X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 23 Feb 2010 09:34:51 -0500 Message-ID: X-Original-Return-Path: Received: from imr-mb01.mx.aol.com ([64.12.207.164] verified) by logan.com (CommuniGate Pro SMTP 5.3.2) with ESMTP id 4134484 for lml@lancaironline.net; Tue, 23 Feb 2010 00:10:38 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.207.164; envelope-from=Sky2high@aol.com Received: from imo-da03.mx.aol.com (imo-da03.mx.aol.com [205.188.169.201]) by imr-mb01.mx.aol.com (8.14.1/8.14.1) with ESMTP id o1N59tQY007378 for ; Tue, 23 Feb 2010 00:09:55 -0500 Received: from Sky2high@aol.com by imo-da03.mx.aol.com (mail_out_v42.9.) id q.d0e.6640228f (43895) for ; Tue, 23 Feb 2010 00:09:53 -0500 (EST) Received: from magic-m04.mail.aol.com (magic-m04.mail.aol.com [172.21.172.75]) by cia-dc05.mx.aol.com (v127.7) with ESMTP id MAILCIADC058-ab774b83631d2fc; Tue, 23 Feb 2010 00:09:49 -0500 From: Sky2high@aol.com X-Original-Message-ID: <21c9d.1c988d4c.38b4bd1d@aol.com> X-Original-Date: Tue, 23 Feb 2010 00:09:49 EST Subject: Re: [LML] Re: 320 Airfoil Reflex X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_21c9d.1c988d4c.38b4bd1d_boundary" X-Mailer: AOL 9.5 sub 155 X-AOL-ORIG-IP: 67.175.242.202 X-AOL-IP: 172.21.172.75 X-Spam-Flag:NO X-AOL-SENDER: Sky2high@aol.com --part1_21c9d.1c988d4c.38b4bd1d_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Chris, It is interesting that Lance chose -7 degrees rather than the -10 seen in chart 2. Perhaps the pitching moment is too great at -10. Note that Larry Henney claims max speed at 3 degrees higher than the faired position I.E. -10 degrees. However, in that configuration his elevator horns are sticking above the horizontal stab (significant down elevator). It is difficult to overcome the extra nose up pitch. Scott In a message dated 2/22/2010 10:10:07 P.M. Central Standard Time, chris_zavatson@yahoo.com writes: <> Dan, et al The attached excerpts show another key reason for the reflex. Our planes are too fast for this airfoil without using reflex. Reflex repositions the drag bucket to coincide with our cruise speeds. The paper on the NLF 0215 describes how this feature was built in from right from the start. Chris Zavatson N91CZ 360std _www.N91CZ.com_ (http://www.n91cz.com/) -- For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html --part1_21c9d.1c988d4c.38b4bd1d_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Chris,

It is interesting that Lance chose -7 degrees rather than the -10 see= n in=20 chart 2. Perhaps the pitching moment is too great at -10. Note= that=20 Larry Henney claims max speed at 3 degrees higher than the faired position= I.E.=20 -10 degrees. However, in that configuration his elevator horns are= =20 sticking above the horizontal stab (significant down elevator). It= is=20 difficult to overcome the extra nose up pitch.

Scott

In a message dated 2/22/2010 10:10:07 P.M. Central Standard Time,=20 chris_zavatson@yahoo.com writes:

= www.N91CZ.com

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