> It is now fixed. dir += 180 has been added back in, and the > JSBSim.cxx interface file has been changed to reverse the sense for > JSBSim. All three models should now see the wind from the same > direction, but they don't behave the same -- try this at the default > airport: > > fgfs --aircraft=c172 --airport-id=KSFO --heading=270 --wind=0@50 > fgfs --aircraft=c172-yasim --airport-id=KSFO --heading=270 --wind=0@50 > fgfs --aircraft=c172-larcsim --airport-id=KSFO --heading=270 --wind=0@50 > fgfs --aircraft=c172-uiuc --airport-id=KSFO --heading=270 --wind=0@50
Given our discussion this morning, I wonder if this is right. A **3-D** wind vector (or any uniquely specified component thereof) should IMHO specify the direction the wind is blowing towards - not from; this is a true engineering vector. But, the standard way of describing wind in meteorology (and many other fields) is azimuth direction *from* and speed (because our that is where our weather *comes*from*). Subsequent to that, and with this understood, the FGInterface class of the respective FDMs must process the values as needed by the individual FDMs. Is this now how the "system" works? Jon _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
