X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 30 [X] Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 01 Mar 2007 17:16:05 -0500 Message-ID: X-Original-Return-Path: Received: from ispmxfep01-srv.windstream.net ([166.102.165.157] verified) by logan.com (CommuniGate Pro SMTP 5.1.7) with ESMTP id 1876990 for lml@lancaironline.net; Thu, 01 Mar 2007 16:01:57 -0500 Received-SPF: pass receiver=logan.com; client-ip=166.102.165.157; envelope-from=airmale@windstream.net Received: from VALUED9133F4FA ([69.40.213.96]) by ispmxfep01-srv.windstream.net with ESMTP id <20070301210100.JMSQ2075.ispmxfep01-srv.windstream.net@VALUED9133F4FA> for ; Thu, 1 Mar 2007 15:01:00 -0600 From: "JHWebb" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] Re: aileron reflex on LNC2 X-Original-Date: Thu, 1 Mar 2007 16:01:23 -0500 X-Original-Message-ID: <012e01c75c44$c541e4f0$4fc5aed0$@net> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_012F_01C75C1A.DC6BDCF0" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Acdbn6PW4WRw6He7RdG8RUDit7kw7QAhED8w Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_012F_01C75C1A.DC6BDCF0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Gary, The ailerons move due to lift loads on the control surface. It is the rear part of the wing and produces lift. Slop or flex in the control system allows it to move. On most airfoils this upward movement can increment drag as a smaller surface is now producing lift (wing now minus ailerons this also normally negatively affects lift distribution) thereby increasing the induced drag because the wing is operating at a slightly higher angle of attack to equal the aircraft's weight. Additionally it can mess up chordwise lift distribution by producing an adverse pressure gradient. Jack Webb >Interesting, as my ailerons are reflexed up in flight, and flush with the wingtips on the ground. >Gary Edwards >LNC2 N21SN >235/320 ------=_NextPart_000_012F_01C75C1A.DC6BDCF0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Gary,

The ailerons move due to lift loads on the control = surface.  It is the rear part of the wing and produces lift. Slop or flex in the = control system allows it to move. On most airfoils this upward movement can = increment drag as a smaller surface is now producing lift (wing now minus ailerons = this also normally negatively affects lift distribution) thereby increasing = the induced drag because the wing is operating at a slightly higher angle of = attack to equal the aircraft’s weight.  Additionally it can mess up chordwise lift distribution by producing an adverse pressure = gradient.

 

Jack Webb

 

>Interesting, as my ailerons are reflexed up in flight, and = flush with the wingtips on the ground.

 

>Gary Edwards

>LNC2 N21SN

>235/320

 

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