X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 13 Jan 2010 08:19:04 -0500 Message-ID: X-Original-Return-Path: Received: from [70.62.14.124] (HELO ustek.com) by logan.com (CommuniGate Pro SMTP 5.3.1) with ESMTP id 4081023 for lml@lancaironline.net; Wed, 13 Jan 2010 06:56:20 -0500 Received-SPF: pass receiver=logan.com; client-ip=70.62.14.124; envelope-from=r.simon@ustek.com Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01CA9447.A81C5B60" X-MimeOLE: Produced By Microsoft Exchange V6.5 Subject: RE: angle of attack X-Original-Date: Wed, 13 Jan 2010 06:58:01 -0500 X-Original-Message-ID: In-Reply-To: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: angle of attack Thread-Index: AcqUR6fX49lPltQCSD+5uR2f258BRQ== References: From: "Lancair" X-Original-Sender: "Robert Simon" X-Original-To: , This is a multi-part message in MIME format. ------_=_NextPart_001_01CA9447.A81C5B60 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Jeff, =20 If you or any other Lancairian develops a circuit board for an AoA or other device, send me a note and the Gerber files and I will get you boards for next to zip. =20 Robert M. Simon ES-P N301ES (fitted with AoA by Proprietary Software Systems, Inc. ) ________________________________ From: marv@lancair.net [mailto:marv@lancair.net]=20 Sent: Tuesday, January 12, 2010 7:44 PM To: lml@lancaironline.net Subject: Re: angle of attack Posted for Jeff Peterson : If you are interested in homebuilt angle of attack systems you might want to read this thread on rec.aviation.homebuilt =20 =20 http://groups.google.com/group/rec.aviation.homebuilt/browse_thread/thre ad/bc8acb7472d0698e/dfc062e386e86a01?hl=3Den&lnk=3Dgst&q=3Dangle#dfc062e3= 86e86 a01 =20 I was surprise how many people are interested in the subject. =20 before building your own it pays to look at the variety of commercially available system out there. Two that use differential pressure systems are =20 Advanced Flight Systems and Alpha Systems. =20 and several efis units now include some kind of AOA. =20 I have not flown with any of these but have collected a few opinions: The audio beep output of the Alpha is very effective...gives continuous feedback during any high AOA operation, but with eyes outside. The Alpha LED display looks cheap and clumsy (my opinion). The AFS unit is cumbersome to set up in the cockpit and requires probes built in to the wing. The AFS Pro display looks quite nice but is also pretty large. =20 =20 =20 I did breadboard my own design which has heartbeat audio feedback, and a smaller display that either of either these units. I plan to use the Dynon heated Pitot/AOA probe. My own work is not well enough along for me to post schematics. I will post, if I get it working well. =20 Cheers, =20 --=20 Jeff Peterson LNC2 N273CK ------_=_NextPart_001_01CA9447.A81C5B60 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Jeff,

If you or any other Lancairian develops a = circuit board=20 for an AoA or other device, send me a note and the Gerber files and I = will get=20 you boards for next to zip.

Robert M. Simon

ES-P N301ES (fitted with AoA by Proprietary Software Systems, Inc.=20 )

From: marv@lancair.net = [mailto:marv@lancair.net]=20
Sent: Tuesday, January 12, 2010 7:44 PM
To:=20 lml@lancaironline.net
Subject: Re: angle of=20 attack

Posted for Jeff Peterson=20 <jeffreyb.peterson@gmail.com>:

If you are interested = in=20 homebuilt angle of attack systems
you might want to read this = thread on=20 rec.aviation.homebuilt

http://groups.google.com/group/= rec.aviation.homebuilt/browse_thread/thread/bc8acb7472d0698e/dfc062e386e8= 6a01?hl=3Den&lnk=3Dgst&q=3Dangle#dfc062e386e86a01

&n= bsp;I=20 was surprise how many people are interested in the=20 subject.

before building your own it pays to look at=20 the
variety of commercially available system out = there.
Two=20 that use differential pressure systems are

Advanced = Flight=20 Systems and
Alpha Systems.

and several efis = units=20 now include some kind of AOA.

I have not flown with = any of=20 these but have collected a few opinions:
The audio beep output = of the=20 Alpha is very effective...gives continuous
feedback during any = high AOA=20 operation, but with eyes outside.
The Alpha LED display looks = cheap and=20 clumsy (my opinion).
The AFS unit is cumbersome to set up in = the=20 cockpit and requires probes
built in to the wing.
The = AFS Pro=20 display looks quite nice but is also pretty=20 large.

I did breadboard my own = design=20 which has heartbeat audio feedback,
and a smaller display that = either=20 of either these units. I plan to use the
Dynon heated Pitot/AOA = probe.
My own work is not well enough along for me = to
post=20 schematics. I will post, if I get it working=20 well.

Cheers,

--
Jeff=20 Peterson
LNC2 N273CK

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