> some time ago I dug into this problem and tried to fix it. My idea was, > to check, if the movement is smaller than a very small number > "epsilon", > and if yes, set the movement to zero. The movement need to be measured > against the ground, which could be the carrier. This should fix the > sliding on ground. But the fix didn't work, because there is no very > small movement. All gears I was looking at (only a very small number) > were oscillating with a frequency of 60Hz. The amplitude was much to > large to neglect. I was not able, to kill these oscillations. > > > ... > > Maik
This is very much along the lines of the approach I took with JSBSim. It was pretty obvious looking at the data (and intuitive given the problem itself) that the oscillation was taking place at the frame rate. But, putting in the filter was not enough by itself. Ramping out the ground plane gear forces at low velocity was also added. As well, *all* external forces (wind, etc.) is nulled out when the aircraft is at rest, and ramped in at a particular velocity, as long as the aircraft is on the ground. Jon ------------------------------------------------------------------------------ Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) software. With Adobe AIR, Ajax developers can use existing skills and code to build responsive, highly engaging applications that combine the power of local resources and data with the reach of the web. Download the Adobe AIR SDK and Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
