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-   -   GRT Avionics Aircraft Mounted Heads-Up Display (https://vansairforce.net/community/showthread.php?t=151658)

John Owen 12-30-2017 09:54 AM

AFS connectivity
 
I wonder if my AFS 5600 or Dynons could be made to BT data (IAS, altitude and command bars for example) to the HUD? That would be a great tool.

BHunt 01-01-2018 08:45 PM

If it does iPhone mirroring, couldn?t you just use any of the syn vis displays in the EFBs? Like WingX or Aerovie?

deej 01-02-2018 08:25 AM

Quote:

Originally Posted by BHunt (Post 1229188)
If it does iPhone mirroring, couldn?t you just use any of the syn vis displays in the EFBs? Like WingX or Aerovie?


You can display anything, including Google Maps if you wanted to. :-)

I have the original Hudly in my truck, and it simply displays whatever is on the iPhone screen.

-Dj

BHunt 01-02-2018 04:43 PM

Just ordered 2 on kickstarter

Ironflight 02-06-2018 09:31 PM

The GRT HUD is Great!
 
I finally got a chance to connect with Greg on a demo HUD, and installed in the RV-8 last week. I had a nice long flight into a wicked headwind up to Yakima the Sunday (and an equally delightful flight back with a GREAT tailwind yesterday) to play with the unit, and I am impressed! For those who have flown Boeing (or military) HUD's before, the symbology will be familiar, and I found that I was hardly looking down at the EFIS screens for anything but engine parameters. The velocity vector helped me know where I was going by looking at the REAL world, not the synthetic vision, and he's got some other cool features in the software as well.

It's really a perfect fit in the RV-8, and I'm looking forward to further exploring its capabilities.

I did a brief write-up on the magazine web site the other day about it:

https://newsline.kitplanes.com/2018/02/04/huds-up/

If you've got a GRT EFIS, this thing is a really cool addition to the airplane!

Paul

painless 02-07-2018 09:06 AM

Paul, just curious. Did Greg make any comments on the new wireless hudly that is due out in March? He has posted on GRT?s site that it will be supported, but I?m curious if he has had a chance to evaluate a preproduction example and how it will behave in an aviation environment. It?s a self contained unit that sits on the dash, no separate projector and screen.

Ironflight 02-07-2018 09:32 AM

Quote:

Originally Posted by painless (Post 1237716)
Paul, just curious. Did Greg make any comments on the new wireless hudly that is due out in March? He has posted on GRT’s site that it will be supported, but I’m curious if he has had a chance to evaluate a preproduction example and how it will behave in an aviation environment. It’s a self contained unit that sits on the dash, no separate projector and screen.

He didn’t mention it to me. I am using a stick pc to run the app and drive the Hudly. Wireless would be nice to clean things up in the cockpit, but frankly, I have so many pieces of stuff I am testing that it’s a rats nest already - so what’s a couple more wires? :rolleyes:

Paul

catmandu 05-03-2018 05:49 AM

Quick look at the next generation Hudly Wireless interfacing with my GRT Sport SX in my tipup -6A:





Still experimenting with mounting geometry and such, hoping to have a single mount capable of adapting to different lines of sight, depending on pilot seated height.

It is taking some effort to wrap my brain around the lack of infinity focus. I am trying not to be like the Boeing test pilots ("How do I turn it off?").

Of note, the MHL requirement no longer limits your hardware options, I am temporarily using a Galaxy S7 Edge and it's Smart View capability to cast the image from the GRT App in HUD mode. $28 compute stick is on the way from China.

More later as I figure things out.

painless 05-03-2018 07:30 AM

Mike

I have a computer stick I?m using with my setup. Trouble I?m having is that every time I reboot the Hudly, it asks for the screen from the Android device be cast to it. I can only do that if a monitor is connected to the computer stick. I?m using an RKM V5. Couldn?t find a default setting to do this either.

Am I missing something? Wouldn?t be the first time...

What I have found that I can do is remove the WiFi dongle on the Hudly and then hardwire the computer stick to the Hudly via a HDMI extension cable.

Snowflake 05-03-2018 07:34 AM

My Hudly arrived last week but i've been too busy lately to spend much time with it yet... I did get out for a drive with it to give a quick test. Two things came to mind after driving with it:

1. The "infinity focus" that was supposed to be "like having a screen 6' away on the hood of the car" is laughable. The focusing distance is about 2-3" behind the half-silvered reflector.

2. Given that there are no special optics to get an "infinity" display, I don't see why this is better than just having the half-silvered mirror on its own, and placing your cell phone below it instead. That way you don't have to pair anything. It would require OS-level support for reversing the screen, which Android has hooks for... Not sure about iOS.

That said, having Google Maps playing while I was driving was quite nice (my car doesn't have satnav, and if it did it would be down out of sight where the radio is). I don't have a GRT so i'm looking for a good HUD app to try in flight.

Snowflake 05-03-2018 07:39 AM

Quote:

Originally Posted by painless (Post 1257293)
What I have found that I can do is remove the WiFi dongle on the Hudly and then hardwire the computer stick to the Hudly via a HDMI extension cable.

This may be a better solution if you're going to mount it permanently in the cockpit anyway. I found the display connection dropped out three times on a half-hour drive because my phone found a stronger WiFi signal that it recognized along the way. WiFi may not be the best way to make this connection if the unit connecting is a phone. Getting the phone to use the Cell signal for data and the WiFi signal for the screen is no small feat either.

Ron77 05-03-2018 08:39 AM

New Hudly
 
The new wireless Hudly has a computer stick plugged into its HDMI port. Does it make sense to load the GRT app directly onto this stick?

Ron B.

svyolo 05-03-2018 09:06 AM

I flew 18's a long time ago. It had HUD which was a pleasure to fly off of. But it was focused to infinity. About 4 years ago I was in a different airlines simulator flying a 737 with a HUD (ours don't have HUD's). I used it for a few landings.

There was something that bothered me about it that made it uncomfortable to use. I finally realized that it was focused a few feet in front of the windscreen. The F-18's was focused to infinity.

The airline HUD's are used primarily for CAT III approaches. I haven't seen that many pilots use them for anything else. I am sure there is a reason Boeing chose the focus they did, but it made it uncomfortable to use for normal flying.

Is the HUDLY focused at infinity, or a short distance?

catmandu 05-03-2018 09:14 AM

Quote:

Originally Posted by svyolo (Post 1257319)
Is the HUDLY focused at infinity, or a short distance?

Short distance, not sure the exact number. And no AOA as of yet, thus my unease, twice over.

Snowflake 05-04-2018 07:54 AM

Quote:

Originally Posted by svyolo (Post 1257319)
Is the HUDLY focused at infinity, or a short distance?

Short distance. Not more than 3-4 inches past the half-silvered mirror. In my car, the distance is about where the windshield is. That puts the content about 6-8" further away from me than the dashboard, so it's *less* work to refocus, but it's still very close.

The only benefit I see is that when using it for a map or something, you don't have to look away from the road to see it... You refocus on it to see content, but your peripheral vision still picks up movement around it. Not as good as not having to re-focus, but better than looking down at the dash.

Canadian_JOY 05-04-2018 06:00 PM

Perhaps I missed it in an earlier post - if so, please accept my apologies for duplication.

http://grtavionics.com/kivic-and-epi...now-supported/

GRT now supports other HUDS, including one focused at infinity, the Epic.

maniago 05-04-2018 06:20 PM

Quote:

Originally Posted by Canadian_JOY (Post 1257695)
Perhaps I missed it in an earlier post - if so, please accept my apologies for duplication.

http://grtavionics.com/kivic-and-epi...now-supported/

GRT now supports other HUDS, including one focused at infinity, the Epic.

wow......~$200 and ~$2k....thats some spread......

painless 05-05-2018 07:20 AM



Initial install of my Hudly wireless, except I have it hardwired to my computer stick with an HDMI cable.

Haven't completed it yet, but I plan to velcro the unit to the glare shield in its current position. The Hudly comes with a slick pedestal mount that would adapt to car dashes very well, but seems to me would be prone to vibration in an aviation environment.

Hope to fly behind it soon.

"That's Hudly.......Hudly Lamar!" :D

rv8ch 05-05-2018 01:22 PM

AOA on HUD
 
Quote:

Originally Posted by painless (Post 1257768)
"That's Hudly.......Hudly Lamar!" :D

Love it!

I really hope that they add the AOA - that's the critical bit of info to have in the HUD during landing.

Sam Staton 05-06-2018 01:17 AM

GRT app
 
Dumb question-does the GRT app work stand-alone, or does it require the GRT glass panel? I am Dynon-specific, but have received my Hudly. Trying to figure out how to use it in my bird.

Sam Staton 05-06-2018 01:24 AM

Dumb question answered
 
Sometimes it helps to read all of the posts in a thread. Looks like until Dynon follows GRT?s lead I am SOL. Oh well, I can use it in the car until then DYNON - ARE YOU LISTENING?

maniago 05-09-2018 03:55 AM

Maybe they'll get in the game, but I dunno. When GRT was playing with GoogleGlass etc, I asked the Dynon guys if they were going to do the same and got a flat no way - dont believe in it. Of course that went out the window, and GRT started playing with and talking about HUDs. And still nothing from Dynon. I slowly came to the conclusion that Dynon that once was forward looking, have gotten big and slowed/stagnated their development. Maybe not true, but just a gut feel. So I went out and bought a full suite of GRT. Works good for me, and totally happy to be tied to a company that continues to tinker with cutting edge stuff.

svyolo 05-09-2018 11:59 PM

Having been taught to fly, and then flew, AOA as a primary performance instrument, I will have an AOA on my plane (Bearhawk). I wish I could talk one or more of the EFIS manufacturers to do a software AOA. Everything you need to do a really nice AOA is already in the little black boxes. No air data required. The "real" AOA we used to use in the military was useful at an airspeed way above what EAB aircraft fly and land at. At the speeds we fly, it might actually work better, although I have zero experience flying an EAB with air data derived AOA.

AHRS has all the info you need for a really nice, functional AOA. The companies that make it just don't know it. I use it all the time at work, albeit not in a dynamic environment. Once or twice a year I use it in the sim, and the instructors can't figure out how I do it. But it is all there. I just have the experience using the info. it is not talent.

I will try to make Oshkosh this year for the first time since the early 80's. I will try to talk a couple of the companies into offering it.

rv8ch 05-10-2018 12:18 AM

GRT Synthetic AOA
 
Quote:

Originally Posted by svyolo (Post 1258896)
... I wish I could talk one or more of the EFIS manufacturers to do a software AOA. Everything you need to do a really nice AOA is already in the little black boxes. No air data required. ...

I will try to make Oshkosh this year for the first time since the early 80's. I will try to talk a couple of the companies into offering it.

GRT does this.

http://www.vansairforce.com/communit...ad.php?t=39700

Canadian_JOY 05-10-2018 07:24 AM

As Mickey pointed out, GRT has had "derived AoA" for ages. Now they also do "sensed AoA".

When I was updating our AHARS I opted to add the AoA sensor and enjoy flying with it.

maniago 05-10-2018 07:34 AM

Quote:

Originally Posted by svyolo (Post 1258896)
Once or twice a year I use it in the sim, and the instructors can't figure out how I do it. But it is all there. I just have the experience using the info. it is not talent.

Yup. GRT has had it for years and even touted it......but they silently discovered that it wasnt quite as accurate or as fast as it needed to be, so they added sensed AOA which bullet proofed their calculations. Afterall, most folks will rely on it in landing configurations and having it dead nuts on is obviously critical.

I am curious about how you derived it using other instruments tho. Thats a piece of learning I'd seriously like to have in my tool box.


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