The solidstate ring "gyros" (a laser beam) on the newer versions of the INS
platforms are actually three. Two at work (for instantaneous failure of one)
and a third which watches the other two and 'tosses out' one which disagrees
more than a set standard, and replaces it, Praps one could make that ten
cheap gyros and dump the mechanism if two go doodoo - with a suitable red
led to advise of course. All digital logic, natch.
Ferg
----- Original Message -----
From: Tom & Cathy Friedland <tfriedland@home.com>
<grahamclk@aol.com>; <europa@avnet.co.uk>
Subject: Re: MEMS
> Brian
>
> How hard would it be to use your "cheap rate gyros" to use as sensors for
a simple wing leveler autopilot that would control a MAC servo on the
aileron trim?
>
> Tom Friedland A 079 mono J3300
>
> Brian Rauchfuss - PCD wrote:
>
> > > I quote New Scientist: tiny chip-sized micro-electromechanical systems
include gyroscopes, tilt sensors and accellerometers which can be bought off
the shelf and plugged in , made in a similar way to silicon chips so they're
cheap. Now why do I have to have a bloody great suction pump and a tonnage
of whirling dervishes in my dashboard just to get the same information? I
could now surely put my flight simulator software to good use and have an
image on my palm-top in the cockpit just like the one on my play-screen,
which , with input from the Garmin, is topographically correct and visually
corresponds to the attitude, speed, etc of the aircraft. All for a few bob.
What's wrong with the world - the technology exists and is cheap and we
haven't got it. Woe!.....h
> >
> > Unfortunately, the cheap chip-gyros are not very accurate, and the
accurate
> > chip gyros are very expensive. You can get some very nice, cheap rate
> > gyros which are good for the turn-and-bank indicator (as seen in the
NavAid
> > autopilot) ... but they drift far too fast to be useful for the attitude
> > indicator. You can get some very accurate laser-ring-gyros which will
work
> > for the attitude (as seen in the Sierra Flight Systems display), but
they are
> > very expensive.
> >
> > Maybe soon the chip gyros will become more accurate ... I sure hope so!
> >
> > Brian
>
>
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