X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao105.cox.net ([68.230.241.41] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2464236 for flyrotary@lancaironline.net; Fri, 09 Nov 2007 19:47:08 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.41; envelope-from=alventures@cox.net Received: from fed1rmimpo03.cox.net ([70.169.32.75]) by fed1rmmtao105.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20071110004626.TWKI26022.fed1rmmtao105.cox.net@fed1rmimpo03.cox.net> for ; Fri, 9 Nov 2007 19:46:26 -0500 Received: from BigAl ([72.192.143.193]) by fed1rmimpo03.cox.net with bizsmtp id AomS1Y0074AaN600000000; Fri, 09 Nov 2007 19:46:26 -0500 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Total,duct, Ambient or Velocity???? Date: Fri, 9 Nov 2007 16:46:35 -0800 Message-ID: <000601c82333$25805210$6401a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0007_01C822F0.175D1210" 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_0007_01C822F0.175D1210 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit One thing I would really love to know is - at what point in the inlet duct does the dynamic flow change to static pressure. I would assume this would vary with different shaped ducts and different dynamic flow ( airflow speed). Your opinions on this or guesstimates ie 1", 2" or 3" from the face of the rad, would be of great interest to me. George (down under It doesn't happen at a 'point'. The static pressure builds as the velocity is reduced. Al ------=_NextPart_000_0007_01C822F0.175D1210 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

One thing I would really = love to know is - at what point in the inlet duct does the dynamic flow change = to static pressure. I would assume this would vary with different shaped = ducts and different dynamic flow ( airflow speed). 

Your opinions on this or guesstimates ie 1", 2" or 3" from the face = of the rad, would be of great interest to me.

 

George (down = under

 

It doesn’t happen at a = ‘point’.  The static pressure builds as the velocity is reduced.

 

Al

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