X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 01 Nov 2007 07:51:36 -0400 Message-ID: X-Original-Return-Path: Received: from bay0-omc2-s7.bay0.hotmail.com ([65.54.246.143] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2442824 for lml@lancaironline.net; Thu, 01 Nov 2007 02:17:42 -0400 Received-SPF: pass receiver=logan.com; client-ip=65.54.246.143; envelope-from=bill_kennedy_3@hotmail.com Received: from BAY128-W26 ([65.55.133.61]) by bay0-omc2-s7.bay0.hotmail.com with Microsoft SMTPSVC(6.0.3790.3959); Wed, 31 Oct 2007 23:17:05 -0700 X-Original-Message-ID: X-Original-Return-Path: bill_kennedy_3@hotmail.com Content-Type: multipart/alternative; boundary="_543f9a71-6717-4dda-ae38-bd1e84a97954_" X-Originating-IP: [71.111.172.124] From: Bill Kennedy X-Original-To: Subject: >Lancair 320 MKII tail best flap position for speed and safe flight characteristics? X-Original-Date: Wed, 31 Oct 2007 23:17:04 -0700 Importance: Normal MIME-Version: 1.0 X-OriginalArrivalTime: 01 Nov 2007 06:17:05.0072 (UTC) FILETIME=[D2DC0300:01C81C4E] --_543f9a71-6717-4dda-ae38-bd1e84a97954_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable This post is mostly a question for the guys with fast 320s with MKII tails. My power off stall is usually the first half of a snap roll. Recovery is ea= sy, but it's the ugliest stall I've ever seen. I've heard F-4 pukes complai= n about this. I've been trying this and that to tame the stall for several = years now.=20 My last attempt was to adjust the flaps down about degree or two from their= faired position. NOTE: My faired position may or may not be what Lancair h= ad in mind to be the faired position. I never could figure that out exactly= . So, anyway, I screwed them down a degree or so and went for a flight. The s= tall numbers are now dead on with Lancairs numbers, and better yet, I can a= ctually fly the thing in a full stall (very busy feet, but no snap). So far= so good. I'd like to get some comparison numbers from a fast 320/360 MKII tail. The = angular difference between my main longeron canopy rail and the top inboard= surface of my flaps is between 11 and 12 degrees. The plane has always been a screamer, but now I've got a crappy wood prop o= n in without a spinner. It's hard to get good data for comparison. Question 1: If your 320/360MKII tail is fast, what is the angle between the= longeron and top of flap at inboard end? I'd really like to know where the= flap should be for clean, fast flying. I could live with a crappy stall, b= ut I'm hoping to have my cake and eat it too. Question 2: If you know where the text book "faired" position is supposed t= o be, what is the angle between the longeron and top of flap at inboard end= with the flap in it's faired position? Assistance will be greatly appreciated!=20 Bill Kennedy N43BK 440 hours --_543f9a71-6717-4dda-ae38-bd1e84a97954_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable This post is mostly a question for the guys with fast 320s with MKII tails.=

My power off stall is usually the first half of a snap roll. Recove= ry is easy, but it's the ugliest stall I've ever seen. I've heard F-4 pukes= complain about this. I've been trying this and that to tame the stall for = several years now.

My last attempt was to adjust the flaps down abo= ut degree or two from their faired position. NOTE: My faired position may o= r may not be what Lancair had in mind to be the faired position. I never co= uld figure that out exactly.

So, anyway, I screwed them down a degre= e or so and went for a flight. The stall numbers are now dead on with Lanca= irs numbers, and better yet, I can actually fly the thing in a full stall (= very busy feet, but no snap). So far so good.

I'd like to get some c= omparison numbers from a fast 320/360 MKII tail. The angular difference bet= ween my main longeron canopy rail and the top inboard surface of my flaps i= s between 11 and 12 degrees.

The plane has always been a screamer, b= ut now I've got a crappy wood prop on in without a spinner. It's hard to ge= t good data for comparison.

Question 1: If your 320/360MKII tail is = fast, what is the angle between the longeron and top of flap at inboard end= ? I'd really like to know where the flap should be for clean, fast flying. = I could live with a crappy stall, but I'm hoping to have my cake and eat it= too.

Question 2: If you know where the text book "faired" position = is supposed to be, what is the angle between the longeron and top of flap a= t inboard end with the flap in it's faired position?

Assistance will= be greatly appreciated!
Bill Kennedy
N43BK 440 hours
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