Question about Flight Control Power Control Units
Hello,
I am doing some study of the CRJ and my systems study guide mentions that the rudder and elevators use power control units connected to a hydraulic system. However, the explanation is a bit unclear. So, can someone please give me a simple breakdown in plain english?
What is a power control unit in detail?
For example, moving the control column back, moves the control cables, which does what to the power control unit and what does the power control unit do to the rudder???
Thank you.