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Screenshots of last Alpha version

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Member
Registered: May 2013
Posts: 7
Haha, thanks! I (think) I understand your point! Indeed, the 737 Terrain display is updated "in sweeps.." ;)

Thanks and sorry for bothering you with that ;)

Berni
Member
Registered: May 2013
Posts: 7
Hi Hardy,

https://www.youtube.com/watch?v=W5-cNkqBi-E

I captured a short video of the 737 Terrain Display. First part on the ground in Basel switching through the different ranges, second part in FL330 or 350 over the alps.


Berni
« Last edit by Berni on Wed, 17 Jul 2013 14:56:26 +0000. »
Moderator
Registered: May 2009
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Member
Registered: Jul 2013
Posts: 7
Location: vhhh(haeco cathay pacific& america airline line)
User posted image



here are some information ;)
Member
Registered: May 2010
Posts: 843
User posted image

;)
Member
Registered: Jul 2013
Posts: 8
Location: LOWW, JN88FF
Hello Hardy H,

I am impressed, that is really great ...
... for me after that long pause on using PS1 ...
... I cannot believe, that there was such a progress ...
... I am surprised, that you proceed with the development ...

THANK YOU.


One question - may be already discussed, but I do NOT konw it:

On which platforms the PSX can be used ?

Linux ? Windows ? Apple ?

Thanks
Chris (@ LOWW)
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Registered: May 2009
Posts: 2449
Location: KTMB
All three!
Member
Registered: Jul 2013
Posts: 8
Location: LOWW, JN88FF
Super :D thanx !

Chris
Member
Registered: May 2011
Posts: 416
Location: YSSY and YPPH
Super Awesome...

Amazing!!

:D ;) ;)
Member
Registered: Jan 2013
Posts: 318
Location: YSSY
Let me just chime in expressing my congratulations on what looks to be an epic piece of software. Can't wait to get my hands on it!

Great job Hardy!

Cheers

- Balt
Member
Registered: Jun 2011
Posts: 307
Location: TX
the only way to get a sweep is to use the WX radar
The terrain feature is a function of IRS, FMC database and radar altimeter
it is the new EGPWS... it basically uses database matched to IRS position to show all high terrain
then to be incredibly accurate it uses the RA (Radar altimeter) feature below 5000' barometric altitude
that would be 5000 AGL
Moderator
Registered: May 2009
Posts: 5140
That's not quite correct, mad hatter. Where did you get this information from?

the mad hatter wrote
the only way to get a sweep is to use the WX radar

No. The TERR raster uses the same raster data bus that the WXR uses and it generates the same sweep effect (4 seconds from one side to the other). Just look at it next time when you are in the cockpit. Or watch one of those cockpit videos, e.g. Berni's above.

If you mean "sweep" as a synonym for radar beam, then yes, the EGPWS doesn't send radar beams. What I meant by "sweep" in this discussion is the "wiping" effect on the ND.

the mad hatter wrote
The terrain feature is a function of IRS

To get the current aircraft position, it primarily uses GPS positions. If that fails, it uses the position of the left IRS.

the mad hatter wrote
FMC database

EGPWS is independent of the FMS. The terrain elevation database is stored in the EGPWS. The FMS has no such database.

the mad hatter wrote
and radar altimeter

The RA is used for various parameters inside the alert logic, but not for the generation of the TERR raster on the ND. The RA knows only the terrain that is below the RA antennas, not the terrain that is in the vicinity of the aircraft. The "E" in EGPWS means that it is an enhanced GPWS, i.e. it does not only look below using the RA, it also looks ahead using a database.

Quote
then to be incredibly accurate it uses the RA (Radar altimeter) feature below 5000' barometric altitude

Barometric? That would be useless over Mexico City.

Quote
below 5000' barometric altitude
that would be 5000 AGL

Don't try this in Denver. Barometric, if not set to QFE, refers to MSL, not AGL.


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« Last edit by Hardy Heinlin on Sun, 04 Aug 2013 21:07:35 +0000. »
Member
Registered: Jun 2011
Posts: 307
Location: TX
I meant radar sweep the line that goes across the screen... ( i need to choose my words more carefully) will get cockpit video of it as it functions in the 744 after the 6th of this month. :-)
Moderator
Registered: May 2009
Posts: 5140
Here's a short 744 video (copyright John H Watson). The aircraft is parking, i.e. the terrain raster on the ND is stationary. The EGPWS terrain sweep is not visible when the video is paused. Only when the video runs, the sweep becomes visible because that yellow and red dot pattern is changing from image to image. Each new image is drawn over the previous image from side to side by the sweep system.

Just click on the pic to load the video. When the video viewer is loaded, you can also move the video position slider with the mouse back and forth -- and this filmed sweep will follow your mouse accordingly. Focus with your eyes any point on the image and wait until the sweep goes over it. You will see that the dot texture changes slightly from sweep to sweep.

User posted image


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Member
Registered: May 2010
Posts: 843
Mad Hatter wrote
The terrain feature is a function of IRS, FMC database and radar altimeter
it is the new EGPWS... it basically uses database matched to IRS position to show all high terrain


Just to back up what Hardy has said.

The FMC has no terrain database as such. It does have altitudes of airports, runways, nav stations, etc, but a proper terrain database has to be loaded directly into the EGPWS computer, which I've done myself on a number of occasions. The EGPWS also has it's own runway database. In most cases the aircraft uses "geometric altitude" (aircraft altitude determined by GPS satellites) and a GPS-derived position.
The whole point of the EGPWS terrain function is to get away from the inaccuracies of the traditional 744 sensors (baro altimeters, IRS, etc) and the non-forward looking Radio Altimeter. It's only when satellite coverage is low that the EGPWS is forced to use the old sensors.

Quote
then to be incredibly accurate it uses the RA (Radar altimeter) feature below 5000' barometric altitude


Having an incredibly accurate Radio Altimeter is still not going to stop you flying into a vertical cliff or steep-sided mountain ;)

Regards,
JHW
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Registered: May 2009
Posts: 2449
Location: KTMB
Psssssst ... Benson ... please replace your large avatar image with a smaller one ... like this one ... it will save a lot on bandwidth and also speeds up the correct sizing of the Forum.

Hoppie


User posted image
Member
Registered: May 2009
Posts: 772
Location: Sydney, Australia
Ouch - yes please do :)
_______________
Member
Registered: May 2009
Posts: 62
Location: YRAY
I'm awaiting this video with baited breath. I thought you were on the 767 Mad Hatter?
Moderator
Registered: May 2009
Posts: 5140
And "744", too.
Member
Registered: May 2009
Posts: 241
Hi Hardy!

Wow, we're really lucky on this forum to get one of the very rare real-world captains who currently flies both the 767 and the 744. Sure it must require a well-trained brain to know every single subtile difference in some systems that could appear from quite similar, when seen by people not working in real-world aviation...
_______________
Pierre, LFPG
Member
Registered: Jun 2011
Posts: 307
Location: TX
well seems John has already done that... so what was the point of a duplication! but since I am at it.. what small vid would you like? naturally whist the aircraft is in flight I assume from the flight deck the 744...

and be detailed as in "I want to see this doing that":
Moderator
Registered: May 2009
Posts: 5140
the mad hatter wrote
well seems John has already done that... so what was the point of a duplication! but since I am at it.. what small vid would you like? naturally whist the aircraft is in flight I assume from the flight deck the 744...

and be detailed as in "I want to see this doing that":

Will you film it yourself?
Member
Registered: May 2009
Posts: 62
Location: YRAY
Quote
"I want to see this doing that. "


I want to see you flying a 747, or a 767, or a 777.
Member
Registered: Jul 2009
Posts: 83
Location: Englandshire
I don't visit for a while and then when I do, I see these fantastic screenshots.

Hardy, my mouth is watering!

73 Keith.
Moderator
Registered: May 2009
Posts: 5140
Thanks, Keith.

Hopefully, some day I'll be offering to you some bread :-)


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