More skyview displays

[rubber314chicken]

Skyview screens should come in more sizes/layouts. a 6.25" screen would be nice to put in a radio stack and always see a map or EMS. Something narrow and tall similar to a g3x display would be useful to do the same thing next to a 7" or 10"

 

[mtclay]

I second this idea, but in a slightly different direction.

For those of us with limited panel space (RV-8A) who choose to use a single 10" Skyview display there is a need for backup instruments for IFR capability should the primary display fail -- usually airspeed, attitude, and altitude.

One alternative is three steam gauges, but a better alternative is something like a D-6. Of course adding a D-6 is doable, but then you have two different technologies, extra wiring, two separate systems to update/troubleshoot, etc.

Particularly in a 2 AHRS installation, a "dumbed down" D-6 form factor Skyview screen that just plugs into the Skyview network would seem to make a lot of sense. Otherwise, the 2 AHRS installation does nothing to protect against primary screen failure.

 

[mmarien]

IMHO a redundant http://dictionary.reference.com/browse/redundancy system would have to be a bit more than two screens connected to the same system. I've seen more then a few stacked ADAHRS connected to the same pitot and static. You could have a dozen ADAHRS and they will all fail if the single pitot or static freezes shut. You can't just break the glass in the glass panel to get a second static source.

The whole idea of redundancy is independant systems including wiring/static/pitot/etc. to get rid of a single point of failure (eg: gas AI and electrical T&B). With that in mind I think the D6 (or G3X) would make a great backup system as long as it had a separate source of static and pitot, in addition to a independant electrical bus or at least a backup battery.

Now all you have to worry about is which system is telling the truth. If you want the system to figure that out I believe you have to add a third independant system to arbitrate.

 

[dabear]

I looked at the redundancy situation without looking at the need for second pitot static system. Hmmm I may have to rethink.

I have 2 SV in the front (1 in back pit) and 2 ADHARS. I figured if one went TU I could use the second. Both screens (3 actually) have battery backup for 60 min on the screen. therefore I didn't put in backup Alt/head/VS/etc.

I'm not flying hard/low IFR. Most flights are VFR but I want to be able to get up through and down through a cloud layer. If I put in a second pitot static system and ran it to the second ADHARS and considering the SV screens have battery, do I really need a second electrical system/Bus?

 

[mmarien]

The battery for each screen is independent of the other screens and electrical bus so that could be considered an independent electrical system. Your radios would be out of commission with an electrical failure although they have small backup batteries for that now.

I fly VFR but if I was thinking of IFR, I'd probably opt for a totally separate system like the D6/D10A or even a G3X. On the other hand I have a lot of faith in electronics so my current panel is a single SV/EMS/ADAHRS/COM. If it does quit I can fly VFR with my GPS495 and the big display out front. Probably not a good idea for IMC though.

 

[rubber314chicken]

More screens isn't about redundancy. Its about fitting more panel layouts and different uses. If you want more redundancy than the skyview offers, put a d6 with a backup battery in, separate from the skyview system. If you lose your electric system, you've still got both systems to get down. (and a handheld radio if you have one) If you lose one system, you've got the other to find an airport (and if you are IFR I'll bet you have either a 430/530W or some other GPS to navigate with) and land. That'd be a more redundant system than another screen in this system.

 

[rubber314chicken]

http://imgur.com/xsAXl

I threw this together rather quickly in gimp.  The screen is sized to be 5.5" wide and 9" tall. This would show approach plates full size, assuming the bars that show information at the top and bottom are each .25" tall.

The other idea I had was buttons on the right bezel like the 696 has. I thought that having all 8 buttons on the bottom would be tight, but I could be wrong about that (its just a bit more narrow than the 7" display).