> You could have saved yourself a lot of work by posting a question > before writing all this code.
I don't mind that, because it was just fun to do that. And I wasn't going to do a temperature model in the first place, but somehow ended up doing that :) > The code to do all this has existed for years. A nice table-driven > implementation. It does this and more (notably linking the _pressure_ > versus height dependence to the temperature). Pressure is kinda > important for realistic altimetry, engine performance, et cetera. > Let me know if you are interested in this. If you mean the table at the top of environment.cxx, yeah I noticed it. And I use it like before up to 35000ft. I don't know what was the reason to not use it over that altitude for temperature, it seems to be quite nice up to 100000ft. See http://users.tkk.fi/~lapelto2/fgfs_temp_graph.jpg . I also notice that it is used to model pressure at all altitudes. Or do you have some other table system than that? I was mostly doing this to add the latitude dependency to the temperature curves. I'm sure no one would notice that when flying, but it seemed like a nice thing to do. In any case, the current -56 degC at altitudes over 38000 is horrible, and we should either model using the table or something similar to my system, depending on the accuracy wanted. I don't know if any aircraft can/should fly in those high altitudes, and if their modeling takes temperature into account. Lauri -- Lauri Peltonen lauri.pelto...@gmail.com ------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
