pxmlw6n2f/Gazebo_Distributed_TCP/worlds/plane_demo.world

<?xml version="1.0" ?>
<sdf version="1.4">
  <world name="default">
    <gui>
      <camera name="user_camera">
        <pose>10 0 3 0 0 3.141592</pose>
      </camera>
    </gui>
    <physics type="ode">
      <gravity>0.0 0.0 -10.00</gravity>
      <ode>
        <solver>
          <type>quick</type>
          <iters>100</iters>
          <sor>0.8</sor>
        </solver>
        <constraints>
          <cfm>0.0</cfm>
          <erp>0.2</erp>
          <contact_max_correcting_vel>0.1</contact_max_correcting_vel>
          <contact_surface_layer>0.0</contact_surface_layer>
        </constraints>
      </ode>
      <real_time_update_rate>0</real_time_update_rate>
      <max_step_size>0.001</max_step_size>
    </physics>
    <include>
      <uri>model://sun</uri>
    </include>
<!--
    <include>
      <uri>model://drc_terrain</uri>
    </include>
-->

    <model name="ground_plane">
      <static>true</static>
      <link name="link">
        <collision name="collision">
          <geometry>
            <plane>
              <normal>0 0 1</normal>
              <size>10000 10000</size>
            </plane>
          </geometry>
          <surface>
            <friction>
              <ode>
                <mu>1</mu>
                <mu2>1</mu2>
              </ode>
            </friction>
          </surface>
        </collision>
        <visual name="visual">
          <cast_shadows>false</cast_shadows>
          <geometry>
            <plane>
              <normal>0 0 1</normal>
              <size>10000 10000</size>
            </plane>
          </geometry>
          <material>
            <script>
              <uri>file://media/materials/scripts/gazebo.material</uri>
              <name>Gazebo/WoodFloor</name>
            </script>
          </material>
        </visual>
      </link>
    </model>

    <model name="lift_drag_demo_model">
      <pose>0 0 0 0 0 0</pose>
      <static>false</static>
      <link name="body">
        <pose>5.0 0 1.5 0 0 0</pose>
        <inertial>
          <pose>-1.5 0.0 0.0 0.0 0.0 0.0</pose>
          <inertia>
            <ixx>5.8</ixx>
            <ixy>0.0</ixy>
            <ixz>0.0</ixz>
            <iyy>10.8</iyy>
            <iyz>0.0</iyz>
            <izz>10.8</izz>
          </inertia>
          <mass>200.0</mass>
        </inertial>
        <collision name="collision">
          <geometry>
            <box>
              <size>10 1 1</size>
            </box>
          </geometry>
          <surface>
            <friction>
              <ode>
                <mu>0.3</mu>
                <mu2>0.3</mu2>
              </ode>
            </friction>
          </surface>
        </collision>
        <visual name="visual">
          <geometry>
            <box>
              <size>10 1 1</size>
            </box>
          </geometry>
          <material>
            <ambient>0.2 0.2 0.2 1.0</ambient>
            <diffuse>.421 0.225 0.0 1.0</diffuse>
          </material>
        </visual>
        <sensor name="camera" type="camera">
          <pose>15 0 1.0 0 0.1 3.1416</pose>
          <camera>
            <horizontal_fov>1.347</horizontal_fov>
            <image>
              <width>320</width>
              <height>240</height>
            </image>
            <clip>
              <near>0.1</near>
              <far>1000</far>
            </clip>
          </camera>
          <always_on>1</always_on>
          <update_rate>30</update_rate>
          <visualize>true</visualize>
        </sensor>
      </link>
      <link name="wheel_1">
        <pose>9.0 0 0.25 1.57079 0 0</pose>
        <inertial>
          <pose>0.0 0.0 0.0 0.0 0.0 0.0</pose>
          <inertia>
            <ixx>0.8</ixx>
            <ixy>0.0</ixy>
            <ixz>0.0</ixz>
            <iyy>0.8</iyy>
            <iyz>0.0</iyz>
            <izz>0.8</izz>
          </inertia>
          <mass>10.0</mass>
        </inertial>
        <collision name="collision">
          <geometry>
            <cylinder>
              <radius>0.25</radius>
              <length>0.03</length>
            </cylinder>
          </geometry>
          <surface>
            <friction>
              <ode>
                <mu>0.3</mu>
                <mu2>0.3</mu2>
              </ode>
            </friction>
          </surface>
        </collision>
        <visual name="visual">
          <geometry>
            <cylinder>
              <radius>0.25</radius>
              <length>0.03</length>
            </cylinder>
          </geometry>
          <material>
            <ambient>0.2 0.2 0.2 1.0</ambient>
            <diffuse>.421 0.225 0.0 1.0</diffuse>
          </material>
        </visual>
      </link>
      <link name="wheel_2">
        <pose>1.0 -2.0 0.25 1.57079 0 0</pose>
        <inertial>
          <pose>0.0 0.0 0.0 0.0 0.0 0.0</pose>
          <inertia>
            <ixx>0.8</ixx>
            <ixy>0.0</ixy>
            <ixz>0.0</ixz>
            <iyy>0.8</iyy>
            <iyz>0.0</iyz>
            <izz>0.8</izz>
          </inertia>
          <mass>10.0</mass>
        </inertial>
        <collision name="collision">
          <geometry>
            <cylinder>
              <radius>0.25</radius>
              <length>0.03</length>
            </cylinder>
          </geometry>
          <surface>
            <friction>
              <ode>
                <mu>0.3</mu>
                <mu2>0.3</mu2>
              </ode>
            </friction>
          </surface>
        </collision>
        <visual name="visual">
          <geometry>
            <cylinder>
              <radius>0.25</radius>
              <length>0.03</length>
            </cylinder>
          </geometry>
          <material>
            <ambient>0.2 0.2 0.2 1.0</ambient>
            <diffuse>.421 0.225 0.0 1.0</diffuse>
          </material>
        </visual>
      </link>
      <link name="wheel_3">
        <pose>1.0 2.0 0.25 1.57079 0 0</pose>
        <inertial>
          <pose>0.0 0.0 0.0 0.0 0.0 0.0</pose>
          <inertia>
            <ixx>0.8</ixx>
            <ixy>0.0</ixy>
            <ixz>0.0</ixz>
            <iyy>0.8</iyy>
            <iyz>0.0</iyz>
            <izz>0.8</izz>
          </inertia>
          <mass>10.0</mass>
        </inertial>
        <collision name="collision">
          <geometry>
            <cylinder>
              <radius>0.25</radius>
              <length>0.03</length>
            </cylinder>
          </geometry>
          <surface>
            <friction>
              <ode>
                <mu>0.3</mu>
                <mu2>0.3</mu2>
              </ode>
            </friction>
          </surface>
        </collision>
        <visual name="visual">
          <geometry>
            <cylinder>
              <radius>0.25</radius>
              <length>0.03</length>
            </cylinder>
          </geometry>
          <material>
            <ambient>0.2 0.2 0.2 1.0</ambient>
            <diffuse>.421 0.225 0.0 1.0</diffuse>
          </material>
        </visual>
      </link>
      <link name="rod_1">
        <pose>-0.25 0 1.5 0 0 0</pose>
        <inertial>
          <pose>0.0 0.0 0 0.0 0.0 0.0</pose>
          <inertia>
            <ixx>0.0012</ixx>
            <ixy>0.0</ixy>
            <ixz>0.0</ixz>
            <iyy>0.012</iyy>
            <iyz>0.0</iyz>
            <izz>0.012</izz>
          </inertia>
          <mass>1.0</mass>
        </inertial>
        <collision name="collision">
          <geometry>
            <box>
              <size>0.25 0.02 0.02</size>
            </box>
          </geometry>
        </collision>
        <visual name="visual">
          <geometry>
            <box>
              <size>0.25 0.02 0.02</size>
            </box>
          </geometry>
          <material>
            <ambient>0.3 0.3 0.3 1.0</ambient>
            <diffuse>.421 0.225 0.0 1.0</diffuse>
          </material>
        </visual>
      </link>
      <link name="blade_1">
        <pose>-0.25 0 1.5 0 0 0</pose>
        <inertial>
          <pose>0.0 0.5 0 0.0 0.0 0.0</pose>
          <inertia>
            <ixx>0.0000465</ixx>
            <ixy>0.0</ixy>
            <ixz>0.0</ixz>
            <iyy>0.0000006</iyy>
            <iyz>0.0</iyz>
            <izz>0.0000470</izz>
          </inertia>
          <mass>0.01</mass>
        </inertial>
        <collision name="collision">
          <pose>0.0 0.5 0 0.0 0.0 0.0</pose>
          <geometry>
            <box>
              <size>0.01 1.0 0.2</size>
            </box>
          </geometry>
        </collision>
        <visual name="visual">
          <pose>0.0 0.5 0 0.0 0.0 0.0</pose>
          <geometry>
            <box>
              <size>0.01 1.0 0.2</size>
            </box>
          </geometry>
          <material>
            <ambient>0.5 0.2 0.2 1.0</ambient>
            <diffuse>.421 0.225 0.0 1.0</diffuse>
          </material>
        </visual>
      </link>
      <link name="blade_2">
        <pose>-0.25 0 1.5 0 0 3.141593</pose>
        <inertial>
          <pose>0.0 0.5 0 0.0 0.0 0.0</pose>
          <inertia>
            <ixx>0.0000465</ixx>
            <ixy>0.0</ixy>
            <ixz>0.0</ixz>
            <iyy>0.0000006</iyy>
            <iyz>0.0</iyz>
            <izz>0.0000470</izz>
          </inertia>
          <mass>0.01</mass>
        </inertial>
        <collision name="collision">
          <pose>0.0 0.5 0 0.0 0.0 0.0</pose>
          <geometry>
            <box>
              <size>0.01 1.0 0.2</size>
            </box>
          </geometry>
        </collision>
        <visual name="visual">
          <pose>0.0 0.5 0 0.0 0.0 0</pose>
          <geometry>
            <box>
              <size>0.01 1.0 0.2</size>
            </box>
          </geometry>
          <material>
            <ambient>0.2 0.5 0.2 1.0</ambient>
            <diffuse>.421 0.225 0.0 1.0</diffuse>
          </material>
        </visual>
      </link>
      <joint name="wheel_1_joint" type="revolute">
        <parent>body</parent>
        <child>wheel_1</child>
        <pose>0.0 0.0 0.0 0.0 0.0 0.0</pose>
        <axis>
          <limit>
            <lower>-1e16</lower>
            <upper>1e16</upper>
          </limit>
          <xyz>0.0 1.0 0.0</xyz>
          <dynamics>
            <damping>0.0001</damping>
          </dynamics>
        </axis>
        <physics>
          <ode>
            <cfm_damping>1</cfm_damping>
          </ode>
        </physics>
      </joint>
      <joint name="wheel_2_joint" type="revolute">
        <parent>body</parent>
        <child>wheel_2</child>
        <pose>0.0 0.0 0.0 0.0 0.0 0.0</pose>
        <axis>
          <limit>
            <lower>-1e16</lower>
            <upper>1e16</upper>
          </limit>
          <xyz>0.0 1.0 0.0</xyz>
          <dynamics>
            <damping>0.0001</damping>
          </dynamics>
        </axis>
        <physics>
          <ode>
            <cfm_damping>1</cfm_damping>
          </ode>
        </physics>
      </joint>
      <joint name="wheel_3_joint" type="revolute">
        <parent>body</parent>
        <child>wheel_3</child>
        <pose>0.0 0.0 0.0 0.0 0.0 0.0</pose>
        <axis>
          <limit>
            <lower>-1e16</lower>
            <upper>1e16</upper>
          </limit>
          <xyz>0.0 1.0 0.0</xyz>
          <dynamics>
            <damping>0.0001</damping>
          </dynamics>
        </axis>
        <physics>
          <ode>
            <cfm_damping>1</cfm_damping>
          </ode>
        </physics>
      </joint>
      <joint name="rod_1_joint" type="revolute">
        <parent>body</parent>
        <child>rod_1</child>
        <pose>0.0 0.0 0.0 0.0 0.0 0.0</pose>
        <axis>
          <limit>
            <lower>-1e16</lower>
            <upper>1e16</upper>
          </limit>
          <xyz>-1.0 0.0 0.0</xyz>
          <dynamics>
            <damping>0.0001</damping>
          </dynamics>
        </axis>
        <physics>
          <ode>
            <cfm_damping>1</cfm_damping>
          </ode>
        </physics>
      </joint>
      <joint name="blade_1_joint" type="revolute">
        <parent>rod_1</parent>
        <child>blade_1</child>
        <pose>0.0 0.0 0.0 0.0 0.0 0.0</pose>
        <axis>
          <limit>
            <lower>-0.0</lower>
            <upper>0.0</upper>
          </limit>
          <xyz>1.0 0.0 0.0</xyz>
          <dynamics>
            <damping>1.000000</damping>
          </dynamics>
        </axis>
        <physics>
          <ode>
            <cfm_damping>1</cfm_damping>
          </ode>
        </physics>
      </joint>
      <joint name="blade_2_joint" type="revolute">
        <parent>rod_1</parent>
        <child>blade_2</child>
        <pose>0.0 0.0 0.0 0.0 0.0 0.0</pose>
        <axis>
          <limit>
            <lower>-0.0</lower>
            <upper>0.0</upper>
          </limit>
          <xyz>-1.0 0.0 0.0</xyz>
          <dynamics>
            <damping>1.000000</damping>
          </dynamics>
        </axis>
        <physics>
          <ode>
            <cfm_damping>1</cfm_damping>
          </ode>
        </physics>
      </joint>




      <link name="wing_1">
        <pose>3 0 1.5 0.3 0 0</pose>
        <inertial>
          <pose>0.0 5.5 0 0.0 0.0 0.0</pose>
          <inertia>
            <ixx>0.465</ixx>
            <ixy>0.0</ixy>
            <ixz>0.0</ixz>
            <iyy>0.006</iyy>
            <iyz>0.0</iyz>
            <izz>0.470</izz>
          </inertia>
          <mass>10.0</mass>
        </inertial>
        <collision name="collision">
          <pose>0.0 5.5 0 0.0 0.0 0.0</pose>
          <geometry>
            <box>
              <size>1.0 10.0 0.01</size>
            </box>
          </geometry>
        </collision>
        <visual name="visual">
          <pose>0.0 5.5 0 0.0 0.0 0.0</pose>
          <geometry>
            <box>
              <size>1.0 10.0 0.01</size>
            </box>
          </geometry>
          <material>
            <ambient>0.5 0.2 0.2 1.0</ambient>
            <diffuse>.421 0.225 0.0 1.0</diffuse>
          </material>
        </visual>
      </link>
      <link name="wing_2">
        <pose>3 0 1.5 -0.3 0 0</pose>
        <inertial>
          <pose>0.0 -5.5 0 0.0 0.0 0.0</pose>
          <inertia>
            <ixx>0.465</ixx>
            <ixy>0.0</ixy>
            <ixz>0.0</ixz>
            <iyy>0.006</iyy>
            <iyz>0.0</iyz>
            <izz>0.470</izz>
          </inertia>
          <mass>10.0</mass>
        </inertial>
        <collision name="collision">
          <pose>0.0 -5.5 0 0.0 0.0 0.0</pose>
          <geometry>
            <box>
              <size>1.0 10.0 0.01</size>
            </box>
          </geometry>
        </collision>
        <visual name="visual">
          <pose>0.0 -5.5 0 0.0 0.0 0</pose>
          <geometry>
            <box>
              <size>1.0 10.0 0.01</size>
            </box>
          </geometry>
          <material>
            <ambient>0.2 0.5 0.2 1.0</ambient>
            <diffuse>.421 0.225 0.0 1.0</diffuse>
          </material>
        </visual>
      </link>
      <joint name="wing_1_joint" type="revolute">
        <parent>body</parent>
        <child>wing_1</child>
        <pose>0.0 0.0 0.0 0.0 0.0 0.0</pose>
        <axis>
          <limit>
            <lower>-0.0</lower>
            <upper>0.0</upper>
          </limit>
          <xyz>0.0 1.0 0.0</xyz>
          <dynamics>
            <damping>1.000000</damping>
          </dynamics>
        </axis>
        <physics>
          <ode>
            <cfm_damping>1</cfm_damping>
          </ode>
        </physics>
      </joint>
      <joint name="wing_2_joint" type="revolute">
        <parent>body</parent>
        <child>wing_2</child>
        <pose>0.0 0.0 0.0 0.0 0.0 0.0</pose>
        <axis>
          <limit>
            <lower>-0.0</lower>
            <upper>0.0</upper>
          </limit>
          <xyz>0.0 -1.0 0.0</xyz>
          <dynamics>
            <damping>1.000000</damping>
          </dynamics>
        </axis>
        <physics>
          <ode>
            <cfm_damping>1</cfm_damping>
          </ode>
        </physics>
      </joint>


      <link name="wing_3">
        <pose>9 0 1.5 0 0 0</pose>
        <inertial>
          <pose>0.0 2.0 0 0.0 0.0 0.0</pose>
          <inertia>
            <ixx>0.0465</ixx>
            <ixy>0.0</ixy>
            <ixz>0.0</ixz>
            <iyy>0.0006</iyy>
            <iyz>0.0</iyz>
            <izz>0.0470</izz>
          </inertia>
          <mass>2.0</mass>
        </inertial>
        <collision name="collision">
          <pose>0.0 2.0 0 0.0 0.0 0.0</pose>
          <geometry>
            <box>
              <size>1.0 3.0 0.01</size>
            </box>
          </geometry>
        </collision>
        <visual name="visual">
          <pose>0.0 2.0 0 0.0 0.0 0.0</pose>
          <geometry>
            <box>
              <size>1.0 3.0 0.01</size>
            </box>
          </geometry>
          <material>
            <ambient>0.5 0.2 0.2 1.0</ambient>
            <diffuse>.421 0.225 0.0 1.0</diffuse>
          </material>
        </visual>
      </link>
      <link name="wing_4">
        <pose>9 0 1.5 0 0 0</pose>
        <inertial>
          <pose>0.0 -2.0 0 0.0 0.0 0.0</pose>
          <inertia>
            <ixx>0.0465</ixx>
            <ixy>0.0</ixy>
            <ixz>0.0</ixz>
            <iyy>0.0006</iyy>
            <iyz>0.0</iyz>
            <izz>0.0470</izz>
          </inertia>
          <mass>2.0</mass>
        </inertial>
        <collision name="collision">
          <pose>0.0 -2.0 0 0.0 0.0 0.0</pose>
          <geometry>
            <box>
              <size>1.0 3.0 0.01</size>
            </box>
          </geometry>
        </collision>
        <visual name="visual">
          <pose>0.0 -2.0 0 0.0 0.0 0</pose>
          <geometry>
            <box>
              <size>1.0 3.0 0.01</size>
            </box>
          </geometry>
          <material>
            <ambient>0.2 0.5 0.2 1.0</ambient>
            <diffuse>.421 0.225 0.0 1.0</diffuse>
          </material>
        </visual>
      </link>
      <joint name="wing_3_joint" type="revolute">
        <parent>body</parent>
        <child>wing_3</child>
        <pose>0.0 0.0 0.0 0.0 0.0 0.0</pose>
        <axis>
          <limit>
            <lower>-0.0</lower>
            <upper>0.0</upper>
          </limit>
          <xyz>0.0 1.0 0.0</xyz>
          <dynamics>
            <damping>1.000000</damping>
          </dynamics>
        </axis>
        <physics>
          <ode>
            <cfm_damping>1</cfm_damping>
          </ode>
        </physics>
      </joint>
      <joint name="wing_4_joint" type="revolute">
        <parent>body</parent>
        <child>wing_4</child>
        <pose>0.0 0.0 0.0 0.0 0.0 0.0</pose>
        <axis>
          <limit>
            <lower>-0.0</lower>
            <upper>0.0</upper>
          </limit>
          <xyz>0.0 -1.0 0.0</xyz>
          <dynamics>
            <damping>1.000000</damping>
          </dynamics>
        </axis>
        <physics>
          <ode>
            <cfm_damping>1</cfm_damping>
          </ode>
        </physics>
      </joint>

      <joint name="wing_5_joint" type="revolute">
        <parent>body</parent>
        <child>wing_5</child>
        <pose>0.0 0.0 0.0 0.0 0.0 0.0</pose>
        <axis>
          <limit>
            <lower>-0.0</lower>
            <upper>0.0</upper>
          </limit>
          <xyz>0.0 0.0 1.0</xyz>
          <dynamics>
            <damping>1.000000</damping>
          </dynamics>
        </axis>
        <physics>
          <ode>
            <cfm_damping>1</cfm_damping>
          </ode>
        </physics>
      </joint>

      <link name="wing_5">
        <pose>9 0 2.0 0 0 0</pose>
        <inertial>
          <pose>0.0 0 1 0.0 0.0 0.0</pose>
          <inertia>
            <ixx>0.0465</ixx>
            <ixy>0.0</ixy>
            <ixz>0.0</ixz>
            <iyy>0.0006</iyy>
            <iyz>0.0</iyz>
            <izz>0.0470</izz>
          </inertia>
          <mass>2.0</mass>
        </inertial>
        <collision name="collision">
          <pose>0.0 0 1 0.0 0.0 0.0</pose>
          <geometry>
            <box>
              <size>1.5 0.01 2.0</size>
            </box>
          </geometry>
        </collision>
        <visual name="visual">
          <pose>0.0 0 1 0.0 0.0 0</pose>
          <geometry>
            <box>
              <size>1.5 0.01 2.0</size>
            </box>
          </geometry>
          <material>
            <ambient>0.2 0.5 0.2 1.0</ambient>
            <diffuse>.421 0.225 0.0 1.0</diffuse>
          </material>
        </visual>
      </link>

      <plugin name="gazebo_blade_1" filename="libLiftDragPlugin.so">
        <a0>0.1</a0>
        <cla>10.000</cla>
        <cda>0.001</cda>
        <cma>0.00</cma>
        <alpha_stall>10.0</alpha_stall>
        <cla_stall>0.0</cla_stall>
        <cda_stall>0.01</cda_stall>
        <cma_stall>0.0</cma_stall>
        <cp>0.0 0.5 0</cp>
        <area>0.2</area>
        <air_density>1.2041</air_density>
        <forward>0 0 -1</forward>
        <upward>-1 0 0</upward>
        <link_name>lift_drag_demo_model::blade_1</link_name>
      </plugin>
      <plugin name="gazebo_blade_2" filename="libLiftDragPlugin.so">
        <a0>0.1</a0>
        <cla>10.000</cla>
        <cda>0.001</cda>
        <cma>0.00</cma>
        <alpha_stall>10.0</alpha_stall>
        <cla_stall>0.0</cla_stall>
        <cda_stall>0.01</cda_stall>
        <cma_stall>0.0</cma_stall>
        <cp>0.0 0.5 0</cp>
        <area>0.2</area>
        <air_density>1.2041</air_density>
        <!-- link flipped about z-axis 180 degrees -->
        <forward>0 0 1</forward>
        <upward>1 0 0</upward>
        <link_name>lift_drag_demo_model::blade_2</link_name>
      </plugin>
      <plugin name="gazebo_wing_1" filename="libLiftDragPlugin.so">
        <a0>0.1</a0>
        <cla>4.000</cla>
        <cda>0.001</cda>
        <cma>0.00</cma>
        <alpha_stall>10.0</alpha_stall>
        <cla_stall>0.0</cla_stall>
        <cda_stall>0.01</cda_stall>
        <cma_stall>0.0</cma_stall>
        <cp>0.0 5.0 0</cp>
        <area>10</area>
        <air_density>1.2041</air_density>
        <forward>-1 0 0</forward>
        <upward>0 0 1</upward>
        <link_name>lift_drag_demo_model::wing_1</link_name>
      </plugin>
      <plugin name="gazebo_wing_2" filename="libLiftDragPlugin.so">
        <a0>0.1</a0>
        <cla>4.000</cla>
        <cda>0.001</cda>
        <cma>0.00</cma>
        <alpha_stall>10.0</alpha_stall>
        <cla_stall>0.0</cla_stall>
        <cda_stall>0.01</cda_stall>
        <cma_stall>0.0</cma_stall>
        <cp>0.0 -5.0 0</cp>
        <area>10</area>
        <air_density>1.2041</air_density>
        <forward>-1 0 0</forward>
        <upward>0 0 1</upward>
        <link_name>lift_drag_demo_model::wing_2</link_name>
      </plugin>
      <plugin name="gazebo_wing_3" filename="libLiftDragPlugin.so">
        <a0>0.02</a0>
        <cla>4.000</cla>
        <cda>0.001</cda>
        <cma>0.00</cma>
        <alpha_stall>10.0</alpha_stall>
        <cla_stall>0.0</cla_stall>
        <cda_stall>0.01</cda_stall>
        <cma_stall>0.0</cma_stall>
        <cp>0.0 1.5 0</cp>
        <area>3</area>
        <air_density>1.2041</air_density>
        <forward>-1 0 0</forward>
        <upward>0 0 1</upward>
        <link_name>lift_drag_demo_model::wing_3</link_name>
      </plugin>
      <plugin name="gazebo_wing_4" filename="libLiftDragPlugin.so">
        <a0>0.02</a0>
        <cla>4.000</cla>
        <cda>0.001</cda>
        <cma>0.00</cma>
        <alpha_stall>10.0</alpha_stall>
        <cla_stall>0.0</cla_stall>
        <cda_stall>0.01</cda_stall>
        <cma_stall>0.0</cma_stall>
        <cp>0.0 -1.5 0</cp>
        <area>3</area>
        <air_density>1.2041</air_density>
        <forward>-1 0 0</forward>
        <upward>0 0 1</upward>
        <link_name>lift_drag_demo_model::wing_4</link_name>
      </plugin>
      <plugin name="gazebo_wing_5" filename="libLiftDragPlugin.so">
        <!-- force turn -->
        <a0>0.0</a0>
        <cla>8.000</cla>
        <cda>0.001</cda>
        <cma>0.00</cma>
        <alpha_stall>10.0</alpha_stall>
        <cla_stall>0.0</cla_stall>
        <cda_stall>0.01</cda_stall>
        <cma_stall>0.0</cma_stall>
        <cp>0.0 0 1.0</cp>
        <area>3</area>
        <air_density>1.2041</air_density>
        <forward>-1 0 0</forward>
        <upward>0 -1 0</upward>
        <link_name>lift_drag_demo_model::wing_5</link_name>
      </plugin>

    </model>
  </world>
</sdf>