X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 06 Dec 2007 14:40:30 -0500 Message-ID: X-Original-Return-Path: Received: from imo-m21.mx.aol.com ([64.12.137.2] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2557358 for lml@lancaironline.net; Wed, 05 Dec 2007 10:16:13 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.2; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-m21.mx.aol.com (mail_out_v38_r9.3.) id q.d20.1a775256 (42807) for ; Wed, 5 Dec 2007 10:15:34 -0500 (EST) From: Sky2high@aol.com X-Original-Message-ID: X-Original-Date: Wed, 5 Dec 2007 10:15:31 EST Subject: Shark-skin suits back in style! X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1196867731" X-Mailer: AOL 9.0 VR sub 5006 X-Spam-Flag: NO -------------------------------1196867731 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en Dr. Amy Lang, University of Alabama, Tuscaloosa, Alabama =20 =E2=80=9CReducing the Drag Over Aircraft by Mimicking the Surface Geometry=20= of=20 Bristled Shark Skin Scales=E2=80=9D =20 (Category: Aviation)=20 The issue of reducing drag over solid surfaces in high velocity flows is on= e=20 that has kept researchers working for years. It is estimated that even a 1= %=20 reduction in drag can save an airline company $100,000 to $200,000 and at=20 least 25,000 gallons of fuel per year per aircraft. Worldwide, this 1%=20 reduction could translate to fuel savings of more than $1 billion per year.= The=20 resulting reduction in emissions into our air is equally as impressive. With= her=20 Lindbergh Grant, Dr. Lang will determine whether the surface texture on the= =20 skin of fast-swimming sharks, potentially capable of bristling their scales= =20 when in pursuit of prey, could be mimicked and used to reduce the drag on=20 aircraft. She will perform water tunnel experiments to measure the flow ove= r and=20 within a bristled sharkskin model (2 cm size scales), which achieves=20 similarity with real sharkskin (0.2 mm size scales) by a corresponding scal= e down in=20 velocity of the experiments. She will also obtain drag measurements over a= =20 sharkskin model in a Couette flow facility containing high viscosity oil. =20= Her=20 objective is to reveal the boundary layer control mechanisms of the bristle= d=20 sharkskin to deduce the means by which sharks minimize their drag. Dr. Lan= g=E2=80=99 s project has the potential to reduce aircraft drag by 30%, once the=20 technology is refined and implemented, greatly reducing the nation=E2=80= =99s dependency on=20 fossil fuels, reducing carbon dioxide emissions into the atmosphere, and=20 costs.=20 Wonder how it works in icing conditions?=20 Grayhawk **************************************Check out AOL's list of 2007's hottest= =20 products. (http://money.aol.com/special/hot-products-2007?NCID=3Daoltop00030000000001) -------------------------------1196867731 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en
Dr. Amy Lang, University of Al= abama,=20 Tuscaloosa, Alabama=20

=E2=80=9CReducing th= e Drag Over=20 Aircraft by Mimicking the Surface Geometry of Bristled Shark Sk= in=20 Scales=E2=80=9D

(Category: =20 Aviation)

The issue of reducin= g drag=20 over solid surfaces in high velocity flows is one that has kept researchers=20 working for years.  It is estimated that even a 1% reduction in drag ca= n=20 save an airline company $100,000 to $200,000 and at least 25,000 gallons of=20= fuel=20 per year per aircraft.  Worldwide, this 1% reduction could translate to= =20 fuel savings of more than $1 billion per y= ear.=20 The resulting reduction in emissions into our air is equally as impressive.=20= With=20 her Lindbergh Grant,=20= Dr.=20 Lang will determine whether the surface texture on the skin of fast-swimming= =20 sharks, potentially capable of bristling their scales when in pursuit of pre= y,=20 could be mimicked and used to reduce the drag on aircraft. She will perform=20 water tunnel experiments to measure the flow over and within a bristled=20 sharkskin model (2 cm size scales), which achieves similarity with real=20 sharkskin (0.2 mm size scales) by a corresponding scale down in velocity of=20= the=20 experiments.  She will also obtain drag measurements over a sharkskin m= odel=20 in a Couette flow facility containing high viscosity oil.  Her objectiv= e is=20 to reveal the boundary layer control mechanisms of the bristled sharkskin to= =20 deduce the means by which sharks minimize their drag.  Dr. Lang=E2=80= =99s project=20 has the potential to reduce aircraft drag=20 by 30%, once the technology is refined and implemented, greatly reducing the= =20 nation=E2=80=99s dependency on fossil fuels, reducing carbon dioxide emissio= ns into the=20 atmosphere, and costs.

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Wonder how it works in icing conditions?

Grayhawk




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