Hydraulic Simulation - WIP

  • This is more academic; I've spent some time looking at the A350 Hydraulic system. WIP

    Ailerons now droop when no hydraulic pressure or EHS is available

    Each System now connects to its relevant flight control surface, and hydraulic actuators now connect and disconnect correctly depending on the power source. Each of the 14 spoilers is connected to a hydraulic source and a hydrostatic actuator

    - Anti-skid, nose wheel steering, and Normal/Alternate brake system are now functional; alternate brakes provide a lower braking pressure, resulting in a longer stopping distance.

    Alternate/Direct law now displays (work in progress)

    Like the real aircraft, you can still fly with no hydraulic fluid, but if you drop to emergency power, you only have the left side elevator and rudder.

    With full electric power available, you have the outer Ailerons providing roll control via the Electrohydrostatic (EHS)



  • How not to handle a dual hydraulic fault -

    Flying from Tokyo to Hong Kong, with a dual hydraulic fault, diverted to Hiroshima, only slats and inboard ailerons for roll control, the aircraft is in direct law. Emergency braking (3rd level of redundancy after Alternate braking). Nose wheel steering and anti-skid are also offline.

    My main screw-up was a tail strike whilst crunching it on the runway, my Vapp was too low, no flaps so I should have landed around 190kts. I touched down around 160kts nose high, nice touch by the devs to include Ecam tail strike detection by default

    You can hear the aircraft shout 'PITCH PITCH' just before I destroy the tail and landing gear..


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