[RocketsNW] Silk Lay-Ups

[greg at blastzone.com]

So whats the upside here?  Is silk less expensive than fiberglass or other
composites?  Better in some way?  Or is this just a desire to try something
different for fun?


On Mon, 1 Feb 2010 11:16:45 -0800, "CAMERON Kenneth A"
<CAMERON.Kenneth at deq.state.or.us> wrote:
> Greetings
> While not directly tied to rocketry, I can attest to the fact that silk
> can increase resistance to flexing in some instances.  As a traditional
> archer who teaches folks how to make wooden longbows and flatbows, I've
> used silk as backing on an English longbow and it increased the pull
> weight (i.e. stiffness) from 55 pounds to 75 pounds.  This was with two
> layers of raw silk cloth attached with carpenters glue.  I also know
> that multi-layer varnished silk was used as light armor (though I prefer
> chain mail, I teach classes in that, too).  Imagine the look on the
> clerk's face at the fabric store when you ask if she knows how well silk
> stands up to speeds above mach one.
> Ken Cameron
> Brewer to the Gods of Valhalla (at least that's who the said they were)
> 
> -----Original Message-----
> From: rockets-bounces at rocketsnw.com
> [mailto:rockets-bounces at rocketsnw.com] On Behalf Of Bill Munds
> Sent: Monday, February 01, 2010 10:53 AM
> To: vonrang at yahoo.com; Dave Randall; rockets at rocketsnw.com
> Subject: Re: [RocketsNW] Silk Lay-Ups
> 
> 
> Sam,
> 
> Why not test it?  Newspaper and white glue work pretty well structurally
> (Jr. High science project).
> 
> I would think that silk being pretty strong by itself would work if in
> multiple layers in different directions.
> 
>  
> 
> Hmmm.......
> 
> 
> 
> 
> 
>  
>> Date: Mon, 1 Feb 2010 07:33:48 -0800
>> From: vonrang at yahoo.com
>> To: dmrandall at gmail.com; rockets at rocketsnw.com
>> Subject: Re: [RocketsNW] Silk Lay-Ups
>> 
>> Yes, silk fabric for axial flexture and sheer strength.
>> 
>> 
>> Sam Grado
>> TRA L2
>> 
>> "If you're going to build it, build it from scratch"!
>> 
>> sales at pvconly.com
>> http://www.pvconly.com
>> http://www.sugarshot.org/bios/sgrado.html
>> http://groups.google.com/group/PVC-Motor-Rockets
>> 
>> --- On Mon, 2/1/10, Dave Randall <dmrandall at gmail.com> wrote:
>> 
>> 
>> From: Dave Randall <dmrandall at gmail.com>
>> Subject: Re: [RocketsNW] Silk Lay-Ups
>> To: "Sam Grado" <vonrang at yahoo.com>
>> Date: Monday, February 1, 2010, 8:40 AM
>> 
>> 
>> Sam,
>> 
>> I've embedded different cloths in a couple of rockets for decorative
>> purposes (not strength)... Is that what you're asking about, or is it
>> for strength?
>> 
>> Dave
>> 
>> On Mon, Feb 1, 2010 at 4:56 AM, Sam Grado <vonrang at yahoo.com> wrote:
>> > Has anyone here worked with silk cloth for airframe lay-ups?
>> >
>> > Sam Grado
>> > TRA L2
>> >
>> > "If you're going to build it, build it from scratch"!
>> >
>> > sales at pvconly.com
>> > http://www.pvconly.com
>> > http://www.sugarshot.org/bios/sgrado.html
>> > http://groups.google.com/group/PVC-Motor-Rockets
>> >
>> >
>> >
>> > _______________________________________________
>> > Rockets mailing list
>> > Rockets at rocketsnw.com
>> > http://mx1.blastzone.com/mailman/listinfo/rockets
>> >
>> >
>> 
>> 
>> 
>> -- 
>> - Dave
>> 
>> 
>> 
>> 
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