X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail843.megamailservers.com ([69.49.106.53] verified) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTPS id 1029877 for flyrotary@lancaironline.net; Fri, 10 Mar 2006 16:26:19 -0500 Received-SPF: none receiver=logan.com; client-ip=69.49.106.53; envelope-from=MadScientist@covad.net X-POP-User: madscientist.covad.net Received: from [67.101.98.110] (h-67-101-98-110.snfccasy.dynamic.covad.net [67.101.98.110]) by mail843.megamailservers.com (8.13.1/8.13.1) with ESMTP id k2ALPMt1002945 for ; Fri, 10 Mar 2006 16:25:23 -0500 Message-ID: <4411EEC0.7010007@covad.net> Date: Fri, 10 Mar 2006 13:25:20 -0800 From: James User-Agent: Mozilla Thunderbird 1.0 (X11/20050203) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: NACA's, Cooling and Sport Aviation Mag.. References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Ernest, I did not see that specific paper. Do you know an easy to find it? Thanks. Regards; James Freeman Ernest Christley wrote: > James wrote: > >> Second point: I believe that a reversed direction NACA scoop would >> make an excellent low drag exit port for the cooling air stream. >> If anyone tries it, please let us know your findings. > > > According to the article, NACA tried it. It didn't work very well. A > straight sided 'boxy' exit works much better. >