Received-SPF: softfail
 receiver=logan.com; client-ip=64.102.122.149; envelope-from=echristley@nc.rr.com
Message-ID: <45BF6E64.2090506@nc.rr.com>
Date: Tue, 30 Jan 2007 11:12:20 -0500
From: Ernest Christley <echristley@nc.rr.com>
Reply-To: echristley@nc.rr.com
User-Agent: Mozilla Thunderbird 1.0.7-1.4.1 (X11/20050929)
MIME-Version: 1.0
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] New Cowl Contest
References: <list-1798557@logan.com>
In-Reply-To: <list-1798557@logan.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

David Leonard wrote:

> I call them the "Oh Cowl" and the "Smiley Cowl..."

Go with the smile, but put a raised ledge on the cowl side just behind 
the spinner to accelerate the air and thin the boundary layer.  Reduces 
the ingestion of turbulent air.  Check the CAFE Foundation's drag 
reduction report.  They have a picture of what it looks like on a 
production aircraft.  I have a link to it at home, but not here.

-- 
         ,|"|"|,              Ernest Christley       |
----===<{{(oQo)}}>===----    Dyke Delta Builder      |
        o|  d  |o        http://ernest.isa-geek.org  |