2010/11/28 Gijs de Rooy <gijsr...@hotmail.com>: > Yeah, problems is fixed! I had --model-hz=30. Setting it to 120 (so it > was omitted from the commandline by FGRun) fixed the problem. >
(...snip...) > After takeoff, bouncing stops. After landing, bouncing continues. > When braking, the intensity of the bounces increases significantly. > Apparently not all JSBSim aircraft bounce (see list below). > To make a long story short, this kind of behaviour is driven by the eigenfrequencies of the system. They are the frequencies at which a system "naturally" oscillates. A very rough estimate of these frequencies can be obtained by the square root of k/m where k is the sum of the stiffnesses of all the gears and m is the mass of the airplane. It is thus obvious that this frequency varies from one airplane to the other. As far as I remember, the simulation rate must be as greater as possible than these frequencies otherwise bouncing issues may arise. Hence the disappearance of the issue when you set the simulation time rate back to its default 120 Hz. > Cheers and thanks for the "help"! You are welcome :-) Cheers, Bertrand. ------------------------------------------------------------------------------ Increase Visibility of Your 3D Game App & Earn a Chance To Win $500! Tap into the largest installed PC base & get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
