diff --git a/Gazebo_Distributed_MPI/mpi_run/hostfile b/Gazebo_Distributed_MPI/mpi_run/hostfile
index 8e019ca..3ca26d4 100644
--- a/Gazebo_Distributed_MPI/mpi_run/hostfile
+++ b/Gazebo_Distributed_MPI/mpi_run/hostfile
@@ -1,4 +1,4 @@
 airc02-PowerEdge-T640 slots=1
-anwen slots=1
+airc03-PowerEdge-T640 slots=1
 
 
diff --git a/Gazebo_Hector_Test/src/hector_quadrotor/hector_quadrotor_gazebo/worlds/kunming_airport_distribution_10hector_mpi_test.world b/Gazebo_Hector_Test/src/hector_quadrotor/hector_quadrotor_gazebo/worlds/kunming_airport_distribution_10hector_mpi_test.world
index 41e8ea4..920af50 100644
--- a/Gazebo_Hector_Test/src/hector_quadrotor/hector_quadrotor_gazebo/worlds/kunming_airport_distribution_10hector_mpi_test.world
+++ b/Gazebo_Hector_Test/src/hector_quadrotor/hector_quadrotor_gazebo/worlds/kunming_airport_distribution_10hector_mpi_test.world
@@ -51,7 +51,7 @@
       </ode> -->
     </physics>
 
-    <model name="bebop_0">
+    <!-- <model name="bebop_0">
       <pose>0 0 0.186 0 0 0</pose>
       <include>
         <uri>model://quadrotor</uri>
@@ -129,7 +129,7 @@
         <uri>model://quadrotor</uri>
       </include>
       <plugin name="takeoff" filename="/home/zhangshuai/gazebo_plugin_tutorial/takeoff/build/libtakeoff.so"/>
-    </model>
+    </model> -->
     
   </world>
 </sdf>
diff --git a/Gazebo_Hector_Test/src/hector_quadrotor/hector_quadrotor_gazebo/worlds/kunming_airport_distribution_30hector_mpi_test.world b/Gazebo_Hector_Test/src/hector_quadrotor/hector_quadrotor_gazebo/worlds/kunming_airport_distribution_30hector_mpi_test.world
index af4005b..62b7df2 100644
--- a/Gazebo_Hector_Test/src/hector_quadrotor/hector_quadrotor_gazebo/worlds/kunming_airport_distribution_30hector_mpi_test.world
+++ b/Gazebo_Hector_Test/src/hector_quadrotor/hector_quadrotor_gazebo/worlds/kunming_airport_distribution_30hector_mpi_test.world
@@ -71,7 +71,7 @@
       </ode> -->
     </physics>
 
-    <model name="bebop_0">
+    <!-- <model name="bebop_0">
       <pose>0 0 0.186 0 0 0</pose>
       <include>
         <uri>model://quadrotor</uri>
@@ -309,7 +309,7 @@
         <uri>model://quadrotor</uri>
       </include>
       <plugin name="takeoff" filename="/home/zhangshuai/gazebo_plugin_tutorial/takeoff/build/libtakeoff.so"/>
-    </model>
+    </model> -->
     
   </world>
 </sdf>
diff --git a/Gazebo_Hector_Test/src/hector_quadrotor/hector_quadrotor_gazebo/worlds/kunming_airport_distribution_4hector_mpi_test.world b/Gazebo_Hector_Test/src/hector_quadrotor/hector_quadrotor_gazebo/worlds/kunming_airport_distribution_4hector_mpi_test.world
index ac88136..2cff547 100644
--- a/Gazebo_Hector_Test/src/hector_quadrotor/hector_quadrotor_gazebo/worlds/kunming_airport_distribution_4hector_mpi_test.world
+++ b/Gazebo_Hector_Test/src/hector_quadrotor/hector_quadrotor_gazebo/worlds/kunming_airport_distribution_4hector_mpi_test.world
@@ -45,7 +45,7 @@
       </ode> -->
     </physics>
 
-    <model name="bebop_0">
+    <!-- <model name="bebop_0">
       <pose>0 5 0.186 0 0 0</pose>
       <include>
         <uri>model://quadrotor</uri>
@@ -75,7 +75,7 @@
         <uri>model://quadrotor</uri>
       </include>
       <plugin name="takeoff" filename="/home/zhangshuai/gazebo_plugin_tutorial/takeoff/build/libtakeoff.so"/>
-    </model>
+    </model> -->
     
   </world>
 </sdf>