fiberglass mesh in foam wings

[Rcmaster199 at aol.com]

Carbon Fiber mat or veil, in substantial weight rating, will absorb a great  
deal of glue. The only reasonable way to do a carbon veiled wing is as Jerry  
suggests, to roll out practically all the glue and vacuum bag it. 
 
Be that as it may, in my experience it is an unecessary weight addition.  
Sure it adds stiffness but for what purpose? These models are not jets or racers  
that need to be strong at 200+mph. A little more flexibility in the wing is  
not a bad thing for pattern models. The trick is knowing when the nice  
balance in properties has been reached.  
 
MattK
 
 
In a message dated 12/21/2004 3:48:58 PM Eastern Standard Time,  
Richard.Fletcher at gs.com writes:

The  most expensive solution in this case I believe is the best. CF mesh from 
 Aerospace Composites.
 
 
Thanks, Rich 


-----Original Message-----
From:  discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On  
Behalf Of John Ferrell
Sent: Tuesday, December 21, 2004 3:35  PM
To: discussion at nsrca.org
Subject: Re: fiberglass mesh  in foam wings


Sounds good to me. There are a lot of ways that  work well.
BTW, some of the drywall mesh is made with very  short fibers: if you can 
tear it easily, don't use it.
Pattern flyers will prefer the most expensive  solution. I think that is a 
paraphrase of something Dick Hanson  said...
 
John Ferrell    
_http://DixieNC.US_ (http://dixienc.us/) 


----- Original Message ----- 
From:  _Jerry Stebbins_ (mailto:JAStebbins at worldnet.att.net)  
To: _discussion at nsrca.org_ (mailto:discussion at nsrca.org)  
Sent: Tuesday, December 21, 2004  12:37 PM
Subject: Re: fiberglass mesh in foam  wings


John, we put 0.5 oz carbon mat between the  foam and sheeting, same amount of 
slow epoxy ( really thin rolled on to  the mat ), with a little brushed 
around the edges of the  foam, and bag them. Gives an incredibly strong wing,almost 
 monocaque, with little added weight. Also add a small piece at fuse  end TE 
to prevent the "pick up bends" .
Jerry





 
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