X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 09 Dec 2010 07:56:17 -0500 Message-ID: X-Original-Return-Path: Received: from wolverine.webiness.com ([65.61.103.66] verified) by logan.com (CommuniGate Pro SMTP 5.3.11) with ESMTPS id 4633105 for lml@lancaironline.net; Tue, 07 Dec 2010 20:25:39 -0500 Received-SPF: none receiver=logan.com; client-ip=65.61.103.66; envelope-from=brent@regandesigns.com DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=regandesigns.com; h=Received:Message-ID:Date:From:User-Agent:X-Accept-Language:MIME-Version:To:Subject:Content-Type; b=hid5A8+PUtoFbqWSGaLSgstJ5GHXCtENZWykSN4oFs+kwBTl4fCLlS8yOG5Uv6Cn4fG/Oo3zp8+qoIbZjlrxIJBa2w2rPu7XRbGN06If1ozB4aL7mtTVmu6gzztxQ9g7; Received: from 207-170-226-178.static.twtelecom.net ([207.170.226.178] helo=[192.168.1.145]) by wolverine.webiness.com with esmtpa (Exim 4.69) (envelope-from ) id 1PQ8mF-0002SA-OZ for lml@lancaironline.net; Tue, 07 Dec 2010 17:25:03 -0800 X-Original-Message-ID: <4CFEDE6D.2070702@regandesigns.com> X-Original-Date: Tue, 07 Dec 2010 17:25:01 -0800 From: Brent Regan User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 X-Original-To: Lancair Mailing List Subject: Re: Inquiry: Critical Turbo Altitude (LIVP) with TSIO550E? Content-Type: multipart/alternative; boundary="------------080807000407070108090404" X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - wolverine.webiness.com X-AntiAbuse: Original Domain - lancaironline.net X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - regandesigns.com This is a multi-part message in MIME format. --------------080807000407070108090404 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Rick writes: <<<>>>> My understanding is that the compressor nozzle is not the compressor discharge, it is the axial gap in the housing at the circumference of the impeller. Flow leaving the nozzle then expands radially, slows and recovers pressure. A set of compressor maps for the T04 with the 0.5 and 0.6 A/R compressors would tell us what changes what. Regards Brent Regan --------------080807000407070108090404 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Rick writes: <<<<Likewise, it seems obvious that a compressor with a smaller A (outlet area) would generally flow a smaller volume and/or create/sustain a higher pressure ratio (other things equal and with other performance spec impacts) relative to a similar compressor with a larger A. However, I've never fully understood “why” Radius and A/R ratio (with Area held constant as shown below and assumed in our installations) has much effect on compressor performance (apparently based on some other articles I've read, it doesn’t). >>>>>

My understanding is that the compressor nozzle is not the compressor discharge, it is the axial gap in the housing at the circumference of the impeller. Flow leaving the nozzle then expands radially, slows and recovers pressure.

A set of compressor maps for the T04 with the 0.5 and 0.6 A/R compressors would tell us what changes what.

Regards
Brent Regan
--------------080807000407070108090404--