X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 04 Apr 2013 08:00:10 -0400 Message-ID: X-Original-Return-Path: Received: from mail-pb0-f46.google.com ([209.85.160.46] verified) by logan.com (CommuniGate Pro SMTP 6.0.4) with ESMTPS id 6179205 for lml@lancaironline.net; Wed, 03 Apr 2013 20:03:23 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.160.46; envelope-from=pjdmiller@gmail.com Received: by mail-pb0-f46.google.com with SMTP id rp8so1117394pbb.5 for ; Wed, 03 Apr 2013 17:02:47 -0700 (PDT) X-Received: by 10.66.227.104 with SMTP id rz8mr6497687pac.85.1365033767147; Wed, 03 Apr 2013 17:02:47 -0700 (PDT) X-Original-Return-Path: Received: from [192.168.1.131] (S010620aa4b008706.cg.shawcable.net. [174.0.112.194]) by mx.google.com with ESMTPS id u9sm8790694paf.22.2013.04.03.17.02.44 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 03 Apr 2013 17:02:45 -0700 (PDT) From: Paul Miller Content-Type: multipart/alternative; boundary="Apple-Mail=_6D9F1528-62B7-488C-A2EF-F5E08A9009D0" X-Original-Message-Id: Mime-Version: 1.0 (Mac OS X Mail 6.2 \(1499\)) Subject: Re: [LML] Re: Minimum MP for pressurization X-Original-Date: Wed, 3 Apr 2013 18:02:42 -0600 References: X-Original-To: "Lancair Mailing List" In-Reply-To: X-Mailer: Apple Mail (2.1499) --Apple-Mail=_6D9F1528-62B7-488C-A2EF-F5E08A9009D0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Aren't we talking absolute pressure? That 31.5 is absolute as is = Manifold Pressure, right?. Doesn't that mean you need something like 3 = inches above ambient to pressurize the cabin on the ground? So, at = 25,000 you still need 3inches above absolute (cabin absolute if = pressurized) and if you pull power back you lose the differential. So, if this is right, at 25,000, ambient is 11 inches. If the cabin is = 5 inches and the differential needs to be 3 inches then you need an = upper deck of 19 inches or you lose cabin. And if the leak rate = increases with cabin pressure maybe the 3 inches needs to be more. Sound about right? Paul Legacy >=20 > I was looking through the TSIO-550 Power Settings Chart and noticed = that it said the min MP for pressurization was 31.5".... I'm just = wondering if this is true for all IVPs? --Apple-Mail=_6D9F1528-62B7-488C-A2EF-F5E08A9009D0 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii

I was looking through the TSIO-550 Power = Settings Chart and noticed that it said the min MP for pressurization = was 31.5".... I'm just wondering if this is true for all = IVPs?

= --Apple-Mail=_6D9F1528-62B7-488C-A2EF-F5E08A9009D0--