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Platystemon
Feb 13, 2012

BREADS
Isn’t white paint also thinner, or is the colour irrelevant, it’s just that Boeing won’t bother with other colours and warns against adding a second layer?

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CarForumPoster
Jun 26, 2013

⚡POWER⚡

Platystemon posted:

Isn’t white paint also thinner, or is the colour irrelevant, it’s just that Boeing won’t bother with other colours and warns against adding a second layer?

Paint on planes has a spec'd thickness regardless of color. Too thick fucks the panel during a lightning strike, too thin and you get incomplete coverage/corrosion issues. Given the method of applying paint (by Joe-Bob and his paint gun) its a surprisingly controlled tolerance.

HookedOnChthonics
Dec 5, 2015

Profoundly dull


Platystemon posted:

Isn’t white paint also thinner, or is the colour irrelevant, it’s just that Boeing won’t bother with other colours and warns against adding a second layer?


The number of supremely tarted-up 737s hanging around the north ramp of KBFI at any given moment would indicate to me this is not the case.

SeaborneClink
Aug 27, 2010

MAWP... MAWP!

HookedOnChthonics posted:

The number of supremely tarted-up 737s hanging around the north ramp of KBFI at any given moment would indicate to me this is not the case.

I think he was probably referring to GE's insistence that the GENx chevrons could only be painted white or blue because of composite delamination.

MrChips
Jun 10, 2005

FLIGHT SAFETY TIP: Fatties out first

SeaborneClink posted:

I think he was probably referring to GE's insistence that the GENx chevrons could only be painted white or blue because of composite delamination.

It was actually to promote better laminar flow over the nacelle; apparently thicker paint would mess with it. GE/Boeing also backed off that demand not long after they made it.

shame on an IGA
Apr 8, 2005

I don't understand why Boeing can't just publish the relevant Rz spec and wash their hands of the issue

rscott
Dec 10, 2009

shame on an IGA posted:

I don't understand why Boeing can't just publish the relevant Rz spec and wash their hands of the issue

It'd be a BAC spec though that copies whatever other spec

Comrade Gorbash
Jul 12, 2011

My paper soldiers form a wall, five paces thick and twice as tall.

CarForumPoster posted:

There's a bunch of reasons to paint planes white. Crack inspection\finding hydraulic leaks is a breeze, doesnt fade, needs less repainting when sold, absorbs less heat and prob others.
There's also an economic factor. Every time a big fleet operator picks a color scheme that's predominantly white, it makes it more likely others will follow. It becomes the color most likely to be in stock already, and the color with the biggest production capacity. You can get whatever color you want in several months for more... or you can get white plus a trim color right now, for less. Of course, for most paints white is the base color anyways, so its inherently cheaper even without economics of scale.

Sagebrush
Feb 26, 2012

Boeing should make a special edition 787 that's not painted at all -- just a clearcoat over the composite.

SeaborneClink
Aug 27, 2010

MAWP... MAWP!

Sagebrush posted:

Boeing should make a special edition 787 that's not painted at all -- just a clearcoat over the composite.

I'd be willing to bet they can't due to UV degradation of the fibers :smith:

CarForumPoster
Jun 26, 2013

⚡POWER⚡

Sagebrush posted:

Boeing should make a special edition 787 that's not painted at all -- just a clearcoat over the composite.

*makes maiden flight in light rain*

*is permanently grounded after lightning strike*

marumaru
May 20, 2013



slidebite posted:

I think it looks OK.



airbus really makes the prettiest planes

Nostalgia4Infinity
Feb 27, 2007

10,000 YEARS WASN'T ENOUGH LURKING

Inacio posted:

airbus really makes the prettiest planes

MODS?!

beep-beep car is go
Apr 11, 2005

I can just eyeball this, right?



Inacio posted:

airbus really makes the prettiest planes

Counterpoint: A380.

Finger Prince
Jan 5, 2007


Sagebrush posted:

Boeing should make a special edition 787 that's not painted at all -- just a clearcoat over the composite.

They're fully painted default white before they ever see daylight. The parts arrive at the factory pre painted.

rscott
Dec 10, 2009

Finger Prince posted:

They're fully painted default white before they ever see daylight. The parts arrive at the factory pre painted.

I have to record down to the minute how much exposure time any composite part has to UV light while I'm inspecting it, the same for all the milling operations performed up until they get primed

ArcMage
Sep 14, 2007

What is this thread?

Ramrod XTreme

slidebite posted:

I think it looks OK.



I think it looks Space Shuttle.

Safety Dance
Sep 10, 2007

Five degrees to starboard!

Inacio posted:

airbus really makes the prettiest planes

It's like the minivan of the skies.

Sagebrush
Feb 26, 2012

Finger Prince posted:

They're fully painted default white before they ever see daylight. The parts arrive at the factory pre painted.



:confused:

Midjack
Dec 24, 2007




Yeah, it's white like he said.

CarForumPoster
Jun 26, 2013

⚡POWER⚡

As Sagebrush points out they definitely don't arrive with finished paint, it'd never make it through the line without damage. Also, I would expect they need to install fasteners that they also electrically bond through as I doubt they add wire ground straps to skin panels.

See:
https://www.youtube.com/watch?v=c26y2-j5KrY&t=2263s

Sagebrush
Feb 26, 2012

Trump shows interest in privatizing air traffic control

:shepicide:

BIG HEADLINE
Jun 13, 2006

"Stand back, Ottawan ruffian, or face my lumens!"

"Southwest 226, continue holding at the outer marker."

"You motherfucker...we only have fifteen minutes of fuel left!"

"Not my problem, 226 - your airline's low fares mean you can't afford our 'Fast Lane' processing. United 892, cleared to land with our compliments to your CEO."

bennyfactor
Nov 21, 2008

beep-beep car is go posted:

Counterpoint: A380.

simplefish
Mar 28, 2011

So long, and thanks for all the fish gallbladdΣrs!


I wish so hard that were real

hobbesmaster
Jan 28, 2008


FAA management is so bad the air traffic controllers union is in favor of this.

Spaced God
Feb 8, 2014

All torment, trouble, wonder and amazement
Inhabits here: some heavenly power guide us
Out of this fearful country!



BIG HEADLINE posted:

"Southwest 226, continue holding at the outer marker."

"You motherfucker...we only have fifteen minutes of fuel left!"

"Not my problem, 226 - your airline's low fares mean you can't afford our 'Fast Lane' processing. United 892, cleared to land with our compliments to your CEO."

Nah, if they were bingo fuel ATC would Fast Lane™ them, but impound the airplane and passengers until they could pay their overage fee (15x Fast Lane™ fee). It's all in the ToS, you see.

ApathyGifted
Aug 30, 2004
Tomorrow?

Finger Prince posted:

They're fully painted default white before they ever see daylight. The parts arrive at the factory pre painted.

No, they're not.

However, the carbon is not on the outer surface of carbon aircraft skins. There's a layer of copper mesh or foil for lightning strike protection, and a layer of fiberglass for corrosion protection and a suitable painting surface that makes up the final outer layer.

The inside surface is also mostly covered in fiberglass in order to avoid having to use fay sealing for metal brackets.

There's plenty of pictures on the internet of unpainted A350's and 787's being towed between hangars (usually on their way to the paint hangar), and they're all that same weird brown you get from the reddish-brown of the copper being just slightly visible through the off-white fiberglass ply.

There ARE carbon parts that don't have copper or glass plies, but they're all in locations that are never exposed to sunlight once installed, and most remain unpainted. The frames and the clips holding them to the skin, for example, which are completely covered by the outside skin and the interior paneling.

Source: I literally wrote the plans for manufacturing skins for one of them, AND I handled the deliveries to the OEM, notably unpainted when we shipped it.

HookedOnChthonics
Dec 5, 2015

Profoundly dull


Speaking of paint jobs though:



:can::krakken::can:SKREEEEEEEE

Finger Prince
Jan 5, 2007


Counterpoint, I've seen them being put together, and clambered around inside and outside them at various states of being put together, and have been to the production line on multiple occasions. But don't just take my word for it; http://bfy.tw/A0Uo

Also before they went down the line like that, they towed them across to the paint hangar at night to paint them white, so technically they were painted white before ever seeing daylight. In one of those images there's even an Air Canada fin with a white fuselage. They all have a white basecoat before going across the road for final customer paint.

Finger Prince
Jan 5, 2007


HookedOnChthonics posted:

Speaking of paint jobs though:



:can::krakken::can:SKREEEEEEEE

The gently caress is that supposed to be? Other than loving awesome. Some kind of cicada-copter with a mouth?

simplefish
Mar 28, 2011

So long, and thanks for all the fish gallbladdΣrs!


Finger Prince posted:

The gently caress is that supposed to be? Other than loving awesome. Some kind of cicada-copter with a mouth?

MARINES we are LEAVING

HookedOnChthonics
Dec 5, 2015

Profoundly dull





I bet they make it talk by wiggling the gun up and down :kimchi:

Groda
Mar 17, 2005

Hair Elf

HookedOnChthonics posted:




I bet they make it talk by wiggling the gun up and down :kimchi:

Saw this in Linköping last summer, and they must have spent two hours doing ground tests.

Humphreys
Jan 26, 2013

We conceived a way to use my mother as a porn mule


Comrade Gorbash posted:

There's also an economic factor. Every time a big fleet operator picks a color scheme that's predominantly white, it makes it more likely others will follow. It becomes the color most likely to be in stock already, and the color with the biggest production capacity. You can get whatever color you want in several months for more... or you can get white plus a trim color right now, for less. Of course, for most paints white is the base color anyways, so its inherently cheaper even without economics of scale.

This makes sense.

Also I vaguely remember a Star Wars Expanded Universe book where some dude ends up with a Star Destroyer and wanted to paint it red and it cost quite the sum of money to even find enough of the paint.

Humphreys fucked around with this message at 10:46 on Feb 10, 2017

Carth Dookie
Jan 28, 2013

hobbesmaster posted:

FAA management is so bad the air traffic controllers union is in favor of this.


Wait a minute. Are they in favor of it as in "Canada's pseudo privatized system seems to be working maybe we should try that" or "HELL YAH FULL CAPITALISM BITCH" in favor of it?

evil_bunnY
Apr 2, 2003

They probably want the former, unaware that the latter is what they'll get. KInda what happened to poor trump voters.

The Ferret King
Nov 23, 2003

cluck cluck
The union supports discussion of a non profit private corporation like Canada's. I don't think that anyone is confused about how it COULD go down, but the union wants to stay involved in any changes instead of impotently opposing something the government can unilaterally impose anyway.

NATCA President Paul Rinaldi's article in ATCA Journal (p. 21) http://www.natca.org/images/Newsroom/FAAReauth/ATCAJournalQ22015.pdf

Another, newer piece from Paul: http://www.natca.org/images/NATCA_PDFs/Current_Legislative_Issues/ATMmag2016reform.pdf

See https://www.natca.org for more information on our union, and the horrible outlook of staffing and funding of the U.S. ATC system.

The Ferret King fucked around with this message at 15:37 on Feb 10, 2017

rscott
Dec 10, 2009

ApathyGifted posted:

No, they're not.

However, the carbon is not on the outer surface of carbon aircraft skins. There's a layer of copper mesh or foil for lightning strike protection, and a layer of fiberglass for corrosion protection and a suitable painting surface that makes up the final outer layer.

The inside surface is also mostly covered in fiberglass in order to avoid having to use fay sealing for metal brackets.

There's plenty of pictures on the internet of unpainted A350's and 787's being towed between hangars (usually on their way to the paint hangar), and they're all that same weird brown you get from the reddish-brown of the copper being just slightly visible through the off-white fiberglass ply.

There ARE carbon parts that don't have copper or glass plies, but they're all in locations that are never exposed to sunlight once installed, and most remain unpainted. The frames and the clips holding them to the skin, for example, which are completely covered by the outside skin and the interior paneling.

Source: I literally wrote the plans for manufacturing skins for one of them, AND I handled the deliveries to the OEM, notably unpainted when we shipped it.

Can confirm this for the 787 frames, whether or not the clips are painted seems up to the vagaries of the engineer designing the assembly though judging by the number of part rolls I get that have no changes to engineering except adding or removing paint from them

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Humphreys
Jan 26, 2013

We conceived a way to use my mother as a porn mule


HookedOnChthonics posted:




I bet they make it talk by wiggling the gun up and down :kimchi:

Looks like the A10 Thunderbolt painters need to up their game.

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