X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 10 Jan 2009 18:23:17 -0500 Message-ID: X-Original-Return-Path: Received: from smtp6-g21.free.fr ([212.27.42.6] verified) by logan.com (CommuniGate Pro SMTP 5.2.11) with ESMTP id 3418799 for lml@lancaironline.net; Fri, 09 Jan 2009 15:35:33 -0500 Received-SPF: none receiver=logan.com; client-ip=212.27.42.6; envelope-from=alainoireaux@free.fr Received: from smtp6-g21.free.fr (localhost [127.0.0.1]) by smtp6-g21.free.fr (Postfix) with ESMTP id CC83FE081DB for ; Fri, 9 Jan 2009 21:34:52 +0100 (CET) Received: from [82.233.128.177] (lam60-1-82-233-128-177.fbx.proxad.net [82.233.128.177]) by smtp6-g21.free.fr (Postfix) with ESMTP id AD774E08135 for ; Fri, 9 Jan 2009 21:34:49 +0100 (CET) X-Original-Message-ID: <4967B4E9.4010006@free.fr> X-Original-Date: Fri, 09 Jan 2009 21:34:49 +0100 From: alain Noireaux User-Agent: Thunderbird 2.0.0.6 (X11/20071022) MIME-Version: 1.0 X-Original-To: Lancair Mailing List Subject: Re: [LML] Re: LNC2 AOA Pitot tube location? References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------060503010803060906070209" This is a multi-part message in MIME format. --------------060503010803060906070209 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Chris ; I am interested too with the location of the Dynon AOA probe on a L320. Let's all LML fellows to know the answer you'd get from Dynon or anyone else . Alain Noireaux L320 F-PSDV Robert Pastusek a écrit : > > Chris Skelt wrote: > > > > I was persuaded by the arguments cited on the List in favor of an AOA > indicator and just received a Dynon AOA Pitot tube to replace the > standard AN5812. It's 2 1/4 inches longer than the AN5812, and so > sticks out a couple of inches in front of the leading edge. In the > installation instructions Dynon recommend that the > tip should be between 2 and 12 inches aft of the leading edge, which > would mean I need to move the mount aft to outboard of the gear doors. > This would be a pain, and would also result in a longer and circuitous > route for the pitot and AOA plumbing, as would mounting it at the > wingtip, etc... > > > > I don't believe I'm the first to retrofit an AOA probe, so does anyone > have views or experience on whether it would function well > aerodynamically? > > > > > > Chris, I have this system installed in my Lancair IV-P, and have been > very pleased with its performance---except for a computer > failure---which Advanced Flight Systems replaced under warranty. I > believe having the pitot tube extend forward of the wing leading edge > will not affect its performance, and may, in fact, improve it. Not > being an authority on such, however, I'd suggest that you call Rob > Hickman at Advanced, (503) 263-0037, or email > info@advanced-flight-systems.com > about this. I've found them > to be most helpful and am sure they'd be willing to discuss. > > > Good Luck; your decision to use an AOA is a good one! > > > Bob > > > > > --------------060503010803060906070209 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Chris ;

I am interested too with the location of the Dynon AOA probe on a L320.
Let's all LML fellows to know the answer you'd get from Dynon or anyone else .
Alain Noireaux L320 F-PSDV

Robert Pastusek a écrit :

Chris Skelt wrote:

I was persuaded by the arguments cited on the List in favor of an AOA indicator and just received a Dynon AOA Pitot tube to replace the standard AN5812. It's 2 1/4 inches longer than the AN5812, and so sticks out a couple of inches in front of the leading edge. In the installation instructions Dynon recommend that the tip should be between 2 and 12 inches aft of the leading edge, which would mean I need to move the mount aft to outboard of the gear doors. This would be a pain, and would also result in a longer and circuitous route for the pitot and AOA plumbing, as would mounting it at the wingtip, etc...

I don't believe I'm the first to retrofit an AOA probe, so does anyone have views or experience on whether it would function well aerodynamically?

Chris, I have this system installed in my Lancair IV-P, and have been very pleased with its performance—except for a computer failure—which Advanced Flight Systems replaced under warranty. I believe having the pitot tube extend forward of the wing leading edge will not affect its performance, and may, in fact, improve it. Not being an authority on such, however, I’d suggest that you call Rob Hickman at Advanced, (503) 263-0037, or email info@advanced-flight-systems.com about this. I’ve found them to be most helpful and am sure they’d be willing to discuss.

Good Luck; your decision to use an AOA is a good one!

Bob

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