Return-Path: Received: from relay03.roc.ny.frontiernet.net ([66.133.182.166] verified) by logan.com (CommuniGate Pro SMTP 4.3c2) with ESMTP id 769905 for flyrotary@lancaironline.net; Fri, 04 Mar 2005 09:36:38 -0500 Received-SPF: pass receiver=logan.com; client-ip=66.133.182.166; envelope-from=canarder@frontiernet.net Received: from filter09.roc.ny.frontiernet.net (filter09.roc.ny.frontiernet.net [66.133.183.76]) by relay03.roc.ny.frontiernet.net (Postfix) with ESMTP id BF2FA3580FE for ; Fri, 4 Mar 2005 14:35:52 +0000 (UTC) Received: from relay03.roc.ny.frontiernet.net ([66.133.182.166]) by filter09.roc.ny.frontiernet.net (filter09.roc.ny.frontiernet.net [66.133.183.76]) (amavisd-new, port 10024) with LMTP id 30260-20-49 for ; Fri, 4 Mar 2005 14:35:52 +0000 (UTC) Received: from [127.0.0.1] (67-137-89-39.dsl2.cok.tn.frontiernet.net [67.137.89.39]) by relay03.roc.ny.frontiernet.net (Postfix) with ESMTP id 26E46358551 for ; Fri, 4 Mar 2005 14:35:51 +0000 (UTC) Message-ID: <4228723B.7090308@frontiernet.net> Date: Fri, 04 Mar 2005 08:35:39 -0600 From: Jim Sower User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040514 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: EWP Test Results/DRAG References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Antivirus: avast! (VPS 0509-4, 03/03/2005), Outbound message X-Antivirus-Status: Clean X-Virus-Scanned: by amavisd-new-20040701 (2.0) at filter09.roc.ny.frontiernet.net Al Gietzen wrote: > >>> I thought less flow might be partially / substantially compensated >for by greater dT you would achieve from slower flow through the same >radiator. Is this not significant? > >Jim; > >A larger dT = lower average radiator temperature since the high end temp is >limited to about 220F. The result is the need for a larger radiator to do >the same job. > >Al > > >>> I would have thought that slower flow would allow coolant to stay in the radiator longer (with same air flow through the radiator) and give you a larger dT than if you "rushed" it through. At least that's intuitive ... I don't recall how to quantify it (it's been over 40 yrs) ... Jim S. > > > > > >>> Homepage: http://www.flyrotary.com/ >>> Archive: http://lancaironline.net/lists/flyrotary/List.html >>> >>> > > > >