X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [69.171.52.140] (account marv@lancaironline.net) by logan.com (CommuniGate Pro WebUser 4.3c4) with HTTP id 861294 for lml@lancaironline.net; Thu, 07 Apr 2005 23:54:49 -0400 From: "Marvin Kaye" Subject: Re: [LML] Re: Flap rips for 360 To: lml X-Mailer: CommuniGate Pro WebUser Interface v.4.3c4 Date: Thu, 07 Apr 2005 23:54:49 -0400 Message-ID: In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format="flowed" Content-Transfer-Encoding: 8bit Posted for Dan O'Brien : Most of the strength of a sandwich structure comes from the separation of the skins. It doesn't matter much whether the core is foam or honeycomb, as long as it can bear the relatively small shear loads at each point along the rib. I've vowed that if I need any more prepreg for do-dads I want in the interior, I'm going to fabricate my own foam sandwiches. I made up some sample ribs for a presentation on composites I did for my 4th grader's class, and they're strong as can be. Can't break em. I imagine they're a little heavier than pre-preg though.