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Old 3rd Aug 2018, 12:49
  #206 (permalink)  
pilot9248
 
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BAengineer, I believe it is the combination of all the characteristics listed (within a commercial air transport system) that is significant. It is not just about the system pressure. Military aircraft have been using 5000 psi hydraulics for a long time. A380 and 787 are much larger than any of those, or even Concorde (which is not a good benchmark in the context of this thread).

Volume, apples and oranges I'd say. How do you intend to power more than two independent circuits with only two engines? Besides, you "conveniently" left out a crucial part of my sentence in your quote.
Perhaps you could say that the A380 is a very expensive technology demonstrator? Subsequent aircraft will certainly benefit from the operational experience gained.

Regarding your last point: Is there anything "special" on any aircraft these days?
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