(Attached) GDL39 (3d) w/ Attitude AHRS vs Steam Gauge

phillipny

phillipny

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phillipny
We've been testing the new GDL 39 (3d model) and are very impressed with it. Pics below

It pairs with the Garmin Pilot app to provide an artificial Attitude indicator, which could really save your butt in an IMC instrument failure.

In a very preliminary first pass with the device, we're very impressed with it. The unit can be calibrated for level flight and then tracks seamlessly with the plane. We found the error rate to be +/- 1 degrees but thats it. Tracks smooth and instantly.

The key with the AHRS is to calibrate the GDL39 when it is in true level flight, at cruise or on true level taxi way. Easy to calibrate in the Garmin menu/Pilot app.

Pics and Videos below, and more to come

http://switchboxcontrol.com/news/2014/2/1/gdl39-3d-w-attitude-ahrs-vs-steam-gauge

GDL39_3d.jpg
 
phillipny said:
We've been testing the new GDL 39 (3d model) and are very impressed with it. Pics below

It pairs with the Garmin Pilot app to provide an artificial Attitude indicator, which could really save your butt in an IMC instrument failure.

In a very preliminary first pass with the device, we're very impressed with it. The unit can be calibrated for level flight and then tracks seamlessly with the plane. We found the error rate to be +/- 1 degrees but thats it. Tracks smooth and instantly.

The key with the AHRS is to calibrate the GDL39 when it is in true level flight, at cruise or on true level taxi way. Easy to calibrate in the Garmin menu/Pilot app.

Pics and Videos below, and more to come

http://switchboxcontrol.com/news/2014/2/1/gdl39-3d-w-attitude-ahrs-vs-steam-gauge

GDL39_3d.jpg
Click to expand...

You have all the great toys: an airplane, the 796, an iPad, Garmin's Pilot App, the GDL39 3D and Garmin's new camera.

How does the ADS-B WX and traffic work on both the 796 and iPad?

Shame Garmin didn't allow the AHRS to work with the 796. Maybe it will on a future software update.
 
Seems stupid as can be. Why the hell would they simulate a six pack rather than provide SVT? WingX has it beat by a mile.
 
Henning said:
Seems stupid as can be. Why the hell would they simulate a six pack rather than provide SVT? WingX has it beat by a mile.
Click to expand...

Good point, but a better one might be, why don't they offer the six pack and SVT as display options?

The whole idea of the AHRS in the GDL39 is so it can be used in an emergency. I don't think during an emergency it would be a good idea to present a distressed pilot with a display they're not used to.
 
Is it just me or are you really about to have a mid-air with a furby?

(what is that pink/blue thing)
 
Ha. No comment on the furby. Ha
 
drgwentzel said:
Good point, but a better one might be, why don't they offer the six pack and SVT as display options?

The whole idea of the AHRS in the GDL39 is so it can be used in an emergency. I don't think during an emergency it would be a good idea to present a distressed pilot with a display they're not used to.
Click to expand...

There's no "getting used to" an SVT display. Besides, if you have it daily, you'll be used to it when the time comes.
 
Henning said:
Seems stupid as can be. Why the hell would they simulate a six pack rather than provide SVT? WingX has it beat by a mile.
Click to expand...

That puzzled me as well...maybe a decision made by lawyers?
 
SVT is coming...

http://www.flyingmag.com/avionics-gear/portablehandhelds/we-fly-garmin-gdl-39-3d

Right now the display is of steam gauges, but Garmin plans in the near future to roll out a synthetic-vision version that will closely approximate its panel-mount PFD products. As with the previous-gen GDL 39, the 3D version integrates beautifully into Garmin Pilot, so all of the ADS-B weather products available, from Nexrad to winds aloft, are available on airport information pages, on the moving map and on dedicated weather pages.
 
weirdjim said:
Why does the steam altimeter show 3450 and the pad 3250? Why does the steam VSI show 300 f/m up and the pad 0?

Jim
Click to expand...

Altimeter is based on the Kohlsman window, and all consumer GPS, including the iPad, are based on a standard datum plane, which is an appoximation of the earth's surface. Garmin uses the wGS 84' iirc.
 
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murphey said:
Altimeter is based on the Kohlsman window, and all consumer GPS, including the iPad, are based on a standard datum plane, whichnis an appoximation odnthe earth's surface. Garminuses the wGS 84' iirc.
Click to expand...

Which means?
 
Garmin will roll out the SVT version and charge another $100 for it . . . Garmin does nothing for free. . . even if it costs virtually nothing to design . . .
 
Jhernandez04 said:
Which means?
Click to expand...
Here's a longer explanation but basically it means that GPS altitude measures altitude above a datum (WGS84) while altimeter altitude is measuring pressure which is then converted to an altitude. If the atmosphere is not standard there will be errors, especially due to the temperature of the column of air below the airplane. We usually only care about this with regard to obstacle clearance (the whole high to low, hot to cold, look out below saying). It's also the reason why you want the current local altimeter setting especially when shooting an instrument approach since the altimeter setting obviously changes over time and location.

http://www.borgeltinstruments.com/GPSvsPressurealtitude.pdf
 
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