Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Mon, 24 Jan 2005 21:22:22 -0500 Message-ID: X-Original-Return-Path: Received: from imo-m16.mx.aol.com ([64.12.138.206] verified) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 620248 for lml@lancaironline.net; Mon, 24 Jan 2005 18:42:37 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.138.206; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-m16.mx.aol.com (mail_out_v37_r3.8.) id q.129.550a2ab6 (4410) for ; Mon, 24 Jan 2005 18:42:03 -0500 (EST) From: Sky2high@aol.com X-Original-Message-ID: <129.550a2ab6.2f26e1ca@aol.com> X-Original-Date: Mon, 24 Jan 2005 18:42:02 EST Subject: Re: [LML] Re: Alert. NACA 64212 X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1106610122" X-Mailer: 9.0 Security Edition for Windows sub 5000 -------------------------------1106610122 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 1/24/2005 1:37:19 P.M. Central Standard Time, bill_kennedy_3@hotmail.com writes: I'm interested in taming the stall characteristics of my 320. I've tried VGs without noticeable change, but didn't really experiment with different chord location or yarn (I tried 10% chord from tip to stub border -- they were as ugly as I expected). I can live with the performance that I've got (nasty stall in all configurations -- thankfully fairly benign in ground effect), but I'd go to some trouble to improve if someone more creative than I can dream something up. Bill, Be careful. We have a very interesting variant of the NLF(1)-0215F (flapped natural laminar flow) - totally different than 64212. Our wing utilizes the reflex flap to provide a tremendous reduction in drag even though it is a relatively FAT wing. It has the interesting characteristic that dirt only adds to the drag, not to any significant loss of lift. The wing tip is, unlike the Legacy, is washed out quite a bit. It maintains laminar flow over quite a bit of the upper surface and a good deal of the bottom - the wing mis-built, rough, ugly underneath, mis-matched incidence, etc could all contribute to less than perfect performance. For me, I'll avoid the stall regime and regale in the performance area. I will take no naps flying my LNC2. Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) Fair and Balanced Opinions at No Charge! There is an oxymoron in that, somewhere... -------------------------------1106610122 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 1/24/2005 1:37:19 P.M. Central Standard Time,=20 bill_kennedy_3@hotmail.com writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>I'm=20 interested in taming the stall characteristics of my 320. I've tried VGs=20
without noticeable change, but didn't really experiment with different= =20 chord
location or yarn (I tried 10% chord from tip to stub border -- t= hey=20 were as
ugly as I expected). I can live with the performance that I've= got=20 (nasty
stall in all configurations -- thankfully fairly benign in grou= nd=20 effect),
but I'd go to some trouble to improve if someone more creativ= e=20 than I can
dream something up.

Bill,

Be careful. We have a very interesting variant of the NLF(1)-0215= F=20 (flapped natural laminar flow) - totally different than 64212. Ou= r=20 wing utilizes the reflex flap to provide a tremendous reduction in drag even= =20 though it is a relatively FAT wing. It has the interesting=20 characteristic that dirt only adds to the drag, not to any significant=20= loss=20 of lift. The wing tip is, unlike the Legacy, is washed=20= out=20 quite a bit. It maintains laminar flow over quite a bit of the upper=20 surface and a good deal of the bottom - the wing mis-built, rough, ugly=20 underneath, mis-matched incidence, etc could all contribute to less than per= fect=20 performance.

For me, I'll avoid the stall regime and regale in the performance=20 area. I will take no naps flying my LNC2.=20

Scott Krueger=20 AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL (KARR)

Fai= r=20 and Balanced Opinions at No Charge!
There is an oxymoron in that,=20 somewhere...

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