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Old 13th Dec 2018, 11:46
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W.u.W
 
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Originally Posted by nodrama
Pozidrive - "The control shaft passes through an outer shaft, which forms part of the tail rotor hydraulic actuator piston" is referring to the part of the servo (actuator) that is boxed in Fig 3, the RH part of that boxed area. They are referring to the internal workings of the servo (actuator).

'Control shaft' is the term that the AAIB have chosen to use. Shaft, rod, whatever - it's the same part.

In Crabs diagrams below, your hollow, or outer shaft is the cylinder. In my earlier sketch drawing, it is the dotted line box in the servo.
And now it makes sense , many thanks nodrama for your professionalism and to crabs for the diagrams
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