On Wednesday 10 May 2006 11:43 am, Steve Hosgood wrote: > Where is this "other point"? Just some arbitrary convenient point?
yes > I think I know what the "eyepoint" is :-). It is specified with an > [X,Y,Z] too, but in what coordinate frame? same as above > Likewise the VRP. This is the location of the reference point of the 3D > model isn't it? Again, from what point is the VRP's [X,Y,Z] measured from? same as above > Then there's the semi-unrelated question of the X axis. "Increasing > aftwards" it says, but along what axis of "aftwards" are we speaking? Is > it parallel (say) to the chord of the main wing or what? nose to tail > Finally, back to CG again. Do I assume the the "CG" that is specified > with an [X,Y,Z] coordinate refers just to the CG of the airframe itself? yes, CG of the empty airplane > Issue 1, Vol1 of the Quarterly Newsletter states (quite rightly) that > the actual CG of a plane moves during flight duration as the fuel is > used up, but I assume that this is why you can specify tank locations > and fuel weights and rates of fuel usage. So the actual flying CG of a > plane isn't where you set "CG"? correct Dave ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
