X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 15 Jan 2013 07:46:08 -0500 Message-ID: X-Original-Return-Path: Received: from blu0-omc3-s8.blu0.hotmail.com ([65.55.116.83] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTP id 6012172 for lml@lancaironline.net; Mon, 14 Jan 2013 18:26:39 -0500 Received-SPF: neutral receiver=logan.com; client-ip=65.55.116.83; envelope-from=frederickmoreno@bigpond.com Received: from BLU0-SMTP347 ([65.55.116.74]) by blu0-omc3-s8.blu0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675); Mon, 14 Jan 2013 15:26:03 -0800 X-EIP: [z6KMd1BhA46SY/pbm46MFbLq4x8XKjUoaFXqlNC5Yew=] X-Originating-Email: [frederickmoreno@bigpond.com] X-Original-Message-ID: X-Original-Return-Path: frederickmoreno@bigpond.com Received: from Razzle ([124.184.112.212]) by BLU0-SMTP347.blu0.hotmail.com over TLS secured channel with Microsoft SMTPSVC(6.0.3790.4675); Mon, 14 Jan 2013 15:26:02 -0800 MIME-Version: 1.0 X-Original-Date: Tue, 15 Jan 2013 07:25:45 +0800 Content-Type: multipart/alternative; charset="ISO-8859-1"; boundary="------------Boundary-00=_XE2NCJD0000000000000" X-Mailer: IncrediMail (6395248) From: Frederick Moreno X-FID: FLAVOR00-NONE-0000-0000-000000000000 X-Priority: 3 X-Original-To: "Lancair Mail (lml@lancaironline.net)" Subject: Fw: Re: lml chart X-OriginalArrivalTime: 14 Jan 2013 23:26:02.0724 (UTC) FILETIME=[84A4DA40:01CDF2AE] --------------Boundary-00=_XE2NCJD0000000000000 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable A caution to all. Because of the math that underlies all this flat plate area calculation stuff, be advised that a 1% error in the true air speed number yields a 3% error in the calculated flat plate area with a simila= r high sensitivity to the HP estimate. So take it all with a grain of salt= =2E =0D =0D =0D Fred, keeper of only half-vast knowledge=0D =0D =0D =0D =0D -------Original Message-------=0D =0D From: Dennis Ramsey=0D Date: 15/01/2013 7:11:43 AM=0D To: Frederick Moreno=0D Subject: Re: lml chart=0D =0D Fred, ignore my question regarding chart interpretation. I went back to your January 2009 document where you explained that the chart was in stat= ute MPH and that it had to be corrected to sea level using the approximation = of 1% per thousand feet. Doing that takes me to a more believable 1.8 sq f= t of flat plate area for my IV. Now onto the cowl flaps and plenum. =20 Probably dimensioned returns at these speeds but if I could get 5 knots I would be thrilled.=0D =0D =0D Thanks for all that you have shared from your vast knowledge! --------------Boundary-00=_XE2NCJD0000000000000 Content-Type: text/html; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable
A caution to all.  Because of the math that underlies all this = flat plate area calculation stuff, be advised that a 1% error in the true= air speed number yields a 3%  error in the calculated flat plate ar= ea with a similar high sensitivity to the HP estimate.  So take it a= ll with a grain of salt. 
 
 
Fred, keeper of only half-vast knowledge
 
 
 
 
-= ------Original Message-------
 
Date: 15/01/2013 7= :11:43 AM
Subject: Re: lml c= hart
 
Fred, ignore my question regarding chart interpretation.  = I went back to your January 2009 document where you explained that the c= hart was in statute MPH and that it had to be corrected to sea level usin= g the approximation of 1% per thousand feet.   Doing that takes= me to a more believable 1.8 sq ft of flat plate area for my IV. &nb= sp; Now onto the cowl flaps and plenum.   Probably dimensioned = returns at these speeds but if I could get 5 knots I would be thrilled.
Thanks for all that you have shared from your vast knowledge!=


 
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