X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf20aec.mail.bellsouth.net ([205.152.59.68] verified) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 1033197 for flyrotary@lancaironline.net; Mon, 13 Mar 2006 21:17:47 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.68; envelope-from=ceengland@bellsouth.net Received: from ibm64aec.bellsouth.net ([209.214.146.29]) by imf20aec.mail.bellsouth.net with ESMTP id <20060314021700.VAZK1944.imf20aec.mail.bellsouth.net@ibm64aec.bellsouth.net> for ; Mon, 13 Mar 2006 21:17:00 -0500 Received: from [127.0.0.1] (really [209.214.146.29]) by ibm64aec.bellsouth.net with ESMTP id <20060314021659.XIQZ16917.ibm64aec.bellsouth.net@[127.0.0.1]> for ; Mon, 13 Mar 2006 21:16:59 -0500 Message-ID: <4416279A.7010807@bellsouth.net> Date: Mon, 13 Mar 2006 20:16:58 -0600 From: Charlie England User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: NACA cooling additional thoughts References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Ernest Christley wrote: > M Roberts wrote: > >> Now if you can tell me where on a typical single engine airplane you >> can place a pitot type inlet with a proper diffuser leading to a >> vertical radiator and then have a perfect exit duct without making a >> mess on the wing or the front of the airplane, I would agree that it >> would be the ideal setup. > > > I was with you up until "perfect exit duct". What I have planned for > an exit duct is probably best described as a 3-dimensional mess. But > I think have the a nice forward end. See the attached as a rough, > undimensioned sketch, except that the largest radiator that will stand > upright in this position will be 9x13. Any suggestions for proper > dimensioning? The vertical exit plume will be pretty high drag.