X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 29 May 2007 22:58:33 -0400 Message-ID: X-Original-Return-Path: Received: from smtp105.sbc.mail.mud.yahoo.com ([68.142.198.204] verified) by logan.com (CommuniGate Pro SMTP 5.1.9) with SMTP id 2073807 for lml@lancaironline.net; Tue, 29 May 2007 21:17:40 -0400 Received-SPF: none receiver=logan.com; client-ip=68.142.198.204; envelope-from=rfreilich@sbcglobal.net Received: (qmail 88957 invoked from network); 30 May 2007 01:17:03 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=sbcglobal.net; h=Received:X-YMail-OSG:From:To:References:Subject:Date:Message-ID:MIME-Version:Content-Type:X-Mailer:X-MimeOLE:Thread-Index:In-Reply-To; b=IQLZNeunGvJ92crxvC6QY3QAArjxvev2Plp4y3Jp35gBGgh4ZyxRFvemaHxbYq1N8IqXwaMgL45xqQQKc+eZTLDDfC837J6njKRz+N3zb6TnCMlEO3nSbTBWMRs262hcGjWcU0367gX87OWvfXsUQyLvuftcU0/wzJA0kFH1ZH0= ; Received: from unknown (HELO haliv) (rfreilich@sbcglobal.net@70.240.65.129 with login) by smtp105.sbc.mail.mud.yahoo.com with SMTP; 30 May 2007 01:17:03 -0000 X-YMail-OSG: KIQRghAVM1k2WHfSWJdwSi2f4FY3wgiTRN9NUXZOU5mm4CxIIFxBnztZXxApOvqgHP1oMjjWVw-- From: "Richard" X-Original-To: "'Lancair Mailing List'" References: Subject: RE: [LML] Tru Trak ADI vs. Standard AI X-Original-Date: Tue, 29 May 2007 20:17:02 -0500 X-Original-Message-ID: <020601c7a258$3ae841f0$6400a8c0@haliv> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0207_01C7A22E.521239F0" X-Mailer: Microsoft Office Outlook 11 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 Thread-Index: AceiEY5dgquVi3DKTX6wVsVWigqU8AAREkHA In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0207_01C7A22E.521239F0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit HELLO???? DOUGLAS???? Why are you spending big bucks on fancy glass and not paying attention to the basics? Add an AOA - independent of everything else (and high on the glareshield) and your original plan will be excellent! Why guess at low speed physics with your life in the balance. literally? Richard Freilich P.S. Lose a friend or two because of low speed maneuvering accidents (that could have been prevented) and you'll sound like a broken record also. _____ From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Douglas Brunner Sent: Tuesday, May 29, 2007 11:51 AM To: lml@lancaironline.net Subject: [LML] Tru Trak ADI vs. Standard AI My panel is a dual Chelton panel with 3 backup instruments; altimeter, air speed and Tru Trak ADI. I specified a Tru Trak ADI rather than a standard Attitude Indicator because of price and the fact that the Tru Trak could also show heading. In case of a failure of my dual Cheltons (hopefully very unlikely) I would still have; altitude, air speed, heading and attitude. However, I have been re-thinking my choice of the Tru Trak ADI for the following reason. The ADI does not display pitch, but instead displays "gyro enhanced vertical speed". In most situations the "gyro enhanced vertical speed" should parallel pitch. However in a situation close to stall speed, I could be nose up but descending. In this case the ADI (if glanced at quickly) could lead me to believe that I was nose down and should pull back on the stick. A standard Attitude Indicator would show me nose up and give me a better idea of the true situation. I spoke to the Tru Trak representative at Sun n Fun and he stated that there are stall warnings built in to the system and that I could "retrain" myself to interpret the ADI properly. Nevertheless, I am concerned that in a difficult situation, I would interpret the Tru Trak in the way I would a standard AI. Your thoughts and advice? A drawback to going with the standard AI is the loss of the heading information that the Tru Trak can provide. Of course, I would still have my wet compass. D. Brunner Legacy N241DB hoping to fly in June ------=_NextPart_000_0207_01C7A22E.521239F0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

HELLO????  DOUGLAS????

 

Why are you spending big bucks on = fancy glass and not paying attention to the = basics?

 

Add an AOA - independent of = everything else (and high on the glareshield) and your original plan will be excellent! =

 

Why guess at low speed physics with = your life in the balance… literally?

 

Richard = Freilich

 

P.S.  Lose a friend or two = because of low speed maneuvering accidents (that could have been prevented) and = you’ll sound like a broken record also.

 

From: = Lancair Mailing List = [mailto:lml@lancaironline.net] On Behalf Of Douglas Brunner
Sent: Tuesday, May 29, = 2007 11:51 AM
To: = lml@lancaironline.net
Subject: [LML] Tru Trak = ADI vs. Standard AI

 

My panel is a dual Chelton panel with 3 backup = instruments; altimeter, air speed and Tru Trak ADI. I specified a Tru Trak ADI rather = than a standard Attitude Indicator because of price and the fact that the = Tru Trak could also show heading.  In case of a failure of my dual = Cheltons (hopefully very unlikely) I would still have; altitude, air speed, = heading and attitude. 

 

However, I have been re-thinking my choice of the Tru = Trak ADI for the following reason.  The ADI does not display pitch, but = instead displays "gyro enhanced vertical speed".  In most = situations the "gyro enhanced vertical speed" should parallel pitch.  = However in a situation close to stall speed, I could be nose up but = descending.  In this case the ADI (if glanced at quickly) could lead me to = believe that I was nose down and should pull back on the stick.  A standard Attitude Indicator would show me nose up and give me a better idea of = the true situation. 

 

I spoke to the Tru Trak representative at Sun n Fun = and he stated that there are stall warnings built in to the system and that I = could "retrain" myself to interpret the ADI properly.  = Nevertheless, I am concerned that in a difficult situation, I would interpret the Tru = Trak in the way I would a standard AI.  Your thoughts and = advice?

 

A drawback to going with the standard AI is the loss = of the heading information that the Tru Trak can provide.  Of course, I = would still have my wet compass.

 

D. Brunner

Legacy N241DB

hoping to fly in June

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