PPRuNe Forums - View Single Post - Helicopter crash in Norway today
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Old 2nd Sep 2019, 21:01
  #43 (permalink)  
AAKEE
 
Join Date: Jan 2009
Location: Sweden
Age: 56
Posts: 224
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Originally Posted by JohnDixson
Gray posted in part: “The manufacturer does not consider servo transparency a failure of the system, but a limitation of all single hydraulic systems”
Thanks for the AH statement, but I’m missing something. If the single servo system was designed to provide a control force which exceeds the maximum forces that can be generated by the rotor, this discussion, and the similar one for the Gazelle, would be moot, n’est-ce pas?
They say it is the other way around. The limits of the hydraulic system is set to not overload the strenght of the rotor system to protect it from damage if the helo is operated outside the envelope.
Servo transparency

Not saying that this is the safest way, only that is why the hyd-syst is limited in power.
I’d rather see it constructed as You say, but then the rotor system might need to be redesigned to cope with the forces.

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