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Boeing 787 - Extended Parking In The Sun  
User currently offlineqslinger From India, joined Apr 2006, 261 posts, RR: 0
Posted (1 year 3 days 18 hours ago) and read 6085 times:

Hi All:

When 787's are parked at Everette, I notice that the windows are covered by black cover. Correct me if I am wrong, but I guess they do this to keep the sunlight out and to keep it from bleaching the seats or interior etc

My question is, what does the operator do when the 787 is parked outside for a few days in the hot sun with no external power attached. Will the window dimmer still work without power? How will they keep the sun out in those cases without having to black cover the window's all over again.

Apologies if this topic has been covered.


Raj Koona
9 replies: All unread, jump to last
 
User currently offlinebaldwin471 From UK - England, joined Mar 2012, 296 posts, RR: 0
Reply 1, posted (1 year 3 days 12 hours ago) and read 5895 times:

May be something to do with the electro-chromatic windows? Pure guess work here though.

User currently offlineKELPkid From United States of America, joined Nov 2005, 6381 posts, RR: 3
Reply 2, posted (1 year 3 days 7 hours ago) and read 5734 times:

It is not unusual at all for aircraft under storage to have the windows covered. Plexiglas is quite sensitive to the sun, and prolonged exposure to the sun can lead to the the windows starting to haze and crack. I'm sure Boeing does not want to have to replace the outer pane of the cabin windows when they pull aircraft out of storage  

In service, the aircraft windows are regularly cleaned and polished, which prevents the problem.



Celebrating the birth of KELPkidJR on August 5, 2009 :-)
User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 3, posted (1 year 2 days 9 hours ago) and read 5275 times:

Quoting qslinger (Thread starter):
I notice that the windows are covered by black cover

Is this cover on from the inside or is it the dimmer selected on.



Think of the brighter side!
User currently offlineduncan16 From United States of America, joined Apr 2012, 19 posts, RR: 0
Reply 4, posted (1 year 1 day 4 hours ago) and read 4880 times:

My understanding is that the dimmable windows use a technology called electrochromatic. These dimmable windows go to a clear state when there is no power. They cannot select that the windows be darkened. So, a maximum amount of heat is transmitted inboard when parked on the ramp. This must be why the black covers are needed.

User currently offlineKarelXWB From Netherlands, joined Jul 2012, 11623 posts, RR: 33
Reply 5, posted (1 year 10 hours ago) and read 4618 times:

Not just the windows, they seal off every hole:


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Only two things are infinite, the universe and human stupidity. And I'm not sure about the universe.
User currently offlinePygmalion From United States of America, joined Jun 2006, 966 posts, RR: 37
Reply 6, posted (12 months 3 hours ago) and read 3670 times:

the dimmable windows arent installed until after the interior goes in. The airplanes in storage dont have interiors.. Interiors install only takes a couple weeks. The dimmable portion of the window is a separate portion from the structural pressure portion that is seen on the outside.

the exterior window panes are covered just to prevent dirt and grit from sitting on the pane and degrading the optical quality over a medium storage period. Covering has nothing to do with the CFRP or UV.


User currently offlineKarelXWB From Netherlands, joined Jul 2012, 11623 posts, RR: 33
Reply 7, posted (11 months 4 weeks 1 day 15 hours ago) and read 3543 times:

Quoting Pygmalion (Reply 6):
The airplanes in storage dont have interiors..

You sure about that? I read the first batch had interiors, the original idea was to deliver them directly after certification.



Only two things are infinite, the universe and human stupidity. And I'm not sure about the universe.
User currently offlinebikerthai From United States of America, joined Apr 2010, 2125 posts, RR: 4
Reply 8, posted (11 months 4 weeks 1 day 12 hours ago) and read 3493 times:

Quoting Pygmalion (Reply 6):
the dimmable windows arent installed until after the interior goes in.

I thought the "dimmable" function is integrated in the window itself. The only thing that is on the sidewall are the individual switches. Even without the switch, the windows can be controlled by the attendant panel.


bt



Intelligent seeks knowledge. Enlightened seeks wisdom.
User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 9, posted (11 months 4 weeks 7 hours ago) and read 3316 times:

Quoting KarelXWB (Reply 5):
Not just the windows, they seal off every hole:

Under Line Mx parking too.....Are you sure?.



Think of the brighter side!
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