a380900
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Why No Paint On Wings?

Wed May 05, 2004 7:55 pm

It looks that the wings of airliners are all gray and never entirely painted like the fuselage. They are also always the same color. Why is it? Is it really always? Any pics of airliners with painted wings?

 
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TS-IOR
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RE: Why No Paint On Wings?

Wed May 05, 2004 8:05 pm


It would reduce the aerodynamic performance of wings may be ?
 
kaddyuk
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RE: Why No Paint On Wings?

Wed May 05, 2004 9:14 pm

It is to reduce weight...

Do you know how much paint weighs... a TON! litteraly... And who is actually going to see it? no one on the approach cos they are below the wings and anyone on the aeroplane already knows about the airline they are flying on.

Whoever said "laughter is the best medicine" never had Gonorrhea
 
INNflight
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RE: Why No Paint On Wings?

Wed May 05, 2004 10:01 pm

I can understand this, but look at the rudder of Germanwings ( just as an example ) ... why do they paint the fins? There, really NOBODY can see it. Useless IMO.


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regards, Florian
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ConcordeBoy
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RE: Why No Paint On Wings?

Thu May 06, 2004 1:24 am

Do you know how much paint weighs... a TON! litteraly...

Not quite.

IIRC, the paint job (on a 772 in this case) countributes just over 400lb to the aircraft's weight.
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citationjet
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RE: Why No Paint On Wings?

Thu May 06, 2004 1:45 am

INNflight,
What do you mean nobody can see the painted rudder?
EVERYONE can see the rudder, except the 100 people onboard the aircraft. Based on your argument, the same goes for ANY painted surface such as the fuselage.
If nobody sees the painted rudders, then why do airlines spend money to put tail "logo lights" on the vertical tail?

[Edited 2004-05-05 18:54:18]
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flyf15
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RE: Why No Paint On Wings?

Thu May 06, 2004 2:39 am

Wings usually are painted..............


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flightsimfreak
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RE: Why No Paint On Wings?

Thu May 06, 2004 5:34 am

What are you talking about... The rudder is probably the most seen part of the aircraft, especially over fences or through a sea of jetways, other aircraft, and ground equipment. The rudder is practically a billboard for the airline.
 
aloges
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RE: Why No Paint On Wings?

Thu May 06, 2004 5:42 am

Either Florian was facetiously talking about the rudder, or seriously talking about the horizontal stabilisers.

By the way, this looks painted:
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wilco
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RE: Why No Paint On Wings?

Thu May 06, 2004 6:03 am

This has been discussed time and time again over in civil aviation.... general consensus was that the weight/labor costs was more than the marketing potential.

Livery is marketing

Of course we are talking about livery painting, not just any old paint. obviously all wings have sort of coating painted on, usually a solid bland color.

So ask this question.... why isn't the roof of trains, buses or trucks painted? Well they are painted with a basic coat but not with a corporate logo/livery....

As for passengers in the plane... their viewing angle is insufficient to take-in a wing livery.... HOWEVER a wingtip at 90 degrees is ideal.... no surprise that these wingtips are often the only part of the wing structure with livery.

regards,
WILCO

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QantasA332
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RE: Why No Paint On Wings?

Thu May 06, 2004 6:57 am

It would reduce the aerodynamic performance of wings maybe?

To put it bluntly, no. Even 'unpainted' wings have a finish (of sorts) applied, and this finish is almost completely -- if not completely -- identical to paint in terms of causing skin friction drag. Even between bare metal and paint, differences in drag would be quite tiny. Rather, as everyone else has said, there are so few painted wings simply because of their high weight penalty. For a surface that is, for the most part, not highly visible, paint is a waste...

Cheers,
QantasA332
 
greasespot
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RE: Why No Paint On Wings?

Thu May 06, 2004 7:56 am

We used to have painted wings at 7F.......But the skydrol leaking from actuators peeled the paint and looks terrible.......at least with bare wings you just wipe them off...I believe some of our 737's have painted wings still..........

GS
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Mr Spaceman
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RE: Why No Paint On Wings?

Thu May 06, 2004 8:25 am

Hi guys.

Then you have airlines with every inch of their aircraft painted (except for static ports, antennas, etc) such as this Virgine Blue 737-8 (VH-VOH).

The wings are painted ..........


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The engines are painted ..........


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The whole fuselage is painted ..........


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Photo © Montague Smith



Regarding the vertical tail & rudder being a billboard for an airline, this type of advertising has to be one of the best! Big grin


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Chris  Smile

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lehpron
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RE: Why No Paint On Wings?

Thu May 06, 2004 8:38 am

What are you guys going on about, NOBODY said the RUDDER is not seen!

I figure from a non-technical point of view, nobody 'sees' the wing. that is why so many layfolks think it is the engine that gets the plane off the ground because along the sideprofile, no wing is visible to the layeye. They see the wing, but they don't 'see' it, like with their brain, as if it was supposed to do something...

From an advertising spec, there is no point to paint the wing, 'less you a combat plane, and your top/side profile interchange daily. Big grin
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Mr Spaceman
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RE: Why No Paint On Wings?

Thu May 06, 2004 9:24 am

Hi guys.

>> A380900, I guess this is what you probably mean by wings that don't have a nice "shinny" coating of paint on them. They look rather dull.


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Chris  Smile
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citationjet
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RE: Why No Paint On Wings?

Thu May 06, 2004 11:02 am

Lehpron,
See Reply 3
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INNflight
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RE: Why No Paint On Wings?

Thu May 06, 2004 9:14 pm

Sorry guys, I apologize, I was talking about the horizontal stabilisers... shame on me!

regards, Florian
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GoAllegheny
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RE: Why No Paint On Wings?

Fri May 07, 2004 2:04 am

So what is the purpose of painting the top of a wing, even if it is a bland gray paint? Corrosion prevention? Something else?
 
airplay
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RE: Why No Paint On Wings?

Fri May 07, 2004 2:56 am

Finishing any surface with a protective coating is a good idea just like the wings, most of which are painted.

This prevents the loss and damage of the aluminum cladding of the airframe parts by air erosion and cleaning.

The pure aluminum cladding on the aluminum alloy skin is very thin and can be rubbed off.

With respect to composite parts (graphite, carbon fibre, fibreglass/kevlar) a protective coating prevents exposure to sunlight that can degrade the materials and from ingress of moisture through scratches and gouges.

Think of how long the wood on your house would last without some protective coating.

Of course some parts need to remain unpainted such as leading edges and engine intakes. These parts are made of stainless steel or some other durable material or are sometimes plated with chrome or other protective coating.
 
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Starlionblue
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RE: Why No Paint On Wings?

Fri May 21, 2004 2:42 am

And so the conclusion is, as usual, $$$ and cents.
"There are no stupid questions, but there are a lot of inquisitive idiots."
 
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Cadmus
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RE: Why No Paint On Wings?

Fri May 21, 2004 5:07 pm

This is the most 'famous' example of painted wings that I could think of.

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It's a pity it wasn't carried over into BA (although I believe a campaign was started).
Understanding is a three-edged sword
 
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HAWK21M
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RE: Why No Paint On Wings?

Fri May 21, 2004 8:44 pm

Apart from the Weight gain with no purpose & secondly Paint has a tendency to peel out with time & airflow.Hydraulic leaks can cause pain peeling too.
regds
HAWK
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Super Em
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RE: Why No Paint On Wings?

Fri May 28, 2004 11:30 am

Quick question. Why is it that on some JAL planes, they paint their reg # over or under the wing?
 
Continental
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RE: Why No Paint On Wings?

Fri May 28, 2004 11:33 am

I've noticed the regs. on wings as well, I think it's to offer different views if you can't see the reg. on the back, it's easier to see. It's not on just JAL planes, I know Swiss have some, and Air Tahiti Nui does as well, there are probably plenty of others...
 
smcmac32msn
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RE: Why No Paint On Wings?

Wed Jun 02, 2004 5:01 am

I've noticed the regs. on wings as well

Most, if not all Mexican planes I've seen have had their regs' on the top and bottom of each wing. As well as on the tail. I was wondering if this was something that the Mexican CAA (Not sure of the exact name) requires of all the Mexican registered aircraft. Any other countries that we know of that do this?
Hey Obama, keep the change! I want my dollar back.
 
FLYtoEGCC
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RE: Why No Paint On Wings?

Wed Jun 02, 2004 5:12 am

Since Florian has since posted that he was talking about the horizontal stabilisers and not the fin and rudder... I'm no expert, but might I suggest that the weight penalty on the horizontal stabilisers is less of a problem than a weight penalty on the wings, since:
  • They are a lot smaller in area;

  • Aircraft are flown more efficiently if the centre of gravity is shifted towards the rear.

  • When I visited the cockpit of a Canada 3000 A330 a few years ago, the First Officer showed me the fuel display on the lower ECAM display and said that they keep the fuel balance trimmed towards the rear because they're more efficient like that. If that's the case, then won't the weight penalty of the paint on the horizontal stabilisers be cancelled out by the fact that centre of gravity is shifted backwards and improves efficiency?

    As I said, this is only a suggestion and I'm not an expert in any way... anyone have any ideas about this?

    Regards
    Ben
    Come fly with me, let's fly, let's fly away...
     
    Arcano
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    RE: Why No Paint On Wings?

    Wed Jun 02, 2004 12:39 pm

    As posted

    Color scheme is mostly a matter of marketing. On a wing, the only people that get to what it would be the passenger: those who already paid for their tkt. Besides, as awareness and brand recognition is also important after the purchase, the cabin is full of branding that remember the consumers the airline they are flying by. So there is no point in using the wings to this task: paint adds weight and costs. There are better ways for marketing the airline during flight. At the airport, nobody actually gets to see the wing.

    One of the wing tail painted that I really like:


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    Continental
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    RE: Why No Paint On Wings?

    Thu Jun 03, 2004 9:02 am

    How about the Mesa Air (America West Express) CRJs??


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    Their wings are covered in paint!
     
    B727-200
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    RE: Why No Paint On Wings?

    Sat Jun 05, 2004 4:42 pm


    Ansett used to paint the wings of their aircraft entirely white. The only exception to this was the B744's. When they had the B743's, it was quite an engineering hastle painting the wings, because no-one had ever painted an entire B747 wing before.

    B727-200.

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