Robinson-R66/Models/HelicopterPushback/models/trailer/trailer.xml

<PropertyList>

  <path>trailer.ac</path>

  <animation>
    <type>spin</type>
    <object-name>tire-fr</object-name>
    <property>velocities/uBody-fps</property>
    <factor>-4.973</factor>
    <center>
      <x-m>0</x-m>
      <y-m>0</y-m>
      <z-m>0</z-m>
    </center>
    <axis>
      <x>0</x>
      <y>1</y>
      <z>0</z>
    </axis>
  </animation>
  
  <animation>
    <type>spin</type>
    <object-name>tire-rr</object-name>
    <property>velocities/uBody-fps</property>
    <factor>-4.973</factor>
    <center>
      <x-m>0</x-m>
      <y-m>0</y-m>
      <z-m>0</z-m>
    </center>
    <axis>
      <x>0</x>
      <y>1</y>
      <z>0</z>
    </axis>
  </animation>

  <animation>
    <type>select</type>
    <condition>
      <property>sim/model/pushback/enabled</property>
    </condition>
  </animation>

  <animation>
    <type>select</type>
    <object-name>Lock</object-name>
    <condition>
      <and>
        <not>
          <property>/sim/model/pushback/target-speed-fps</property>
        </not>
        <not>
          <property>/sim/model/pushback/target-speed-fps-y</property>
        </not>
      </and>
    </condition>
  </animation>


</PropertyList>