The invention relates to a control apparatus for a hydraulic variable-pitch propeller (12) of an aircraft, land vehicle or water vehicle, comprising:a hydraulic oil feed line (24);a control line (16) which can be connected to the variable-pitch propeller (12);a pressure generating device (73) which is connected to the hydraulic oil feed line (24) and provides hydraulic oil with a basic pressure;a servo valve (78) which is arranged downstream of the pressure generating device (73), the input pressure to which servo valve is the basic pressure and the output pressure from which servo valve during normal operation defines a control pressure in the control line (16) and which servo valve is connected to a controller (28) which delivers a control signal for changing the control pressure; andpressure reducing means which are arranged downstream of the servo valve (78) and upstream of the control line (16), which are mechanically actuated and which, in the event of a failure of the servo valve (78), change the control pressure in the control line (16).


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    Title :

    VERSTELLPROPELLER-EINHEIT MIT EINER HYDRAULISCHEN STEUERVORRICHTUNG


    Additional title:

    CONTROLLABLE PITCH PROPELLER UNIT WITH HYDRAULIC CONTROL DEVICE
    UNITÉ D'HÉLICE À PAS RÉGLABLE POURVUE D'UN DISPOSITIF DE COMMANDE HYDRAULIQUE


    Contributors:

    Publication date :

    2021-07-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    German


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / B64C AEROPLANES , Flugzeuge / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



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