> If there were no winds at all, that might help. Otherwise, it doesn't work > at all. > > Jon
Let me expand on that. If you do come to a stop, and there are no winds at the moment, then the winds come up after you have stopped, then having reduced the forces as your velocity goes to zero, you won't have any resistance to the wind, and you'll start sliding again. Another area where I have run into trouble is when standing still and trying to calculate the angle that the tires make with the velocity vector. If you are landing, are crabbed, and/or have any rotational rate, the tire isn't going to touch down without providing a sideward force component. But, if you are standing still, the velocity vector is zero, and your steering angle is not. The algorithm that computes steering angle goes berserk, causing massively rabid changes in angle, and the resulting oscillation of force/moment. I think I have recently gotten around that problem by allowing the steering angle to change by a certain set amount per frame. However, now since the steering angle is not allowed to change rapidly, the aircraft slides - albeit much, much more smoothly, and without rotational oscillations. You squeeze the balloon a little here, and it bulges out a little there. I do have a fix in mind for that, and then the gear should be much better in JSBSim. However, as I said earlier, I'm working some propulsion system improvements at the moment. Jon _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
