Return-Path: Received: from grebe.mail.pas.earthlink.net ([207.217.120.46] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2782297 for flyrotary@lancaironline.net; Wed, 03 Dec 2003 15:57:11 -0500 Received: from h-68-166-182-146.sfldmidn.covad.net ([68.166.182.146] helo=richard) by grebe.mail.pas.earthlink.net with smtp (Exim 3.33 #1) id 1ARe3Z-0006Kn-00 for flyrotary@lancaironline.net; Wed, 03 Dec 2003 12:57:09 -0800 Message-ID: <01a301c3b9e0$22f832d0$6601a8c0@richard> From: "Eric Ruttan" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: EWP pressure or flow Date: Wed, 3 Dec 2003 15:58:00 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Head pressure in a engine will be near 0 ----- Original Message ----- From: To: "Rotary motors in aircraft" Sent: Wednesday, December 03, 2003 3:07 PM Subject: [FlyRotary] Re: EWP pressure or flow > I finally got through to the archives, and found the numbers stated as one EWP producing 45 liters/min and two in series producing ~56 liters/min. But against what head pressure? > > I searched all over Davie-Craig's website. While they quote flowrate all over the place, they never state how much head pressure these pumps will create. I'm still trying to work up feasibility numbers for relocating the rads to the back of the plane, and expect much higher than normal back pressure. Is there a way to calculate out these sort of numbers? > Content-Type: multipart/alternative; > boundary="----=_NextPart_001_0007_01C3B987.EE4CF410" > >