X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao104.cox.net ([68.230.241.42] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2497081 for flyrotary@lancaironline.net; Tue, 20 Nov 2007 01:45:16 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.42; envelope-from=alventures@cox.net Received: from fed1rmimpo03.cox.net ([70.169.32.75]) by fed1rmmtao104.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20071120064435.DPHM14792.fed1rmmtao104.cox.net@fed1rmimpo03.cox.net> for ; Tue, 20 Nov 2007 01:44:35 -0500 Received: from BigAl ([72.192.143.193]) by fed1rmimpo03.cox.net with bizsmtp id Eukb1Y0054AaN600000000; Tue, 20 Nov 2007 01:44:36 -0500 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: Thick vs Thin Date: Mon, 19 Nov 2007 22:45:07 -0800 Message-ID: <000001c82b40$e3ae4750$6401a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C82AFD.D58D5140" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C82AFD.D58D5140 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable We need to define the terms thick & thin I guess. =20 Tracy =20 How about =BE=94 to 1 =BE=94 is thin; 2=94 to 2 3/4=94 is medium and = 3=94 to 7=94 is thick. Aristotle said that virtue is found in the mean between extremes. =20 I have an oil cooler that is 3.3=94, and I consider that as thick. It = also has minimum mass flow of air and high delta T (120-140F). I guess it has = low drag, but the cooling is inadequate. But that was subject of a previous discussion. You can=92t design an adequate scoop if you don=92t know = ahead of time that the airflow is messed up. =20 Al ------=_NextPart_000_0001_01C82AFD.D58D5140 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

We need to define the terms thick & thin = I guess. 

 Tracy

 

How about =BE” to 1 = =BE” is thin; 2” to 2 3/4” is medium and 3” to 7” is = thick.

Aristotle said that virtue is = found in the mean between extremes.

 

I have an oil cooler that is = 3.3”, and I consider that as thick. It also has minimum mass flow of air and = high delta T (120-140F). =A0I guess it has low drag, but the cooling is = inadequate. But that was subject of a previous discussion. You can’t design an = adequate scoop if you don’t know ahead of time that the airflow is messed = up.

 

Al

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