From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: "gyro enhanced vertical speed"
To: lml
Date: Tue, 19 Dec 2006 01:47:51 -0500
Message-ID: <web-1689792@logan.com>
In-Reply-To: <101611.99509.qm@web34913.mail.mud.yahoo.com>
References: <101611.99509.qm@web34913.mail.mud.yahoo.com>
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Posted for bob mackey <n103md@yahoo.com>:

>  I am also not sure exactly what "gyro enhanced 
> vertical speed" means.  If someone has a good  
> explanation, I would like to hear it.
  
  I don't know what is in the guts of the TruTrak ADI,
  but I would guess that a more appropriate label
  is "accelerometer enhanced vertical speed".
  A single axis accelerometer can be used to
  provide a feedback signal to the display or
  vertical autopilot to help damp out turbulence
  and react much faster than the static-port derived
  vertical speed signal.
  
  If they really mean "gyro enhanced", then they may
  using gyro-based pitch measurements for the same
  purpose.
  
  It would be easy to figure out if you have the instrument
  powered up, but not bolted down. Just see if linear
  translation of the instrument up and down affects the
  display.