X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 27 Jan 2013 23:52:24 -0500 Message-ID: X-Original-Return-Path: Received: from nm9-vm0.access.bullet.mail.mud.yahoo.com ([66.94.237.249] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTPS id 6032223 for lml@lancaironline.net; Sun, 27 Jan 2013 22:10:58 -0500 Received-SPF: none receiver=logan.com; client-ip=66.94.237.249; envelope-from=sdfields68@att.net Received: from [66.94.237.194] by nm9.access.bullet.mail.mud.yahoo.com with NNFMP; 28 Jan 2013 03:10:24 -0000 Received: from [68.142.198.204] by tm5.access.bullet.mail.mud.yahoo.com with NNFMP; 28 Jan 2013 03:10:24 -0000 Received: from [127.0.0.1] by smtp105.sbc.mail.mud.yahoo.com with NNFMP; 28 Jan 2013 03:10:24 -0000 X-Yahoo-Newman-Id: 286828.53181.bm@smtp105.sbc.mail.mud.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: WndrqCUVM1krGOnXyJaFsGvx.OQ54Q7Zrri4HddirWDeGux OZTdcxQ2T2BYVMNzIJYTIwOy0VHawqJ71GNkebggy8Dh_8EWX.QbXcKuZN2W dh7qIytlJn9jLxj1s0DpWWYvGRR8PcLZBy9jeH62m5chqeOHIkrDG8m42PO. bv0LqJGUDaasRvS6LNis7mkwzNlXIcZxQsVnsKK5pmcfTez8FMw0pHnlIlpc rOmX210LBFwuL3TnUwfgYJVFxSlwyoh.TMAVnB1yGI_qXu4Pd_tDdfKvSMMW qrDq4QHbtH_74j3i.8QSs7br46_IpYUSqSmXyxun00q3KWvYly2EGg0uvW_C Jci9FApEeyeKAGn9OCo0D6U74HtCGRxbef_pYHfSb8BJ4M1XzLn9g_usJZkB 07hRb4aLCjt9cWjFLjoW6GYyrfSxXwJykRRCcIHHNsfO9pV2e X-Yahoo-SMTP: oOs2YV.swBD88T6A.ZRi5opgiddpIVJ9zKnfW4KnPw-- Received: from Study (sdfields68@108.232.180.51 with login) by smtp105.sbc.mail.mud.yahoo.com with SMTP; 27 Jan 2013 19:10:24 -0800 PST From: "Stan Fields" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] Re: Prop efficiency -- Hartzell X-Original-Date: Sun, 27 Jan 2013 21:10:22 -0600 X-Original-Message-ID: <00ae01cdfd05$04826290$0d8727b0$@net> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00AF_01CDFCD2.B9E7F290" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Ac37+sw0AY0erVlZRFOHMCJj+z5TMwBCeb2g Content-Language: en-us This is a multi-part message in MIME format. ------=_NextPart_000_00AF_01CDFCD2.B9E7F290 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable I too would like to see the Hartzell prop efficiency analysis. Could you = send that to me. sdfields68@att.net Thanks=20 Stan Fields =20 From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of = vtailjeff@aol.com Sent: Saturday, January 26, 2013 1:25 PM To: lml@lancaironline.net Subject: [LML] Re: Prop efficiency -- Hartzell =20 Charley, =20 I would like that! =20 Jeff Sent from my iPad On Jan 26, 2013, at 1:07 AM, Charles Brown wrote: I have Hartzell's efficiency analysis for their 3-blade and 2-blade = props for the Legacy / IO550, if anyone's interested. (I suspect that = they would apply equally to any airframe and engine combination). =20 =20 On Jan 25, 2013, at 1:32 PM, Bill Bradburry wrote: 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=20 =20 ------=_NextPart_000_00AF_01CDFCD2.B9E7F290 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable

I too would like to see the Hartzell prop efficiency analysis. Could = you send that to me.

sdfields68@att.net

Thanks

Stan Fields

From:= = Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of = vtailjeff@aol.com
Sent: Saturday, January 26, 2013 1:25 = PM
To: lml@lancaironline.net
Subject: [LML] Re: Prop = efficiency -- Hartzell

Charley,

I = would like that!

Jeff

Sent from my = iPad

On Jan 26, 2013, = at 1:07 AM, Charles Brown <browncc1@verizon.net> = wrote:

I have Hartzell's efficiency analysis for their = 3-blade and 2-blade props for the Legacy / IO550, if anyone's = interested. (I suspect that they would apply equally to any = airframe and engine combination).

On = Jan 25, 2013, at 1:32 PM, Bill Bradburry wrote:

Fr= ed,
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??
Ho= w 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?
Bi= ll

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