On Thu 14 June 2007 17:24, Nathaniel Homier wrote: > Does the FDM do proper modeling of engine flame out? > > Does the FDM do proper high altitude handling characteristics. I seem > to be under the impression that the FDM types in FlightGear don't work > so well for high altitudes or has this changed recently. > > Also I would like to see improved high altitude graphics in FlightGear > because in 0.9.10 and 0.9.11 you see the square of the sky and land. > High altitude graphics is just begging to be improved with an aircraft > like the SR-71. Perhaps FlightGear can use some sort of low resolution > tile for 85,000 feet to obtain a farther draw distance to get rid of the > scenery squareness. The clouds are much to square at 85,000 feet, > perhaps again a low resolution version of clouds in order to achieve > better draw distance. At 85,000 feet the low resolution might not be > visible so won't bother people? > > P.S. Thanks so much for the SR-71 Gérard. > > Nate > >
Hello Nate I can only answer, about SR71 FDM. i did not try (not yet) to include the right performance of the Aircraft, in order to get quickly a flying model, i took some values which are coming from other aircraft (i don't remember which ones) and i made an assembly which gives some good reactions until 40000 ft. The engine is the Concorde/Olympus turbojet which is able to run permanently with afterburner, it is missing the statoreactor effect which should star from 1.5 mach. With that, we get at 35000 ft 3.1 Mach. Later on a huge study on it must be done, a better FDM must be built , and any expert acknowledge is welcome. Regard -- Gérard ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Flightgear-users mailing list Flightgear-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-users
