ardupilot/Tools/autotest/aircraft/arducopter/Models/arducopter.xml

<?xml version="1.0"?>
<PropertyList>
  <!--Airframe-->
  <path>arducopter.ac</path>
  <offsets>
    <z-m>0.0</z-m>
    <y-m>0</y-m>
    <x-m>0.0</x-m>
    <pitch-deg>0</pitch-deg>
    <heading-deg>180</heading-deg>
  </offsets>
  <!--Propeller Right-->
  <animation>
    <type>noshadow</type>
    <object-name>propeller0</object-name>
  </animation>
  <animation>
    <type>spin</type>
    <object-name>propeller0</object-name>
    <property>engines/engine[0]/rpm</property>
    <factor>100</factor>
    <axis>
      <x1-m>0.000</x1-m>
      <y1-m>-0.288</y1-m>
      <z1-m>0.046</z1-m>
      <x2-m>0.000</x2-m>
      <y2-m>-0.288</y2-m>
      <z2-m>0.012</z2-m>
    </axis>
  </animation>
  <!--Propeller Left-->
  <animation>
    <type>noshadow</type>
    <object-name>propeller1</object-name>
  </animation>
  <animation>
    <type>spin</type>
    <object-name>propeller1</object-name>
    <property>engines/engine[1]/rpm</property>
    <factor>100</factor>
    <axis>
      <x1-m>0.000</x1-m>
      <y1-m>0.288</y1-m>
      <z1-m>0.046</z1-m>
      <x2-m>0.000</x2-m>
      <y2-m>0.288</y2-m>
      <z2-m>0.012</z2-m>
    </axis>
  </animation>
  <!--Propeller Front-->
  <animation>
    <type>noshadow</type>
    <object-name>propeller2</object-name>
  </animation>
  <animation>
    <type>spin</type>
    <object-name>propeller2</object-name>
    <property>engines/engine[2]/rpm</property>
    <factor>100</factor>
    <axis>
      <x1-m>0.288</x1-m>
      <y1-m>0.000</y1-m>
      <z1-m>0.046</z1-m>
      <x2-m>0.288</x2-m>
      <y2-m>0.000</y2-m>
      <z2-m>0.012</z2-m>
    </axis>
  </animation>
  <!--Propeller Back-->
  <animation>
    <type>noshadow</type>
    <object-name>propeller3</object-name>
  </animation>
  <animation>
    <type>spin</type>
    <object-name>propeller3</object-name>
    <property>engines/engine[3]/rpm</property>
    <factor>100</factor>
    <axis>
      <x1-m>-0.288</x1-m>
      <y1-m>0.000</y1-m>
      <z1-m>0.046</z1-m>
      <x2-m>-0.288</x2-m>
      <y2-m>0.000</y2-m>
      <z2-m>0.012</z2-m>
    </axis>
  </animation>
</PropertyList>