This system models a mooring system with a fixed length mooring line. NOTE: Currently the system only works in FlightGear and require that the mooring bollard is located at the visual reference point (VRP). Usage: Define the following properties: mooring/rope-spring-coeff-lbs_ft mooring/max-rope-force-lbs mooring/rope-length-ft Define the following external forces: 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 1.0 1.0 0.0 0.0 mooring/mooring-connected mooring/latitude-deg mooring/longitude-deg mooring/altitude-ft mooring/rope-spring-coeff-lbs_ft mooring/max-rope-force-lbs mooring/rope-length-ft -364560.0 /position/latitude-deg mooring/latitude-deg -364560.0 /position/longitude-deg mooring/longitude-deg /position/altitude-ft mooring/altitude-ft mooring/latitude-diff-ft 2.0 mooring/longitude-diff-ft 2.0 mooring/altitude-diff-ft 2.0 0.5 mooring/mooring-connected mooring/rope-spring-coeff-lbs_ft mooring/total-distance-ft mooring/rope-length-ft 0.0 0.0 mooring/max-rope-force-lbs mooring/rope-force-lbs mooring/mooring-connected mooring/total-force-lbs mooring/latitude-diff-ft mooring/total-distance-ft external_reactions/mooring-north/magnitude mooring/mooring-connected mooring/total-force-lbs mooring/longitude-diff-ft mooring/total-distance-ft external_reactions/mooring-east/magnitude mooring/mooring-connected mooring/total-force-lbs mooring/altitude-diff-ft mooring/total-distance-ft external_reactions/mooring-down/magnitude