X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 03 Nov 2007 10:06:12 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m20.mx.aol.com ([64.12.137.1] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2453013 for lml@lancaironline.net; Fri, 02 Nov 2007 20:21:17 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.1; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-m20.mx.aol.com (mail_out_v38_r9.3.) id q.cc1.1fb3287d (39330) for ; Fri, 2 Nov 2007 20:20:31 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: X-Original-Date: Fri, 2 Nov 2007 20:20:31 EDT Subject: Re: [LML] Flap position X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1194049231" X-Mailer: AOL 9.0 VR sub 5006 X-Spam-Flag: NO -------------------------------1194049231 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 11/2/2007 5:56:36 P.M. Central Daylight Time, elippse@sbcglobal.net writes: From my experiments, the in-flight flap reflex position is a function of required CL which in turn is related to weight, TAS, and density altitude. I can change my flap reflex position by 2 deg. which will change TAS by 3mph; I've done this over and over. This is due to the relationship between parasite CD and camber of the NLF1 0215F airfoil. Use maximum reflex when fast, light, and low, and reduce it when slower, heavy, and high! You Bet, Paul. There are not too many airplanes that give one such interesting control over the performance by changes the shape of the wing thru flap positions (uh, this includes trimming for ugly CG problems). Other flapper-doodles are only designed to assist in the Cl at approach/landing speeds. We are lucky to be flying one of the more interesting wings extant. Grayhawk ************************************** See what's new at http://www.aol.com -------------------------------1194049231 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 11/2/2007 5:56:36 P.M. Central Daylight Time,=20 elippse@sbcglobal.net writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>

From my experiments, the in-flight flap=20 reflex position is a function of required CL which in turn is related to weight, TAS, and den= sity=20 altitude. I can change my flap reflex position by 2 deg. which will=20 change TAS by 3mph; I've done this over and over. This is due to the=20 relationship between parasite CD and=20= camber=20 of the NLF1 0215F airfoil. Use maximum reflex when f= ast,=20 light, and low, and reduce it when slower, heavy, and=20 high!

You Bet, Paul.

There are not too many airplanes that give one such=20 interesting control over the performance by changes the shape of the wi= ng=20 thru flap positions (uh, this includes trimming for ugly CG problems).=20 Other flapper-doodles are only designed to assist in the Cl at approach/land= ing=20 speeds.

We are lucky to be flying one of the more interesting wings extant.

Grayhawk

See what's n= ew at AOL.com=20= and Make AOL Your Homepage.

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