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Attaching plexiglas windshield to composite fuselage
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Source：Internet Author：Unknow Pubdate：2008-04-03
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Mgundwane (Aeronautics)
7 Nov 03 10:56
Dear ladies and gentlemen
Could somebody out there give me some details on how to actually fix (bond and clamp or just bond) a 5mm thick plexiglass windshield (simmilar shape and size as the EC135 windshields) to a composite fuselage structure of a two bladed helicopter.
1. What needs to be considered in terms of possible fuselage oscilations and the effect on the bonding/sealer?
2. Would a mechanical clamping in addition to a 5mm thick flexible sealer/bonding layer be of any advantage?
How do the professional manufacturers do it?
Thank you in advance.
Thys Pieterse
gyromaxwell (Aeronautics)
17 Nov 03 7:52
The method that I have seen used many times is as follows:
a rubber grommet of a given dia. is used in a hole that is larger then the fastening screw. the grommet thickness is greater then the windshield thickness and/or over-laps the windshield. the screw is then passed thru the windshield hole and thru the composite hole. a nylock nut is then placed on the screw. using flathead screws keeps the outer surface smooth. 字串8
Hope this helps!
Tim Blackwell
Gyro-designer
aviat (Aerospace)
18 Nov 03 21:36
You can try this site and then contact them for more info it necessary.
http://members.eaa.org/home/homebuilders/authors/bingel...
（Click：）
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