X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mx2.netapp.com ([216.240.18.37] verified) by logan.com (CommuniGate Pro SMTP 5.2.11) with ESMTPS id 3411698 for flyrotary@lancaironline.net; Mon, 05 Jan 2009 13:58:18 -0500 Received-SPF: softfail receiver=logan.com; client-ip=216.240.18.37; envelope-from=echristley@nc.rr.com X-IronPort-AV: E=Sophos;i="4.36,333,1228118400"; d="scan'208";a="108359105" Received: from smtp1.corp.netapp.com ([10.57.156.124]) by mx2-out.netapp.com with ESMTP; 05 Jan 2009 10:57:39 -0800 Received: from [10.62.16.115] (ernestc-thinkcenter-kubuntu64.hq.netapp.com [10.62.16.115]) by smtp1.corp.netapp.com (8.13.1/8.13.1/NTAP-1.6) with ESMTP id n05IvdmF010483 for ; Mon, 5 Jan 2009 10:57:39 -0800 (PST) Message-ID: <49625824.4000705@nc.rr.com> Date: Mon, 05 Jan 2009 13:57:40 -0500 From: Ernest Christley Reply-To: echristley@nc.rr.com User-Agent: Thunderbird 2.0.0.18 (X11/20081125) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: 20B install issues overcome References: In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit wrjjrs@aol.com wrote: > Mark, > Take a look at the newest Mistral pictures. They are using a tangental > with a "cool tube" something that I drew several years ago for PL's > site. They use a large down pipe with a annular exit around the tube. > If you are doing something new it is worth a look. Material is 321 I > think. > Bill Jepson Does anyone else get "Make" magazine? One of the things I want to try is creating a phononic band-gap filter. I'm not sure of all the details, but it I think a tangential entry to an array of 3/8" stainless cool tubes, with a large central rear exit. Do a google search for "phononic band-gap" if you don't know what that is.