OK I get the feeling nobody is going to guess what I have in mind.

Absolutely the cheapest way to do an EFIS is use voice synthesizing
technology.  No expensive LCD, LED or PDA at all.
Although bar graph LEDs are a very cheap way to go but they do take
up space on the instrument panel and suck power.

Everybody that flies an airplane has a head set.

"Your EGT on rotor one is 1400 degrees."
"Your EGT on rotor two is 1450 degrees."
"Your coolant temp is 220 degrees."
"Your oil pressure is 80 psi."
"etc., etc., etc.."

You could push one of several buttons each with different info on
the stick or on the instrument panel to get the info when you
wanted it or allow the system to inform you when something went
out of preset limits. If something started changing too
fast it could warn you automatically.

It could also work as a stall warning.

"PUSH THE STICK YOU ARE GOING TO STALL!"
"PUSH THE STICK YOU ARE GOING TO STALL!"
"PUSH THE STICK YOU ARE GOING TO STALL!"


The possibilities are infinite. The cost and panel space are minimal.

http://www.rcsys.com

Paul Lamar

Just my 2 cents worth.

But I would go crazy with an airplane that continually nagged my via the
head set.

Remember the Chrysler cars of the 80's that told us: "Your door is a jar".
Ding!  Your door is a jar"?

I'd much rather tie in with my iPac (running Linux of course).

Rob Barnard

Rob, keep reading. There are buttons for on demand. It does not
continually nag you unless you want it to nag you.

Paul Lamar
 
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