Mailing List lml@lancaironline.net Message #39059
From: Marvin Kaye <marv@lancaironline.net>
Subject: Re: "gyro enhanced vertical speed"
Date: Tue, 19 Dec 2006 01:47:51 -0500
To: <lml>
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.
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