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aileron hinge flange BID size

Subject: aileron hinge flange BID size
From: Rowland & Wilma Carson <rowil@clara.net>
Date: Wed, 1 Jan 2003 19:55:04
I've had a look in the archives and the H&T and can't find anyone 
else mentioning this particular problem, so maybe I am being stupid 
somehow! (No doubt someone will tell me if that is the case ....)

I am shortly about to do the aileron hinge flange layups. For each 
aileron, my manual calls for 2 pieces of of BID (cut at 45 degrees as 
usual) "full length" by 100m wide. The full length of my aileron is 
about 1540mm, but the longest piece of BID 100mm wide I can cut from 
a 1-metre width at 45 degress is about 1315mm.

Do I cut it somewhat wider than 100mm and stretch until it is the 
right length (hoping it hasn't got too narrow by then)?

Do I make it in 2 pieces, with a small (what length?) overlap overlap 
at the joint?

I'm inclined to cut pieces 900 long and 640 + overlap (say 670 for a 
30mm overlap, which feels good to me). The longer pieces would be 
used at opposite ends on the first and last layers, so that the 
joints are not on top of each other but are not so far off-centre as 
to interfere with the hinge area and cause extra thickness there.

Any thoughts would be welcome - including the official factory line 
on this! I have the second aileron to fettle up ready for the layup, 
so hope to have answers by the time I've got that ready.

regards

Rowland

| Wilma & Rowland Carson <http://home.clara.net/rowil/>
| <rowil@clara.net>          ... that's Rowland with a 'w' ...


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