HUD

[Mottley[_2_]]

Any bets on how long it will be before these units find their way into
our cockpits??
http://www.slashgear.com/brothe-airscouter-projects-16-inch-screen-right-on-your-eyeball-17103012/

[kirk.stant]

On Dec 13, 9:37*am, Mottley > wrote:
> Any bets on how long it will be before these units find their way into
> our cockpits??http://www.slashgear.com/brothe-airscouter-projects-16-inch-screen-ri...

The key to a HUD (and the reason they are so expensive) is that the
image and symbology is focussed at infinity, so the eye doesn't have
to refocus to see it. If you just put an image 3 feet in front of the
eye and read it, you now have to refocus at long distance to see
anything else. Not much better than just looking in the cockpit, and
potentially much worse, if the eye is constantly looking at that close
image.

If this device allows the image to appear at infinity, then it has
potential.

Kirk

[bildan]

On Dec 13, 8:37*am, Mottley > wrote:
> Any bets on how long it will be before these units find their way into
> our cockpits??http://www.slashgear.com/brothe-airscouter-projects-16-inch-screen-ri...

It's not a HUD it's a HMD or "Head or Helmet Mounted Display". It
belongs to a subset of these devices called "retinal display" which
projects a perfectly focused image onto your retina using microwatt
lasers which eliminates any presbyopia problems the user might have
and keeps the display in sharp focus regardless of where the user's
eye is focused. The "See Through" feature causes the projected image
to be overlaid on a real world view. The brightness is high enough to
work great in direct sunlight while using tiny amounts of power.

The University of Washington has been working on this concept since
the 1980's. Do they work? Absolutely.

For them to be practical in gliders, I think they would have to be
linked to a PTL (Push to Look) button on the stick which rotates the
projector into viewing position when pushed and rotates it out of the
way when the button is released.

These devices could eliminate the "screen real estate" and sunlight
viewing problems which has plagued glide computers.

One might imagine FLARM traffic data overlaid on the outside world.

[Steve Rathbun]

"Use the Force Luke"

http://www.youtube.com/watch?v=bXIqfHI0hQY

[Andy[_1_]]

On Dec 13, 10:17*am, bildan > wrote:

> One might imagine FLARM traffic data overlaid on the outside world.

That would require head tracking and probably a huge jump in system
complexity and cost.

Andy

[bildan]

On Dec 13, 11:36*am, Andy > wrote:
> On Dec 13, 10:17*am, bildan > wrote:
>
> > One might imagine FLARM traffic data overlaid on the outside world.
>
> That would require head tracking and probably a huge jump in system
> complexity and cost.
>
> Andy

Not a huge jump. PC gamers have a choice of several head tracking
systems which work with a player jumping about the living room.
Tracking a pilots head is less difficult since it need only track
pitch and yaw. Some IR LEDs on the glasses frame and a low-res video
camera would do it. It might even work with the "Track IR" system
supported by Condor Competition Soaring Simulator.

Head tracking would allow a very interesting 'augmented reality'
display of remote thermal detection data.

[Jeroen]

or you just buy one, second hand.......

http://www.segelflug.de/cgi-bin/classifieds/classifieds.cgi add
8034

An old French development, nice, but not perfect

Variometer mit Head Up Display

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Anzeigennummer: 8034
Aufgegeben am: 06/12/2010
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Details
Biete "HUDIS" von Delta Instruments (Frankreich)!

Kopletter Rechner inkl. E-Vario und Sollfahrt aber ohne GPS.

Mit dabei ist ein Head Up Display auf LCD Basis zur Montage auf der
Instrumentenbrettabdeckung!

Voll funktionsfähig - inklusive Handbuch!

VB 300 �






On 13 dec, 20:40, bildan > wrote:
> On Dec 13, 11:36Â*am, Andy > wrote:
>
> > On Dec 13, 10:17Â*am, bildan > wrote:
>
> > > One might imagine FLARM traffic data overlaid on the outside world.
>
> > That would require head tracking and probably a huge jump in system
> > complexity and cost.
>
> > Andy
>
> Not a huge jump. Â*PC gamers have a choice of several head tracking
> systems which work with a player jumping about the living room.
> Tracking a pilots head is less difficult since it need only track
> pitch and yaw. Â*Some IR LEDs on the glasses frame and a low-res video
> camera would do it. Â*It might even work with the "Track IR" system
> supported by Condor Competition Soaring Simulator.
>
> Head tracking would allow a very interesting 'augmented reality'
> display of remote thermal detection data.

[Andy[_1_]]

On Dec 13, 12:40*pm, bildan > wrote:
>since it need only track
> pitch and yaw.

You proposed system, if it works, can only track head position
relative to the glider. For a conformal display system the derived
head pointing angles need to be earth referenced and independent of
the glider attitude. Tell me a bit more about how you would plan to
implement that in a non complex system.

Andy

[bildan]

On Dec 13, 2:27*pm, Andy > wrote:
> On Dec 13, 12:40*pm, bildan > wrote:
>
> >since it need only track
> > pitch and yaw.
>
> You proposed system, if it works, can only track head position
> relative to the glider. *For a conformal display system the derived
> head pointing angles need to be earth referenced and independent of
> the glider attitude. Tell me a bit more about how you would plan to
> implement that in a non complex system.
>
> Andy

True. The easiest way would be a MEMS IMU integrated into the glasses
or helmet but it would need frequent updates - possibly from horizon
detection and a magnetometer.

[jcarlyle]

For those interested in a sailplane HUD, I just ran across this:
http://en.wikipedia.org/wiki/Bionic_contact_lens

-John

[johngalloway[_2_]]

I am not sure that I would want a HUD in a glider. It is distracting
enough trying to look out of the front window at the sky through the
various reflections on a glider canopy without having extraneous
instrument data out there too. The only gliding exception for me
would be an Artificial Horizon display - in that case the information
would be displayed in the same position as the natural horizon i.e.
the information displayed relates to what I am looking it (or would be
looking at if it weren't obscured) in the real world - similar to
military HUD display target data overlaying the real target.

John Galloway