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shuck
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 Posted: Apr 09, 2009 - 02:38 PM
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Joined: Nov 28, 2003 - 03:10 AM
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| Looking at photos on the internet production F-22's have been rolled-out in all-over brown primer. Then ship 4112 was all-over brown with some green panels, and now ship 4137 is in all-over green primer. What is the reason for the change? |
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shuck
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 Posted: May 24, 2013 - 2:27 AM
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F-16.net Sponsor
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singularity
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Posted: Apr 09, 2009 - 02:48 PM
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Joined: Dec 18, 2008 - 01:06 PM
Posts: 94
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SnakeHandler
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Posted: Apr 09, 2009 - 07:25 PM
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Joined: Jul 01, 2007 - 07:22 PM
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Tinito_16
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Posted: Apr 09, 2009 - 07:28 PM
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Joined: May 31, 2007 - 10:46 PM
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| I'm not sure but I think those are layers. Might be something related to the stealth coatings??? Idk, maybe some areas need more primer/layers of paint than others. |
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"Like the coldest winter chill, heaven beside you...hell within" Alice In Chains
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That_Engine_Guy
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Posted: Apr 09, 2009 - 10:06 PM
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Elite 2K
Joined: Dec 14, 2005 - 05:03 AM
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Location: Under the engine somewhere.
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More likely relates to which panels are bare composites, and which are coated with primer?  |
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[Airplanes are] near perfect, all they lack is the ability to forgive.
— Richard Collins
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cywolf32
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Posted: Apr 10, 2009 - 10:41 AM
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Joined: Nov 21, 2005 - 12:04 PM
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sounds good to me TEG. I would assume that any metal parts would require primer immediately while composites are just brown until the whole acft is primered prior to full paint and coatings. F-35 pics show the same thing. Its nice to have a decent question lately.  |
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shuck
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Posted: Apr 10, 2009 - 04:30 PM
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Joined: Nov 28, 2003 - 03:10 AM
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Sorted ...
The F-22 will be sporting a new green color during test flights. The change from the familiar brown is an upgrade in the primer used for exterior paint. The green primer does not contain the hazardous chromium compounds found in traditional aircraft primers. Further it offers greater corrosion protection with reduced costs compared to the brown. |
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shuck
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Tinito_16
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Posted: Apr 10, 2009 - 08:22 PM
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Joined: May 31, 2007 - 10:46 PM
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Cool  |
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"Like the coldest winter chill, heaven beside you...hell within" Alice In Chains
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arl8733
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Posted: Apr 20, 2009 - 08:52 PM
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Joined: Apr 16, 2009 - 07:05 PM
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| Recall we had a couple with what looked like pink primmer but the pilots didn't want to tly with it. |
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Tinito_16
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Posted: Apr 20, 2009 - 11:31 PM
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Forum Veteran
Joined: May 31, 2007 - 10:46 PM
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| LOL I think I saw some pics of those... very rare though. Was that actually for real? I thought they'd been photoshopped. |
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"Like the coldest winter chill, heaven beside you...hell within" Alice In Chains
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arl8733
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Posted: Apr 21, 2009 - 02:25 AM
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Joined: Apr 16, 2009 - 07:05 PM
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| They were for real. Wasn't the entire jet but both the company and AF pilot were not happy about it. |
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Tinito_16
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Posted: Apr 21, 2009 - 03:22 AM
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Joined: May 31, 2007 - 10:46 PM
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| I would imagine, LMAO |
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"Like the coldest winter chill, heaven beside you...hell within" Alice In Chains
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tomschwerdt
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Posted: Dec 20, 2010 - 02:44 PM
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Joined: Dec 20, 2010 - 02:40 PM
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shuck wrote:
Sorted ...
The F-22 will be sporting a new green color during test flights. The change from the familiar brown is an upgrade in the primer used for exterior paint. The green primer does not contain the hazardous chromium compounds found in traditional aircraft primers. Further it offers greater corrosion protection with reduced costs compared to the brown.
According to the recent GAO report the "upgrade" primer was not thoroughly tested and offered worse corrosion protection than the traditional hexavalent chrome primers. As a footnote, when that report talks about non-chrome, they actually mean non-hexavalent - there are some heavily marketed trivalent chrome primers on the market.
[url][Link pending approval][/url] |
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