Return-Path: Sender: (Marvin Kaye) To: lml@lancaironline.net Date: Tue, 16 Dec 2003 10:43:06 -0500 Message-ID: X-Original-Return-Path: Received: from imo-d03.mx.aol.com ([205.188.157.35] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2892172 for lml@lancaironline.net; Mon, 15 Dec 2003 17:48:58 -0500 Received: from Sky2high@aol.com by imo-d03.mx.aol.com (mail_out_v36_r4.8.) id q.1c1.12f8e1cd (3310) for ; Mon, 15 Dec 2003 17:48:44 -0500 (EST) From: Sky2high@aol.com X-Original-Message-ID: <1c1.12f8e1cd.2d0f944c@aol.com> X-Original-Date: Mon, 15 Dec 2003 17:48:44 EST Subject: Re: [LML] FW: Vortex Generators X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1071528524" X-Mailer: Thailand for Windows sub 280 -------------------------------1071528524 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 12/15/2003 12:03:29 PM Central Standard Time, gtanner@bendcable.com writes: This inquiry regarding vortex generators was forwarded to me by the president of my local EAA chapter 1345. Just a brief history of my background regarding vgs: I've been involved with vortex generators for general aviation aircraft from the very beginning - over 16 years. I knew the benefits of vgs, and our company, Pacific Northwest Aero LLC, which manufactures aircraft parts also provides vg kits for experimental/homebuilt aircraft. Regarding Lancairs - we presently have a kit for the 320/360 which reduces the stall speed at least 6 knots. All the owners' comments state that the low speed handling characteristics are greatly improved. This particular kit uses vgs on the wings only. We do have kits for other models of aircraft that use the vgs on the vertical as well as the horizontal, for example, the Murphy Moose and the One Design. By properly placing the vgs on the wings you can get significant lower stall speeds without penalizing the cruise speed. I have no problem at all with "performance" enhancers - as long as data is provided when flown by an independent test pilot - I would like to see pressure altitudes, temperatures, aircraft weight and balance and indicated, calibrated and true airspeeds with and without vgs. Maybe a CAFE test series. <<<...the low speed handling characteristics are greatly improved.>>> - is a qualitative statement and is fine when used as such. My Lancair 320 low speed handling characteristics were greatly improved after the PIC had about 60 flight hours of experience under his belt. Scott Krueger Sky2high@aol.com II-P N92EX IO320 Aurora, IL (KARR) "...as we know, there are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns - the ones we don't know we don't know." D. Rumsfeld -------------------------------1071528524 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 12/15/2003 12:03:29 PM Central Standard Time,=20 gtanner@bendcable.com writes:

This inq= uiry=20 regarding vortex generators was forwarded to me by the president of my loc= al=20 EAA chapter 1345. Just a brief history of my background regarding vgs:&nbs= p;=20 I've been involved with vortex generators for general aviation aircraft fr= om=20 the very beginning - over 16 years. I knew the benefits of vgs, and our=20 company, Pacific Northwest Aero LLC, which manufactures aircraft parts als= o=20 provides vg kits for experimental/homebuilt aircraft= .=20 Regarding Lancairs - we presently have a kit for the 320/360 which reduces= the=20 stall speed at least 6 knots. All the owners' comments state that the low=20 speed handling characteristics are greatly improved. This particular kit u= ses=20 vgs on the wings only. We do have kits for other models of aircraft that u= se=20 the vgs on the vertical as well as the horizontal, for example, the Murphy= =20 Moose and the One Design. By properly placing the vgs on the wings you can= get=20 significant lower stall speeds without penalizing the cruise speed.=20

I have no problem at all with "performance" enhancers - as long as data= is=20 provided when flown by an independent test pilot -

I would like to see pressure altitudes, temperatures, aircraft weight a= nd=20 balance and indicated, calibrated and true airspeeds with and without=20 vgs. Maybe a CAFE test series.

<<<...the low speed handling characteristics are greatly=20 improved.>>> - is a qualitative statement and is fine when use= d as=20 such.

My Lancair 320 low speed handling characteristics were greatly improved= =20 after the PIC had about 60 flight hours of experience under his belt.

Scott=20 Krueger
Sky2high@aol.com
II-P N92EX IO320 Aurora, IL (KARR)

"..= .as=20 we know, there are known knowns; there are things we know we know. We also k= now=20 there are known unknowns; that is to say we know there are some things we do= not=20 know. But there are also unknown unknowns - the ones we don't know we don't=20 know." D. Rumsfeld

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