* [EMAIL PROTECTED] (Jon Berndt) [2002.05.30 20:45]: > > I have not been keeping track of changes on the JSBSim XML formats for > > several months, so I'll try to update the -180 definitions tonight and > > see what happens. I will let you know if I get anyway. I'm pretty busy > > these days, so I'd be happy to hand this off to a willing 3rd party to > > pick up the pieces. > > > > Anyway, I'll see what I can do tonight. Thanks > > You can probably just go ahead and write the model as you understand the > JSBSim config file format. It hasn't changed much at all recently. Any > recent changes should be easily and quickly fixable.
I went through and updated the config that is currently in JSBSim CVS. There were only minor changes needed to get it looking like the c172 config. I did not make any changes to the aero coefs. I've uploaded all of my changes to here: http://unbeatenpath.net/software/fgfs/PA-28-180/latest/ There's a -set.xml file there too that I basically just copied from the c172. My tests show a strong tendency to roll left. I have to maintain about 60% right aileron to maintain level flight. Replacing the Clb coef with the c172 one seems to fix the problem, but I left the original coef in place for someone with more know-how than me to look at it. Also, the other most notible aero problem I can see is the data tied to flap deflection. Pitch and drag seem to be a little high relative to the flap positions, but I'm not sure. There are several places in the XML file that have "NEEDS WORK" or "FIXME" by them. The only major piece that we hadn't gotten to was the propulsion section. I believe the c172 defaults are still in place. Please feel free to do what you want with this aircraft. I've taken it about as far as I can (with Cameron Munro's help, of course). If you need any data, let me know, and I'll see if I can help. Thanks -- Cameron Moore / Every so often, I like to stick my head out the \ \ window, look up, and smile for a satellite photo. / _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
