Re: embedded aviation computers.

["D.F.S." <dfs@xmission.com>]

> 
> "D.F.S." wrote:
> <snipp>
> > 
> > Either way I'm looking at about $200-250.00 for all the hardware
> > for a kick-butt Flight management system using fairly standard
> > and compatible PC make from common and cheap parts.
> > 
> > Comments?
> 
> All this sounds great, for a custom system you build yourself and it
> sits in the right seat.  The problem with this would be if you market
> these things as flight directors or tried to get it "built in" or
> something.  If you build it, an A&P is not going to be that willing to
> install it.  Without a demonstration to the FAA and their approval, I
> doubt you will get it IFR certified.. No insurance company would touch a
> non certified flight director for libality coverage.  But if you are
> targeting the home built folks, and sell your rig as a kit that must be
> assembled....
> 
> I'd bet, that you could easily obtain VOR/ILS, NDB, and GPS inputs (if
> not actually build them yourself) from existing comerical equipment. 
> Then building the necessary nav display for a HSI or VOR would be a
> snap.  It would be neat to have a fully functional HSI display in your
> C152 that you could use to fly approaches, but...

Maybe I was not clear on this, I don't intend to sell anyting.
I don't intend to certify anything.
Years ago I looked into getting approval to install something like this
for test and R&D purposes before moving to certification, even TAH was
an incredible pain in the butt, and require releasing my airworthiness
certificates and getting approval before each flight.
This is for my own amusement, nothing more.
I thought at least some of the people here were looking in the same 
direction.

> Why not just do all this on a lap top?  Why bother with all the
> electronics part when you can just hook a GPS to a laptop and be done
> with it.
I have tried, I have decided laptops without severe modifications suck
in the cockpit. They are unweildy and don't "Fit" anyplace.
Removing the screens and building a longer cable should be possible
and accomplish the same task. The cables are almost always the flexible
types with the unobtainable connectors and horrible EMI (Interference)
problems.

The system I mentioned could be stuffed out of the way. The display
and physical interface, ie. trackball and pushbuttons could be
yoke and display face mounted.

> 
> Do you beielve it would be possible to have dual displays, driven by
> this box of yours?
Yes.
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