X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 25 Feb 2009 08:13:21 -0500 Message-ID: X-Original-Return-Path: Received: from asp-3.reflexion.net ([205.237.99.178] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with SMTP id 3513502 for lml@lancaironline.net; Tue, 24 Feb 2009 10:41:32 -0500 Received-SPF: none receiver=logan.com; client-ip=205.237.99.178; envelope-from=cberland@systems3.net Received: (qmail 6957 invoked from network); 24 Feb 2009 15:40:54 -0000 Received: from unknown (HELO asp-3.reflexion.net) (127.0.0.1) by 0 (rfx-qmail) with SMTP; 24 Feb 2009 15:40:54 -0000 Received: by asp-3.reflexion.net (Reflexion email security v5.60.6) with SMTP; Tue, 24 Feb 2009 10:40:54 -0500 (EST) Received: (qmail 6913 invoked from network); 24 Feb 2009 15:40:53 -0000 Received: from unknown (HELO systems3.net) (98.172.79.178) by 0 (rfx-qmail) with SMTP; 24 Feb 2009 15:40:53 -0000 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C99696.46138CDA" Subject: [LML] IVP hstab incidence (was 360 in a small-tail LNC2) X-MimeOLE: Produced By Microsoft Exchange V6.5 X-Original-Date: Tue, 24 Feb 2009 08:40:51 -0700 X-Original-Message-ID: <87C33F695961494D886EB3B6C8A4765158BF28@s3server.Systems3.local> In-Reply-To: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [LML] IVP hstab incidence (was 360 in a small-tail LNC2) Thread-Index: AcmWKsPS+nCYc/5BS2+gc5eBkUqjTAAac1Rg References: From: "Craig Berland" X-Original-To: "Lancair Mailing List" This is a multi-part message in MIME format. ------_=_NextPart_001_01C99696.46138CDA Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable =20 My IVP is extremely forward CG. not out the front of the envelope, but more forward than any other IVP I know. and yet, at cruise I am trimmed several dots down from neutral, which would mean considerable elevator deflection.=20 I'm wondering if any IVP out there has the hstab incidence set up so that the elevator is neutral at cruise? Colyn Case =20 Colyn, the IV-P horizontal build specification is -.6 deg. The general consensus is zero to -.2 deg is better. I put mine in at -.2 deg. I can't say what effect that had yet. Additional note... the horizontal as per Lancair's CAD model is suppose to be a symmetrical airfoil however mine came out as an inverted wing and it was closed in Redmond. The top surface is flatter than the bottom. I CNC machined templates from the CAD models and the bottom surface matches the CAD model perfectly and the top surface, as I mentioned, is flat in comparison. My intuition is a horizontal at zero deg will be a little faster than one at -.6 deg. =20 Craig Berland =20 ------_=_NextPart_001_01C99696.46138CDA Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

My IVP is extremely forward CG. not out the front of the envelope, = but more forward than any other IVP I know.

and yet, at cruise I am trimmed several dots down from neutral, which would = mean considerable elevator deflection.

I'm wondering if any IVP out there has the hstab incidence set up so that = the elevator is neutral at cruise? = Colyn Case

Colyn, the IV-P horizontal build specification is -.6 = deg. The general consensus is zero to -.2 deg is better. I put mine in = at -.2 deg. I can’t say what effect that had yet. Additional = note… the horizontal as per Lancair’s CAD model is suppose to be a = symmetrical airfoil however mine came out as an inverted wing and it was closed in = Redmond. The top surface is flatter than the bottom. I CNC machined = templates from the CAD models and the bottom surface matches the CAD model perfectly = and the top surface, as I mentioned, is flat in comparison. My intuition = is a horizontal at zero deg will be a little faster than one at -.6 = deg.

Craig Berland

------_=_NextPart_001_01C99696.46138CDA--