Ever since helicopter support was added to the YASim FDM there's an annoying bug: even when parked, with rotor off and braked, helicopters slide happily around on the ground.
Andy knows about it and explained why it happens, but claims that there's nothing to be fixed in the FDM code. Instead, he suggested to place masses and weights "appropriately" in the FDM config. Then the sliding would stop. I've spent many hours on that, without success. And I even doubt that is works: after all, there are adjustable pilot and passenger weights, different loads (MG, missiles, etc.), changing fuel level. So, how could one find a working mass distribution for all these different states?! I've tried a lot of other things -- most of it were ugly hacks. Different gear (skid) parameters, masses that would only get activated when the helicopter is parked, thrusters that would counter any movement, thrusters that would press the helicopter down. Nothing worked. (Oh, and I tried to fix the gear code itself -- without success. Not that Andy would accept a patch, I guess.) A few days ago I found the best remedy so far: a thruster that *lifts* the helicopter when it's parked. This stabilizes it a lot, though when the rotor spins, all the sliding is back. Has anyone ever found a solution to the gear bug? Something that's not a hack? (I'd accept an alternative FDM as well. What about JSBSIM? :-) m. ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
