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Why The Nose Of A321 Like This?  
User currently offlineVietsky From Vietnam, joined Nov 2008, 94 posts, RR: 0
Posted (5 years 5 months 2 weeks 4 days 18 hours ago) and read 8235 times:

Dear A. friends,

I'm usually fly on VNA 321. And sometimes I flown on the aircraft that has nose like this. I'm always curious on why. Could you guy explain me why? This is happened to VNA, does other have the same? or just Airbus/VNA


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Photo © Sneeze Lam



Thanks guys!

Vietsky

32 replies: All unread, showing first 25:
 
User currently offlineZappbrannigan From Australia, joined exactly 6 years ago today! , 247 posts, RR: 0
Reply 1, posted (5 years 5 months 2 weeks 4 days 18 hours ago) and read 8230 times:

Could just be a temporary replacement nose cone... like the Virgin 737 that taxied into the side of the terminal here, it was a white 737-300 used during their startup period, and they only had red noses (due to the rest of their fleet being red), so it was flying around with a red nose for ages - I think they just left it on for Red Nose day and pretended it was deliberate.

This could be a temporary nose cone, or it could have been borrowed from another airline (seen that here in MEL a couple of times too).


User currently offline320tech From Turks and Caicos Islands, joined May 2004, 491 posts, RR: 5
Reply 2, posted (5 years 5 months 2 weeks 3 days 16 hours ago) and read 7878 times:

Looks to me like a repaired radome that hasn't been painted yet. The black part is the carbon fibre material, and I have to assume the white portion is either paint or some other coating to prevent erosion until it is properly painted.

Why you would see this on a regular basis, I have no idea. Radomes can get damaged by hail, birds, or ground handling, but it's not that common. You definitely wouldn't want to leave it like this for long.



The primary function of the design engineer is to make things difficult for the manufacturer and impossible for the AME.
User currently offlineTdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 3, posted (5 years 5 months 2 weeks 3 days 13 hours ago) and read 7842 times:

Quoting 320tech (Reply 3):
The black part is the carbon fibre material, and I have to assume the white portion is either paint or some other coating to prevent erosion until it is properly painted.

I thought you shouldn't make a radome from carbon fiber...carbon fiber is too conductive to be radar transparent. Radomes are usually fiberglass or kevar for that reason. It's possible that the front white part is non-carbon and back part (behind the beam sweep area) is carbon, but that seems unnecessarily complex.

Tom.

[Edited 2009-04-18 00:38:52]

User currently offlineIrish251 From Ireland, joined Nov 2004, 976 posts, RR: 4
Reply 4, posted (5 years 5 months 2 weeks 2 days ago) and read 7489 times:

It is a replacement nose cone - like in this photo:


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Photo © Marco Toso - SpotIT



User currently offline474218 From United States of America, joined Oct 2005, 6340 posts, RR: 9
Reply 5, posted (5 years 5 months 2 weeks 2 days ago) and read 7465 times:

Quoting 320tech (Reply 3):
The black part is the carbon fibre material,



Quoting Tdscanuck (Reply 4):
Radomes are usually fiberglass or kevar for that reason.

Correct, the majority of radomes are made of "epoxy resin impregnated glass cloth" (fiberglass).

[Edited 2009-04-19 14:14:56]

User currently offlineVietsky From Vietnam, joined Nov 2008, 94 posts, RR: 0
Reply 6, posted (5 years 5 months 2 weeks 1 day 18 hours ago) and read 7361 times:

Thanks Guys for the explanation. I saw couples for VNA 321 birds that have the nose like that.

Pretty funny and ugly. Just wish after the replacement, they should paint it.

Vietsky


User currently offline320tech From Turks and Caicos Islands, joined May 2004, 491 posts, RR: 5
Reply 7, posted (5 years 5 months 2 weeks 15 hours ago) and read 7144 times:



Quoting 474218 (Reply 6):
the majority of radomes are made of "epoxy resin impregnated glass cloth" (fiberglass).

Sorry, I meant to just say "composite", rather than carbon fibre. I couldn't recall offhand what radomes are made from.



The primary function of the design engineer is to make things difficult for the manufacturer and impossible for the AME.
User currently offlineEMBQA From United States of America, joined Oct 2003, 9364 posts, RR: 11
Reply 8, posted (5 years 5 months 2 weeks 7 hours ago) and read 7061 times:

The black part is the Anti-Static paint. It's a bonding paint used on composite surfaces to better bond the composite to the structure. What is odd here is I've always been told and read you can not fly it in that condition. It must be at least in primer.


"It's not the size of the dog in the fight, but the size of the fight in the dog"
User currently offlineNBGSkyGod From United States of America, joined May 2004, 819 posts, RR: 1
Reply 9, posted (5 years 5 months 2 weeks 4 hours ago) and read 7027 times:

It looks like the standard airbus primer nose cone color. If you look at some of the unpainted A320srs before they are painted, and in flight test they have that coloring.


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Photo © Fabian Rausch



[Edited 2009-04-21 09:41:30]


"I use multi-billion dollar military satellite systems to find tupperware in the woods."
User currently offlineEcuadorianMD11 From , joined Dec 1969, posts, RR:
Reply 10, posted (5 years 4 months 3 weeks 2 days 2 hours ago) and read 6419 times:

Interesting,

I always wondered about this KLM MD-11 arriving in the early morning at GYE (from BON and AMS), about a year ago. Is this the same story, a recent nose replacement and no time to paint?

It isn´t the greatest of pictures but it illustrates my point:

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Anybody knows any details?

I always watch this beautiful plane landing at GYE when I wait for family and friends to arrive from AMS, (this explains my AIRLINERS.NET nickname) but normally it doesn´t land white-nosed!


User currently offlineStarlionblue From Greenland, joined Feb 2004, 17055 posts, RR: 67
Reply 11, posted (5 years 4 months 3 weeks 1 day 21 hours ago) and read 6311 times:



Quoting EcuadorianMD11 (Reply 10):
Is this the same story, a recent nose replacement and no time to paint?

Probably. Happens all the time.



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineDocLightning From United States of America, joined Nov 2005, 19804 posts, RR: 59
Reply 12, posted (5 years 4 months 3 weeks 1 day 5 hours ago) and read 6092 times:



Quoting EcuadorianMD11 (Reply 10):
Is this the same story, a recent nose replacement and no time to paint?

A nose cone is a rather flimsy structure that also happens to get the brunt of the aerodynamic forces and any solid object that happens to be in front of the plane.

So they get replaced a lot.


User currently offlineEcuadorianMD11 From , joined Dec 1969, posts, RR:
Reply 13, posted (5 years 4 months 5 days 19 hours ago) and read 5437 times:

A nose change happens so often?
I haven´t seen many battered "overdue" noses, but maybe I just never paid attention.

Odd, at the MD 11 pic they obviously found the time to paint the dark blue line but an awkwardly timed coffee break (or something like that) caused the plane to leave white nosed.

Is there a KLM maintenance guy / lass on Airliners.net at all?
I´d like to ask him / her some tough questions! Beware!!

I presume the nose cone damage comes down to "gliding debris", stuff that the aircraft runs in to that subsequently damages the nose. Do windshields need to be replaced often, and / or wipers for that matter? They take some hammering as well, yeah?

Cheers,

Ecuadorian MD11


User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 14, posted (5 years 4 months 5 days 11 hours ago) and read 5345 times:



Quoting EcuadorianMD11 (Reply 13):
Is there a KLM maintenance guy / lass on Airliners.net at all?
I´d like to ask him / her some tough questions! Beware!!

What makes you think you'd get official responses on a public forum  wink 

Quoting EcuadorianMD11 (Reply 13):
I presume the nose cone damage comes down to "gliding debris", stuff that the aircraft runs in to that subsequently damages the nose

The Radome "condom" helps a lot in delaying damage to the nose by forming a coat on the front.

regds
MEL.



Think of the brighter side!
User currently offlineStarlionblue From Greenland, joined Feb 2004, 17055 posts, RR: 67
Reply 15, posted (5 years 4 months 5 days 11 hours ago) and read 5339 times:



Quoting EcuadorianMD11 (Reply 13):
Do windshields need to be replaced often, and / or wipers for that matter? They take some hammering as well, yeah?

Windshields, not as often. But they are much tougher.



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 16, posted (5 years 4 months 5 days ago) and read 5235 times:



Quoting Starlionblue (Reply 15):
Windshields, not as often. But they are much tougher.

Heated windshields are tougher until the heat control unit mal;functions.  wink 
regds
MEL.



Think of the brighter side!
User currently offlineEcuadorianMD11 From , joined Dec 1969, posts, RR:
Reply 17, posted (5 years 2 months 3 weeks 3 days 21 hours ago) and read 4223 times:



Quoting HAWK21M (Reply 14):
What makes you think you'd get official responses on a public forum

In this case I don´t think, I hope...........

Anyone:

Quoting EcuadorianMD11 (Reply 13):
Is there a KLM maintenance guy / lass on Airliners.net at all?
I´d like to ask him / her some tough questions! Beware!!

At all?

Ecuadorian MD11


User currently offlineViscount724 From Switzerland, joined Oct 2006, 25459 posts, RR: 22
Reply 18, posted (5 years 2 months 3 weeks 3 days 19 hours ago) and read 4171 times:



Quoting HAWK21M (Reply 16):
Quoting Starlionblue (Reply 15):
Windshields, not as often. But they are much tougher.

Heated windshields are tougher until the heat control unit mal;functions.

As on this WestJet 737-700 a day or two ago (from Transport Canada daily incident summary):

Westjet Boeing 737-700 (C-GWBJ), operating as WJA343, was en route from Edmonton to Kelowna. At about 90 NM northeast of Kelowna while descending through FL270, the captain's forward window began arcing in the upper right-hand corner and then cracked. The crew completed the window damage QRH checklist and the arcing stopped when power was removed from the window. After consulting with company maintenance by radio, it was decided to divert to Calgary for maintenance action. The aircraft subsequently landed at Calgary without further event.


User currently offlineSoon7x7 From , joined Dec 1969, posts, RR:
Reply 19, posted (5 years 2 months 3 weeks 3 days 18 hours ago) and read 4162 times:



Quoting EcuadorianMD11 (Reply 13):

Radomes are subject to sand blasting erosion at altitude by ice crystals and are sometimes covered with a clear silicone film to resist that effect. Actually seen more on private jets. Aside from bird strikes they last a long time but MX's must be vigilant for delaminations for obvious reasons, it's the first component of the streamlining process. I just happen to have one...it is seven feet across and can be picked up by one person. This one is from a 747. Weighs about 115 lbs...j
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User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 20, posted (5 years 2 months 3 weeks 3 days 13 hours ago) and read 4093 times:

Coincidenly tonight I noticed a Radome on an AI A320 in a real bad shape due rain damage.Guess it would be replaced soon.
regds
MEL.



Think of the brighter side!
User currently offlineEcuadorianMD11 From , joined Dec 1969, posts, RR:
Reply 21, posted (5 years 2 months 3 weeks 3 days ago) and read 3954 times:



Quoting Soon7x7 (Reply 19):
I just happen to have one...it is seven feet across and can be picked up by one person.

Great! May I be the one to pick it up from you then!?? I´d come alone.............
Makes a good base for a decent size (glass) dinner table!

Nice one mate, odd color though!
What airline was that?
Ecuadorian MD11


User currently offlineSoon7x7 From , joined Dec 1969, posts, RR:
Reply 22, posted (5 years 2 months 3 weeks 2 days 18 hours ago) and read 3858 times:



Quoting EcuadorianMD11 (Reply 21):

Evergreen, N481EV...neighbors love it...told them ,get used to it or I'll bring home the whole plane!


User currently offlineBWilliams From United States of America, joined Sep 2007, 212 posts, RR: 0
Reply 23, posted (5 years 2 months 3 weeks 2 days 16 hours ago) and read 3841 times:



Quoting Soon7x7 (Reply 22):

I'm jealous, Soon7x7 ... how in God's name did you score a nosecone, sir ... that's awesome.



Regards, Brad Williams
User currently offlineSoon7x7 From , joined Dec 1969, posts, RR:
Reply 24, posted (5 years 2 months 3 weeks 1 day 10 hours ago) and read 3682 times:



Quoting BWilliams (Reply 23):

ebay!...I kid you not...I couldn't resist...j  drool 


25 Braniff747SP : Soon7x7, do you remember the name of the seller?
26 BMI727 : I go to STL fairly often and it isn't at all uncommon to see a Chatauqua or other RJ with a mismatched nosecone. I remember seeing a picture a while b
27 Smcmac32msn : Maybe it was cold up there and all the "blood" left the nose
28 Soon7x7 : negative, but I do have a copy somewhere of the item ebay auction...somewhere...
29 Soon7x7 : It's easy to obtain goodies like this nose...just get out to Mohave, Tucson...any of the boneyards, after the scrapers cannobolize the plane for rota
30 EcuadorianMD11 : Yep, if you live in the States that is........... Still waiting for somebody to give me a hint concerning scrapyards in Western Latin America. They d
31 BWilliams : Ya don't say ... the scrapyards will sell parts like that to any-old airnut, if they can't be recertified for flight? I figured they'd just crush the
32 Soon7x7 : Yes...They can get more for certain items from an airliner nut than the scrap weight would yield. A place such as Mirana...No...unless you have a con
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