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Old 10th Jan 2018, 08:13
  #15 (permalink)  
glad rag
 
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Originally Posted by DaveReidUK
Instead of hydraulic pressure, which tends to dissipate when power is removed, the 787's brake pistons are driven by geared elecromechanical actuators which effectively freeze in position when power is removed.

A bit like trying to push your car when it's in 4th gear.
Do the brakes auto brake on gear retraction and how do you know they have released on extension?
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