REFLECTOR:Re: Dynon & EFIS systems
velocity xl
reflector@tvbf.org
Sat, 11 Oct 2003 18:04:18 -0600
"maximum roll rate problem that will scramble it."
They said at Oshkosh that it had a roll rate of 150 deg a second but once
you stopped the roll it came right back, That does not sound like a problem
to me in a velocity. Maybe in an RV or other more acrobatic air craft. But I
don't know I am not fling YET
Ron
----- Original Message -----
From: "Wayne Lanza" <wlanza@bellsouth.net>
To: <reflector@tvbf.org>
Sent: Saturday, October 11, 2003 1:14 PM
Subject: REFLECTOR:Re: Dynon & EFIS systems
> I have followed the Dynon project for the past couple of years and am
> not impressed.
> We watched a unit at Sun-N-Fun and Oshkosh roll over while not in
> motion. When I
> quietly asked about this precess issue I got a few dirty looks and got
> a response like
> 'it really didn't do that'... there is also a maximum roll rate problem
> that will scramble it.
> They are relying on solid state rate sensors that will average somewhat
> OK if the unit
> is moving around, but apply a continuous lateral force, i.e. a turn, or
> NO movement
> and it will tumble.
> The Digifly uses a three axis magnetometer and three axis of both
> linear and angular
> accelerometers, the Blue Mountain system employs a similar solution.
> I'm not sure about
> the Grand Rapids, but it is supposed to be OK.
> Cards on the table - I represent Digifly and am also good friends with
> Greg Richter from
> Blue Mountain. Digifly is an old Italian company that has manufactured
> color map/GPS/efis
> systems for over ten years. Our AHARS is now three years old and cannot
> be tumbled -
> that's a bold statement and it's the truth. After 6 months experience
> with the Blue Mountain
> in the Velocity Dash 5 airplane, I have to say that Greg has done a
> great job with the design.
> Another gotcha with an EFIS is sunlight viewing, don't take anything
> less than a first hand
> opportunity to see on in the direct sunlight - not a lamp or flash
> light!
> I have a triple screen Digifly fms100 system in my Velocity, if you
> are by the factory please
> talk with me for a comprehensive demonstration.
>
>
> Fly Safe & Best Regards,
> Wayne Lanza
> Composite Design, Inc.
>
> visit our web site at: http://www.CompositeDesignInc.com
>
>
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