On Fri, 26 Apr 2002 13:14:49 -0700 (PDT) Tony Peden <[EMAIL PROTECTED]> wrote: > >I think a fixed reference point on the aircraft that >has nothing to do with the center of gravity would be >much better. Less potential for confusion that way.
And that could be the initial CG. If we provide a different reference point somebody is going to have to figure the NED offset from the CG to properly place the aircraft. *WE* know where the CG is, and the orientation of the aircraft - that's all we know. What other point could be specified? Tip of propeller hub? What about jets? Tip of nose? What about some flying vehicle that's a bit odd, like the lunar module descending towards the lunar surface. Where's the nose? The only thing that all vehicles have in common is a center of gravity. Now if we model a floating CG (which we do) then I guess we're already going to have to keep track of the delta from the initial CG so the object placement algorithm can calculate the spacial offset from the initial CG due to orientation. Jon _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
