X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 25 Jan 2013 14:32:24 -0500 Message-ID: X-Original-Return-Path: Received: from fmailhost05.isp.att.net ([207.115.11.55] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTP id 6029160 for lml@lancaironline.net; Fri, 25 Jan 2013 09:25:10 -0500 Received-SPF: none receiver=logan.com; client-ip=207.115.11.55; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-98-85-189-34.mco.bellsouth.net[98.85.189.34]) by isp.att.net (frfwmhc05) with SMTP id <20130125142434H05008qjtie>; Fri, 25 Jan 2013 14:24:34 +0000 X-Originating-IP: [98.85.189.34] From: "Bill Bradburry" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] How Slick Is Your Airplane? (PDF attached) X-Original-Date: Fri, 25 Jan 2013 09:24:33 -0500 X-Original-Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0040_01CDFADD.C9E66B50" X-Mailer: Microsoft Office Outlook 11 thread-index: Ac36/0Z/hGTsWQxQSsK7KxFPiJ8iKgAB8t7Q X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 This is a multi-part message in MIME format. ------=_NextPart_000_0040_01CDFADD.C9E66B50 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Fred, I have never been great at reading graphs, but the diagonal line is airspeed, not HP corrected for prop efficiency. That is the vertical line. Or am I wrong?? How do you do this if you have an alternative engine and have no idea of what your HP is? It seems that you are guessing about the prop efficiency and I would have to do the same for HP. Perhaps if someone gets a FP drag number for the Lancair Legacy FG, I could work backwards and find the HP? Bill _____ From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Frederick Moreno Sent: Friday, January 25, 2013 8:23 AM To: lml@lancaironline.net Subject: [LML] How Slick Is Your Airplane? (PDF attached) Make some careful test flights and follow the instructions in the attached paper, and you can make a reasonably good estimate. Fred Moreno ------=_NextPart_000_0040_01CDFADD.C9E66B50 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Fred,

I have never been great at reading = graphs, but the diagonal line is airspeed, not HP corrected for prop = efficiency. That is the vertical line. Or am I wrong??

How do you do this if you have an alternative engine and have no idea of what your HP is? It seems = that you are guessing about the prop efficiency and I would have to do the same for = HP. Perhaps if someone gets a FP drag number for the Lancair Legacy FG, I could work backwards and find the HP?

Bill

From: Lancair Mailing List = [mailto:lml@lancaironline.net] On Behalf Of Frederick Moreno
Sent: Friday, January 25, = 2013 8:23 AM
To: = lml@lancaironline.net
Subject: [LML] How Slick = Is Your Airplane? (PDF attached)

Make some = careful test flights and follow the instructions in the attached paper, and you can = make a reasonably good estimate.

Fred = Moreno

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