Return-Path: Sender: (Marvin Kaye) To: lml Date: Mon, 13 Jan 2003 09:29:39 -0500 Message-ID: X-Original-Return-Path: Received: from smtp02.mrf.mail.rcn.net ([207.172.4.61] verified) by logan.com (CommuniGate Pro SMTP 4.0.5) with ESMTP id 1981940 for lml@lancaironline.net; Mon, 13 Jan 2003 04:23:54 -0500 Received: from 208-59-159-98.s352.tnt2.frdb.va.dialup.rcn.com ([208.59.159.98] helo=OFFICE) by smtp02.mrf.mail.rcn.net with smtp (Exim 3.35 #4) id 18Y0oz-0003OD-00 for lml@lancaironline.net; Mon, 13 Jan 2003 04:23:53 -0500 X-Original-Message-ID: <031201c2bae5$a90c06d0$ae9e3bd0@OFFICE> From: "Bill & Sue" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Re: Wing Loading mysteries X-Original-Date: Mon, 13 Jan 2003 04:25:05 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_030F_01C2BABB.BF9B1E60" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2720.3000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 This is a multi-part message in MIME format. ------=_NextPart_000_030F_01C2BABB.BF9B1E60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Scott writes: "In our aircraft configuration, the main wings can only carry the = weight of the airplane which does not increase with tail down load. = Only the angle of attack is changed. Generally, as an airplane is = loaded towards Max Gross Weight, the CG moves rearward thus reducing the = amount of tail down load." Scott, can't agree with you on this one. The wings DO carry more than = the weight of the airplane. They also carry the aerodynamic "weight" of = the tail down force. Moving the CG forward increases the total lift = required from the wing. The greater lift is provided by increasing the = AOA, therefore putting you just a little closer to a stall, ergo, moving = the CG forward also increases the stall speed, even though the aircraft = total weight remains the same.=20 Bill harrelson@erols.com N5ZQ LNC2 O-320 VA42 Fredericksburg, VA ------=_NextPart_000_030F_01C2BABB.BF9B1E60 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
Scott=20 writes:
"In our = aircraft=20 configuration, the main wings can only carry the weight of the = airplane which=20 does not increase with tail down load.  Only the angle of attack = is=20 changed.  Generally, as an airplane is loaded towards Max Gross = Weight,=20 the CG moves rearward thus reducing the amount of tail down=20 load."
 
Scott, = can't agree with you=20 on this one. The wings DO carry more than the weight of the airplane. = They=20 also carry the aerodynamic "weight" of the tail down force. Moving the = CG=20 forward increases the total lift required from the wing. The = greater=20 lift is provided by increasing the AOA, therefore putting you just a = little=20 closer to a stall, ergo, moving the CG forward also increases the = stall speed,=20 even though the aircraft total weight remains the same. =
 
 
Bill
harrelson@erols.com=
N5ZQ  = LNC2 =20 O-320  VA42  Fredericksburg, VA

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