Jon S Berndt writes: > "Norman Vine" <[EMAIL PROTECTED]> wrote: > >>My take on this is that all we need is a 'fixed' position ie 'Center of >>Geometry' returned by the FDM. This fixed position can be anywhere >>on the AirFrame and it needs to be described more exactly in the >>individual model's configuration >>file so as the Viewer part of the program can do it's thing > >Yeah, I think that's where we're headed. It might work >that we could keep doing things as we (JSBSim) are doing, >with an added step. The initial CG of the aircraft could >be defined to be the refernce point that we both >understand. We would continue to "burn fuel" and drop >stores and launch carried vehicles, etc. and change the >CG. However, when reporting location (lat/lon/alt) we'd >need to report NOT merely the location of the current >aircraft CG, but the location of the current aircraft CG >minus the delta from the original - i.e. the location of >the original CG. (?) > >Is that right?
That should work with one more assuumption that the reference CG is consistant with all invocations of the program. ie initial CG is the 'dry condition' would work FWIW - The thing I am worried about here is that the CG at initialization time is dependent on many things and this may or may not be consistant. Therefore 'dry condition' is the 'empty plane' as represented in the manufacturer's specs Ciao Norman _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
