[Flightgear-devel] Atmosphere temperature model

[Lauri P. <lau...@gm...>]

Hi!

First of all I'd like to say hi to all as this is my first message to
this list! Hi :)

Then, when messing around with fg, I noticed that the current atmosphere
model is somewhat correct only on troposphere (around 12km or so), and I
think some aircrafts we have can go higher than that.

So I did some improvements on that function. At low altitudes it behaves
(almost) like the old one. It also has latitude dependency, and it
should behave quite well up to 85km. Of course, that is a bit overkill.

However, I have the patch attached, it was done againts the latest git
version with "git diff". I hope it is correctly done.

I also plotted some altitude-temperature curves at different latitudes
(0, 37 and 80 degrees). They can be seen here
http://users.tkk.fi/~lapelto2/fgfs_temperature.jpg . The source cites
some references I used so the accuracy could be examined.

Lauri
--
Lauri Peltonen
lau...@gm...