FWIW, the turn coordinator ball behaves *very* differently between JSBSim and YASim and another FDM I am playing with. All supposedly return accelerations in body axis in ft/sec squared. This means we can't create a single turn coordinator instrument who's ball behaves reasonably well for every FDM.
Would it be better to force the FDM's to calculate a ball deflection in degrees/radians, or do we need to investigate why the body axis accelerations are so radically different for 3 different FDM's (who all are trying to model a C172.) If the FDM's do the work, then they all have to do the failure modeling too. It would be nicer to figure out what's going on ... it seems to be more than a simple coordinate system difference, unless JSBSim/YASim swap X/Y axes or something strange like that. Regards, Curt. -- Curtis Olson IVLab / HumanFIRST Program FlightGear Project Twin Cities [EMAIL PROTECTED] [EMAIL PROTECTED] Minnesota http://www.menet.umn.edu/~curt http://www.flightgear.org _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
