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1" Thick Piece Of Glass From A 707, 747?  
User currently offlineFlapsAndSlats From United States of America, joined Jan 2008, 2 posts, RR: 0
Posted (6 years 7 months 3 weeks 4 days 4 hours ago) and read 3517 times:

I'd like to know if this piece of glass a friend brought me could have been on the navigation lighting system of an airliner. It's clear and about 1" thick. It's just a broken piece but has the right curves and all indicating that the total part could be the right size. Are these glasses really that thick? I thought these would always be polycarbonate!

10 replies: All unread, jump to last
 
User currently offlineA342 From Germany, joined Jul 2005, 4682 posts, RR: 3
Reply 1, posted (6 years 7 months 3 weeks 4 days 3 hours ago) and read 3495 times:

I think a photo would be helpful.


Exceptions confirm the rule.
User currently offlineFr8mech From United States of America, joined Sep 2005, 5452 posts, RR: 14
Reply 2, posted (6 years 7 months 3 weeks 4 days 3 hours ago) and read 3482 times:

Nav light lens...1" thick? No. Nav light lenses, depending on material, run around the 1/8" to 1/4" thick range. Glass on the older aircraft, plastic on newer ones.

[Edited 2008-02-01 13:48:31]


When seconds count...the police are minutes away.
User currently offlineCosmicCruiser From United States of America, joined Feb 2005, 2255 posts, RR: 15
Reply 3, posted (6 years 7 months 3 weeks 4 days 3 hours ago) and read 3480 times:

sounds like a piece of a glass insulator on a power line.

User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 4, posted (6 years 7 months 3 weeks 3 days 15 hours ago) and read 3370 times:

Is this a piece of the windshield.
Any pic.
regds
MEL



Think of the brighter side!
User currently offlineFlyASAGuy2005 From United States of America, joined exactly 7 years ago today! , 7004 posts, RR: 11
Reply 5, posted (6 years 7 months 3 weeks 3 days 9 hours ago) and read 3309 times:

A pic would be very helpful  Smile


What gets measured gets done.
User currently offline474218 From United States of America, joined Oct 2005, 6340 posts, RR: 9
Reply 6, posted (6 years 7 months 3 weeks 3 days 9 hours ago) and read 3297 times:



Quoting HAWK21M (Reply 4):
Is this a piece of the windshield.

Windshields are made of acrylic plastic with a thin (0.050 to 0.080 inch) glass over lay on the outer surface.


User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 7, posted (6 years 7 months 3 weeks 3 days 8 hours ago) and read 3278 times:



Quoting 474218 (Reply 6):

with no pic its all guess work  Smile
regds
MEL



Think of the brighter side!
User currently offlineFlapsAndSlats From United States of America, joined Jan 2008, 2 posts, RR: 0
Reply 8, posted (6 years 7 months 3 weeks 3 days 7 hours ago) and read 3271 times:

I'll get the pic and post it!
Thank you guys!


User currently offline411A From United States of America, joined Nov 2001, 1826 posts, RR: 8
Reply 9, posted (6 years 7 months 2 weeks ago) and read 2933 times:



Quoting 474218 (Reply 6):
Windshields are made of acrylic plastic with a thin (0.050 to 0.080 inch) glass over lay on the outer surface.

While this is true of new(er) aircraft, older aircraft, the Boeing 707 specifically, used several layers of glass and acrylic 'sandwich' with glass on both outer layers.
This was called NESA, and was also used on piston engine and many older turbopropeller types as well.


User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 10, posted (6 years 7 months 1 week 6 days 16 hours ago) and read 2872 times:

Any pics yet?
regds
MEL.



Think of the brighter side!
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