[Opengc-devel] B737-800 digital NAV display

[<jur...@ai...>]

Hi mailing list, dear co-developers of openGC

After inserting the Boeing 737 digital vertical speed gauge and analog flap
indicator, I would like to tell you about my
new project, a Boeing 737-800 NAV display containing not only nav radio
info and distances but also
waypoints, vor stations around, airports, flight plans and airway segments
from a range of 20NM up to a range of 160 NM.

I allready started developments and at this point the new NAV can allready
handle my lat lon coordinates.
Herefor, I will add a new (and neat) object in the project called
RijksDriehoeksHayfordConverter which is
a very good convertor object from latitude longitude WGS84 coordinates to a
2D projection on screen.

The main idea is to make it modular as a component, so that you can
incorporate this NAV display in your own gauge
compositions in the glass cockpit display. (see B737-800 which can display
the nav display in three different ways.)
So, wrapping different gui's around should not be a problem. I think
boeiing is using the same kind of NAV displays
these days in their latest models from the 737 till the 777.

For the nav points, Damion suggested me to use the allready present
navlist, ilslist, fixlist objects.
However, I was a little disappointed  when I noticed that a lot of data is
not present in the data file of
Robin Peel. Especially a lot of waypoints. (eg River at holland coast near
Rotterdam).
I found a new dataset which is also freeware and up to date and that
contains all data as far as I could verify...
So it might be that I will use this dataset instead as it is directly
sourced from Jeppesen data.
Also, just a remark, not a critisism. I find the current way the
geographical points are implemented object
orientally wise insufficient for the requirements of my new gauge so I
think of rearranging that also.
However, I plan to make the new objects compatible with the allready
existing ones so that if anybody wants, he
can choose between the two sets.

I hope to finish this project by the end of october 2002, but not to let
you wait until then, I will gradually start
updating my sources in opengc so you can start looking, or giving comments
about it.
So everybody, if you find something missing from the original NAV displays,
please let me know and
I'll try my level best to incorporate your wishes.

Also, concerning my previous additions, the Boeing 737 digital vertical
speed gauge and analog flap indicator,
feel free to comment.

Jurgen Roeland.