On Thursday, 8 January 2004 21:03, Erik Hofman wrote: > Paul Surgeon wrote: > > Is position 0,0,0 of an aircraft model the same point as 0,0,0 of the > > JSBSim FDM in FlightGear? > > > > I know the JSBSim FDM defines everything using the nose as the origin but > > I'm trying to figure out if my model and the FDM are lined up correctly. > > No JSBSim does not. > JSBSim uses an arbitrary location and everything else is relative to > that location. I for one use the center-front of the nozzle as (0,0,0). > > To align a JSBSim model correctly you should place the static Center of > Gravity at (0,0,0) > > Erik
So that's what the AC_CGLOC property is for ... I thought it was the CG offset from the nose! No wonder the darn thing wouldn't become airborne till it hit 250 knots. :-) So if I set the JSBSim FDM CG at (0,0,0) and I model my aircraft CG around (0,0,0) in a 3D modeler I won't have to offset anything. Right? Relativity is all relative to your point of view. Paul _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
