X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from sj-iport-6.cisco.com ([171.71.176.117] verified) by logan.com (CommuniGate Pro SMTP 5.1.12) with ESMTP id 2392222 for flyrotary@lancaironline.net; Wed, 17 Oct 2007 15:49:44 -0400 Received-SPF: softfail receiver=logan.com; client-ip=171.71.176.117; envelope-from=echristley@nc.rr.com X-IronPort-AV: E=Sophos;i="4.21,290,1188802800"; d="scan'208";a="238752900" Received: from sj-dkim-4.cisco.com ([171.71.179.196]) by sj-iport-6.cisco.com with ESMTP; 17 Oct 2007 12:49:05 -0700 Received: from sj-core-5.cisco.com (sj-core-5.cisco.com [171.71.177.238]) by sj-dkim-4.cisco.com (8.12.11/8.12.11) with ESMTP id l9HJn5dq023016 for ; Wed, 17 Oct 2007 12:49:05 -0700 Received: from xbh-rtp-201.amer.cisco.com (xbh-rtp-201.cisco.com [64.102.31.12]) by sj-core-5.cisco.com (8.12.10/8.12.6) with ESMTP id l9HJmvsl000447 for ; Wed, 17 Oct 2007 19:49:05 GMT Received: from xfe-rtp-202.amer.cisco.com ([64.102.31.21]) by xbh-rtp-201.amer.cisco.com with Microsoft SMTPSVC(6.0.3790.1830); Wed, 17 Oct 2007 15:49:05 -0400 Received: from [10.82.233.83] ([10.82.233.83]) by xfe-rtp-202.amer.cisco.com with Microsoft SMTPSVC(6.0.3790.1830); Wed, 17 Oct 2007 15:49:04 -0400 Message-ID: <47166730.9090406@nc.rr.com> Date: Wed, 17 Oct 2007 15:49:04 -0400 From: Ernest Christley Reply-To: echristley@nc.rr.com User-Agent: Thunderbird 1.5.0.13 (X11/20070824) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: BellMouth Article References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 17 Oct 2007 19:49:04.0783 (UTC) FILETIME=[C5DFB1F0:01C810F6] X-TM-AS-Product-Ver: SMEX-8.0.0.1181-5.000.1023-15488.002 X-TM-AS-Result: No--6.925900-8.000000-2 X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No Authentication-Results: sj-dkim-4; header.From=echristley@nc.rr.com; dkim=neutral Dale Rogers wrote: > In our application, there is less attenuation, but a 1.5 hp increase - > for just changing a contour in the inlet - is almost "free" power.. > I especially liked how the author characterized the different contours. Just any ol' radius will get you most of the payback, but there are slight incremental improvements to be had with more manufacturing effort. He makes it very easy to decide how much work you're willing to invest.