(ATM) Re: atm Composite Fiberglass Tubes

K8DO@aol.com
Thu, 10 Aug 1995 08:43:49 -0400

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A 15 inch tube is identical to the fuselage in an experimental aircraft.. Same requirements: Light/strong/rigid... The pinnacle of this structure is the geodetic method referrred to as a Geo-Spiral.... To do this you need strips of material... Wood/F'glass/etc. You need a form to wind the strips on... i.e. a tube of some sort... Doesn't need to be particularly strong as it is just a workpiece... This form is removed afterwards... You start by winding one strip in a spiral, along the form... Say a right hand spiral to begin with...Then, over top of this you wind a spiral the other direction... We will call this a left hand spiral...Where the strips of the second winding pass across the strips of the first winding, you screw/glue/bolt/whatever them together... Whne you are finished you remove the form and you are left with something that resembles a basket weave tube.... Very strong/rigid/light... Voila... :>)

Denny

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