A hydraulic valve manifold 3000 for a hydraulic actuator 120 is provided. The hydraulic valve manifold 3000 comprises: a hydraulic fluid input line 701; a hydraulic fluid return line 702; a pressurisation line 703, 704 for connection to the hydraulic actuator; a command input line 707 for receiving pressurised hydraulic fluid from a command manifold for the hydraulic actuator; and a positioner valve 3100 with a first isolation position, a second actuator pressurisation position and a third command position. The invention also provides an aircraft landing gear drive system, a method of operating a hydraulic valve manifold and a method of operating an aircraft landing gear drive system.


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    Title :

    A Hydraulic Valve Manifold


    Contributors:

    Publication date :

    2022-03-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B64C AEROPLANES , Flugzeuge



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