FGR2Phantom/Systems/dragchute.xml

<?xml version='1.0' encoding='UTF-8' ?>
<system name="dragchute">
 <property>sim/model/dragchute/target-speed-fps</property>
 <channel name="Dragchute">

   <switch name="systems/dragchute/linked">
     <default value="-1"/>
     <test value="0">
       sim/model/dragchute/position-norm gt 0.95
       gear/gear/wow == 1
       gear/unit[0]/wheel-speed-fps lt 50
     </test>
   </switch>

   <summer name="systems/dragchute/speed-error">
     <input>sim/model/dragchute/target-speed-fps</input>
     <input>-gear/unit[0]/wheel-speed-fps</input>
   </summer>

   <pid name="systems/dragchute/force">
     <input>systems/dragchute/speed-error</input>
     <kp>sim/model/dragchute/kp</kp>
     <ki>sim/model/dragchute/ki</ki>
     <kd>sim/model/dragchute/kd</kd>
     <trigger>systems/dragchute/linked</trigger>
     <output>sim/model/dragchute/force</output>
   </pid>

   <switch name="systems/dragchute/force-output">
     <default value="0"/>
     <test value="systems/dragchute/force">
       systems/dragchute/linked == 0
     </test>
     <output>external_reactions/dragchute/magnitude</output>
   </switch>

 </channel>
</system>