germany, joined May 2005, 9170 posts, RR: 29
Reply 11, posted (9 years 2 months 3 weeks 4 days 1 hour ago) and read 12767 times:

Quoting Monteycarlos (Reply 7):

No worries, they haven't painted it red.  Wink



E's passed on! That parrot is no more! He has ceased to be! E's expired and gone to meet 'is maker!
User currently offlineCrewrest From United Kingdom, joined Aug 2001, 93 posts, RR: 1
Reply 12, posted (9 years 2 months 3 weeks 4 days ago) and read 12639 times:

Quoting Monteycarlos (Reply 7):
Thats probably a good thing because otherwise the A380 might not qualify any better than 7th for the next GP!

LOL


User currently offlineJush From Germany, joined Apr 2005, 1636 posts, RR: 3
Reply 13, posted (9 years 2 months 3 weeks 4 days ago) and read 12550 times:

If you'd like to see how it retracts. If you follow the www.airbus.com page to the videos of the maiden flight you see a complete retraction scene....

Nice to see... you should check it out though

Matt



There is one problem with airbus. Though their products are engineering marvels they lack passion, completely.
User currently offlineSquirrel83 From , joined Dec 1969, posts, RR:
Reply 14, posted (9 years 2 months 3 weeks 3 days 23 hours ago) and read 12482 times:

Quoting Brons2 (Reply 2):
who's the landing gear subcontractor on the A380? Goodrich?

In Toulouse, France on April 27, 2005 the Airbus A380 took to the skies for the first time. Goodrich technology was on board for this revolutionary aircraft's test flight.

Goodrich is one of the world's largest suppliers of landing systems and provides both the main body and wing landing gear for the A380. Though Goodrich was already a major supplier for Airbus, it was the first time the company had been selected to provide landing gear for an Airbus aircraft. The components for the landing gear system are produced by Goodrich’s Landing Gear division and involve manufacturing facilities at Oakville, Ontario, Canada; Cleveland, Ohio; Tullahoma, Tennessee; and Krosno, Poland. The final gear integration takes place at the Goodrich facility in Toulouse, France before delivery to Airbus’ final assembly line.

Along with providing state of the art landing gear for the A380, Goodrich is also launching the next generation of evacuation systems with its A380 work package. Goodrich will supply 16 evacuation slide systems per aircraft, which are designed to be 10% lighter than current slides while still meeting all performance requirements.

Goodrich is also supplying innovative High-Density Discharge (HID) and LED-based exterior lighting, award-winning variable frequency technology for the aircraft’s power generation system (through its Aerolec joint venture with Thales) and flight controls that take advantage of the latest power by wire technology. And Goodrich will provide the primary and standby air data systems. The primary air data system will feature SmartProbeTM, another new Goodrich technology, which uses innovative multi-function sensing probes to aid reliability.

Goodrich is also providing an automatic ice detection system, and will bring its experience in aircraft materials and structures to bear in the development of the aircraft’s cargo system and with several structural components. Most recently, Goodrich was selected by Airbus to provide the aircraft’s cabin attendant and cockpit occupancy seats.

http://www.goodrich.com/Feature/SingleStory/0,1285,63,00.html


User currently offlineCgagn From Canada, joined Sep 2003, 345 posts, RR: 0
Reply 15, posted (9 years 2 months 3 weeks 3 days 17 hours ago) and read 12185 times:

What would we do without KE to show us how not to land at kai-tak  Wink


Widebodies flown on: A330-300,A340-300,A380-800,747-400,767-200ER,767-300ER,777-200A,777-200ER,777-200LR,777-300ER
User currently onlineKlaus From Germany, joined Jul 2001, 21416 posts, RR: 54
Reply 16, posted (9 years 2 months 3 weeks 3 days 13 hours ago) and read 12002 times:

The outer body gear doors do indeed have a sub-segment each which folds out only when the gear is retracted. When it is extended this extra panel (which is hinged on the main door panel) is folded away to leave an opening just for the pylon.

The option to mechanically link the cover panel to the strut does not exist with the retraction mechanism used; The fold-away panel probably reduces drag and noise as well vs. a panel sticking out together with the extended pylon.


User currently onlineKlaus From Germany, joined Jul 2001, 21416 posts, RR: 54
Reply 17, posted (9 years 2 months 3 weeks 3 days 12 hours ago) and read 11983 times:

By the way, this thread is related: Airliners.net Tech Ops: A380 Undercarriage

User currently offlineHAWK21M From India, joined Jan 2001, 31667 posts, RR: 56
Reply 18, posted (9 years 2 months 3 weeks 3 days 4 hours ago) and read 11915 times:

Quoting Jush (Reply 13):
If you'd like to see how it retracts. If you follow the www.airbus.com page to the videos of the maiden flight you see a complete retraction scene....

The Video of the A380 sequence demonstrates that the Retraction cycle is very slow approx 16-17 secs.Is this normal.
regds
MEL



Think of the brighter side!
User currently offlineStarlionblue From Greenland, joined Feb 2004, 17002 posts, RR: 67
Reply 19, posted (9 years 2 months 3 weeks 3 days ago) and read 11889 times:

Quoting HAWK21M (Reply 18):
The Video of the A380 sequence demonstrates that the Retraction cycle is very slow approx 16-17 secs.Is this normal.

Faster than a DC-3 Big grin



"There are no stupid questions, but there are a lot of inquisitive idiots."
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