Return-Path: Sender: (Marvin Kaye) To: lml Date: Mon, 18 Nov 2002 16:20:31 -0500 Message-ID: X-Original-Return-Path: Received: from [128.83.126.138] (HELO mail.utexas.edu) by logan.com (CommuniGate Pro SMTP 4.0.1) with SMTP id 1881231 for lml@lancaironline.net; Mon, 18 Nov 2002 15:45:42 -0500 Received: (qmail 14968 invoked by uid 0); 18 Nov 2002 20:45:41 -0000 Received: from dhcp-191-101.per.utexas.edu (HELO benefits3.mail.utexas.edu) (msteitle@146.6.191.101) by umbs-smtp-3 with SMTP; 18 Nov 2002 20:45:41 -0000 X-Original-Message-Id: <5.1.1.5.2.20021118143307.038f19d8@mail.utexas.edu> X-Sender: msteitle@mail.utexas.edu X-Mailer: QUALCOMM Windows Eudora Version 5.1.1 X-Original-Date: Mon, 18 Nov 2002 14:45:41 -0600 X-Original-To: Lancair Mail List From: Mark Steitle Subject: Fwd: Re: ES Wing Airfoil Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Lancair provided the following information for the ES wing airfoil. Based on my information, the 64212 airfois is in fact the same airfoil used for the Stallion. It is designed to have about 30% laminar flow on top and 70% laminar flow on the bottom during cruise. Laminar flow airfoils are more sensitive to bug splatter on leading edges, which according to the referenced article by Martin Hollmann (Custom Planes, December 2002), one instance of bug buildup on his Stallion resulted in an increased stall speed of about 15 knots. Sounds like something we should all pay attention to. -- Mark >Delivered-To: msteitle@mail.utexas.edu >X-Mailer: Novell GroupWise Internet Agent 6.0.1 >Date: Fri, 15 Nov 2002 09:49:57 -0800 >From: "Tim Ong" >To: >Subject: Re: ES Wing Airfoil > >Mark, > >The answer on the LML is correct. It is a blended 64212 airfoil. I will >have to check the washout. I believe it is 3 not 2 degrees. > >Tim > > >>> Mark Steitle 11/14/02 12:06 PM >>> >Can you tell me what airfoil is used for the Lancair ES? >Thank you, >Mark Steitle