X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 03 Oct 2008 12:03:53 -0400 Message-ID: X-Original-Return-Path: Received: from mta31.charter.net ([216.33.127.82] verified) by logan.com (CommuniGate Pro SMTP 5.2.8) with ESMTP id 3197843 for lml@lancaironline.net; Fri, 03 Oct 2008 08:55:03 -0400 Received-SPF: pass receiver=logan.com; client-ip=216.33.127.82; envelope-from=troneill@charter.net Received: from aarprv04.charter.net ([10.20.200.74]) by mta31.charter.net (InterMail vM.7.08.03.00 201-2186-126-20070710) with ESMTP id <20081003125417.LWHW4798.mta31.charter.net@aarprv04.charter.net> for ; Fri, 3 Oct 2008 08:54:17 -0400 Received: from axs ([75.132.241.174]) by aarprv04.charter.net with SMTP id <20081003125417.GTGC3522.aarprv04.charter.net@axs> for ; Fri, 3 Oct 2008 08:54:17 -0400 X-Original-Message-ID: <004001c92557$283a1f50$6401a8c0@axs> From: "terrence o'neill" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Small tail vs. large tail X-Original-Date: Fri, 3 Oct 2008 07:54:21 -0500 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 X-Chzlrs: 0 Jim, Anyone research horizontal tail stall? Horizontal tails are almost always thin airfoils with small radius leading edges, which translates low AOA stall. Also, 'modern' horizontal tails are high aspect rastio, instead of the stubby WW I or Pitts type tails which have 3D flow and don't really stall. In a fully developed stall of the wing, I once experimented with tufting of the h-tail., and found the tail stalled a few degrees above the wing stall. The result was a slow nose-down recovery. Then I made slots on the h-tail's leading edge, and from a very high AOA stall the tail did NOT stall, and the stall recovery was -- fast. Some food for thought.... Terrence L235/320 N211AL Waiting for the DAR. ----- Original Message ----- From: "Jim Nordin" To: Sent: Thursday, October 02, 2008 08:12 PM Subject: [LML] Small tail vs. large tail > Measure the AOA of the horizontal stabilizer. Compare that to factory book > specs. A high angle would serve to reduce elevator effectiveness on the up > side. > Jim > > -----Original Message----- > From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of > Lorn > H Olsen > Sent: Thursday, October 02, 2008 8:33 AM > To: lml@lancaironline.net > Subject: [LML] Re: Small tail vs. large tail > > Bill, > > Elevator up and down are to book specifications. Some time in the next > couple of months, I will try to stop by when you are home and we can > do some inspecting. > > I would like to know why our planes fly so differently (if they really > do). > > Lorn > >> From: "Bill Harrelson" <5zq@cox.net> >> Date: October 1, 2008 10:54:35 PM GMT-04:00 >> >> Lorn, >> >> If you need 80 kts to get the nosewheel off the ground, sounds like >> you've got an elevator travel problem. Not necessarily a trim >> problem. Are you able to get the book specified deflection? >> >> Bill Harrelson >> N5ZQ 320 1,650 hrs >> N6ZQ IV under construction > -- > Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst > DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.us > LNC2, FB90/92, O-320-D1F, 1,470 hrs, N31161, Y47, SE Michigan > > > > > -- > For archives and unsub > http://mail.lancaironline.net:81/lists/lml/List.html > > > No virus found in this incoming message > Checked by PC Tools AntiVirus (4.0.0.26 - 10.072.012). > http://www.pctools.com/free-antivirus/ No virus found in this outgoing message Checked by PC Tools AntiVirus (4.0.0.26 - 10.072.012). http://www.pctools.com/free-antivirus/