Hi all! 
Thanks very much for the feedback. I appreciate it!
 
So the trick is to define "hinges" and then get their frames with the BoundingBox node.
 
I have attached a very simple stick & rudder example for an aircraft control.
  
 
best regards
 
Bernhard
 
P.S.: I still have some questions on the other examples, but I'll send separate posts.  
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