diff --git a/FlightGear.dsp b/FlightGear.dsp
index 81baa8875..c4678a5c0 100644
--- a/FlightGear.dsp
+++ b/FlightGear.dsp
@@ -934,6 +934,36 @@ SOURCE=.\src\FDM\JSBSim\FGFDMExec.h
 # End Source File
 # Begin Source File
 
+SOURCE=.\src\FDM\JSBSim\FGForce.cpp
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGForce.h
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
 SOURCE=.\src\FDM\JSBSim\FGInitialCondition.cpp
 
 !IF  "$(CFG)" == "FlightGear - Win32 Release"
@@ -1054,6 +1084,36 @@ SOURCE=.\src\FDM\JSBSim\FGModel.h
 # End Source File
 # Begin Source File
 
+SOURCE=.\src\FDM\JSBSim\FGNozzle.cpp
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGNozzle.h
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
 SOURCE=.\src\FDM\JSBSim\FGOutput.cpp
 
 !IF  "$(CFG)" == "FlightGear - Win32 Release"
@@ -1084,6 +1144,96 @@ SOURCE=.\src\FDM\JSBSim\FGOutput.h
 # End Source File
 # Begin Source File
 
+SOURCE=.\src\FDM\JSBSim\FGPiston.cpp
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGPiston.h
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGPropeller.cpp
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGPropeller.h
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGPropulsion.cpp
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGPropulsion.h
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
 SOURCE=.\src\FDM\JSBSim\FGPosition.cpp
 
 !IF  "$(CFG)" == "FlightGear - Win32 Release"
@@ -1144,6 +1294,36 @@ SOURCE=.\src\FDM\JSBSim\FGRotation.h
 # End Source File
 # Begin Source File
 
+SOURCE=.\src\FDM\JSBSim\FGRocket.cpp
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGRocket.h
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
 SOURCE=.\src\FDM\JSBSim\FGState.cpp
 
 !IF  "$(CFG)" == "FlightGear - Win32 Release"
@@ -1174,6 +1354,66 @@ SOURCE=.\src\FDM\JSBSim\FGState.h
 # End Source File
 # Begin Source File
 
+SOURCE=.\src\FDM\JSBSim\FGTable.cpp
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGTable.h
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGThruster.cpp
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGThruster.h
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
 SOURCE=.\src\FDM\JSBSim\FGTranslation.cpp
 
 !IF  "$(CFG)" == "FlightGear - Win32 Release"
@@ -1264,6 +1504,96 @@ SOURCE=.\src\FDM\JSBSim\FGTrimAxis.h
 # End Source File
 # Begin Source File
 
+SOURCE=.\src\FDM\JSBSim\FGTurboJet.cpp
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGTurboJet.h
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGTurboProp.cpp
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGTurboProp.h
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGTurboShaft.cpp
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\JSBSim\FGTurboShaft.h
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_JSBSim"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_JSBSim"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
 SOURCE=.\src\FDM\JSBSim\FGUtility.cpp
 
 !IF  "$(CFG)" == "FlightGear - Win32 Release"
@@ -2791,6 +3121,36 @@ SOURCE=.\src\FDM\UIUCModel\uiuc_engine.h
 # End Source File
 # Begin Source File
 
+SOURCE=.\src\FDM\UIUCModel\uiuc_gear.cpp
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_UIUCModel"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_UIUCModel"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\UIUCModel\uiuc_gear.h
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_UIUCModel"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_UIUCModel"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
 SOURCE=.\src\FDM\UIUCModel\uiuc_ice.cpp
 
 !IF  "$(CFG)" == "FlightGear - Win32 Release"
@@ -3151,6 +3511,36 @@ SOURCE=.\src\FDM\UIUCModel\uiuc_map_ice.h
 # End Source File
 # Begin Source File
 
+SOURCE=.\src\FDM\UIUCModel\uiuc_map_gear.cpp
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_UIUCModel"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_UIUCModel"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
+SOURCE=.\src\FDM\UIUCModel\uiuc_map_gear.h
+
+!IF  "$(CFG)" == "FlightGear - Win32 Release"
+
+# PROP Intermediate_Dir "Release\Lib_UIUCModel"
+
+!ELSEIF  "$(CFG)" == "FlightGear - Win32 Debug"
+
+# PROP Intermediate_Dir "Debug\Lib_UIUCModel"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
 SOURCE=.\src\FDM\UIUCModel\uiuc_map_init.cpp
 
 !IF  "$(CFG)" == "FlightGear - Win32 Release"
diff --git a/src/FDM/flight.cxx b/src/FDM/flight.cxx
index 3d98c9c15..7d7f97233 100644
--- a/src/FDM/flight.cxx
+++ b/src/FDM/flight.cxx
@@ -74,6 +74,25 @@ FGEngInterface::~FGEngInterface(void) {
 
 // Constructor
 FGInterface::FGInterface() {
+    init();
+}  
+
+FGInterface::FGInterface( double dt ) {
+    
+    init();
+    delta_t = dt;
+    remainder = elapsed = multi_loop = 0;
+}
+
+// Destructor
+FGInterface::~FGInterface() {
+//   unbind();			// FIXME: should be called explicitly
+}
+
+
+void
+FGInterface::init ()
+{
     init_vec( d_pilot_rp_body_v );
     init_vec( d_cg_rp_body_v );
     init_vec( f_body_total_v );
@@ -139,24 +158,6 @@ FGInterface::FGInterface() {
     sin_latitude=cos_latitude=0;
     sin_longitude=cos_longitude=0;
     altitude_agl=0;
-}  
-
-FGInterface::FGInterface( double dt ) {
-    FGInterface();
-
-    delta_t = dt;
-    remainder = elapsed = multi_loop = 0;
-}
-
-// Destructor
-FGInterface::~FGInterface() {
-//   unbind();			// FIXME: should be called explicitly
-}
-
-
-void
-FGInterface::init ()
-{
 }
 
 void
@@ -206,7 +207,7 @@ FGInterface::bind ()
   fgTie("/velocities/airspeed", this,
 	&FGInterface::get_V_calibrated_kts,
 	&FGInterface::set_V_calibrated_kts,
-	false);
+	true);
 
 				// Local velocities
   fgTie("/velocities/speed-north", this,
@@ -214,25 +215,25 @@ FGInterface::bind ()
   fgTie("/velocities/speed-east", this,
 	&FGInterface::get_V_east,
 	&FGInterface::set_V_east,
-	false);
+	true);
   fgTie("/velocities/speed-down", this,
 	&FGInterface::get_V_down,
 	&FGInterface::set_V_down,
-	false);
+	true);
 
 				// Relative wind
   fgTie("/velocities/uBody", this,
 	&FGInterface::get_uBody,
 	&FGInterface::set_uBody,
-	false);
+	true);
   fgTie("/velocities/vBody", this,
 	&FGInterface::get_vBody,
 	&FGInterface::set_vBody,
-	false);
+	true);
   fgTie("/velocities/wBody", this,
 	&FGInterface::get_wBody,
 	&FGInterface::set_wBody,
-	false);
+	true);
 
 				// Climb and slip (read-only)
   fgTie("/velocities/vertical-speed", this,