On mercredi 01 avril 2009, jean pellotier wrote: > Jon S. Berndt a écrit : > > Yes, the difference stems from the need to know what the wind is > > bringing, and the vectorial definition of where it's going. The problem > > was that sometimes we just had a vector where we expected to see North, > > East, and Down, wind components. Well ... fine, but is that "to" or > > "from". The convention was unspecified, and that caused confusion. From > > the FlightGear side, I can see winds being specified either way. In the > > flight dynamics code, however, I expect to see a wind velocity vector - > > the direction it's going. The question is, where does the conversion to > > the wind velocity vector form break? > > > > Jon > > After having seen in some places in last JSBSim code that wind direction > is the direction the wind is toward, here's a patch that revert the > values used in wind vector for JSBSim, that work for me, wind is now > correctly applied. > i didn't tested vertical composante . > > hope that helps > > jano
OK Tested, with the Carrier "to wind" , now, when taking off, we do have the JSBSim aircraft getting the wind in front of The difference of velocity between air speed and ground speed is right. JSBSim.cxx wants that patch , the users too :) -- Gérard http://pagesperso-orange.fr/GRTux/ J'ai décidé d'être heureux parce que c'est bon pour la santé. Voltaire ------------------------------------------------------------------------------ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
