A blade pitch control assembly comprising a pitch control actuator (1) having a coarse actuator chamber (11) having a coarse chamber area and a fine actuator chamber (12) having a fine chamber area, the coarse chamber area being biased to a feather position, and a primary pitch control valve (2) configured to control the flow of pressurised fluid to the coarse actuator chamber (11) and the fine actuator chamber (12), respectively via a coarse fluid line (37') and a fine fluid line (38'); the assembly further comprising a hydraulic protection system located between the actuator (1) and the primary pitch control valve (2), configured to bypass the primary pitch actuator ( in response to a trigger; wherein the hydraulic protection system comprises a hydraulic protection system valve (3) located between the coarse fluid line (37') and the fine fluid line (38'), wherein activation of the hydraulic protection system valve (3) fluidly connects the coarse fluid line (37') and the fine fluid line (38') so as to balance fluid pressure between the coarse chamber (11) and the fine chamber (12).


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    Titel :

    BLADE PITCH CONTROL


    Weitere Titelangaben:

    SCHAUFELWINKELVERSTELLUNGSSTEUERUNG
    COMMANDE DE PAS DE PALE


    Beteiligte:
    MARGER THIBAUT (Autor:in) / BOULOC ROMAIN (Autor:in)

    Erscheinungsdatum :

    09.10.2024


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B64C AEROPLANES , Flugzeuge / F01D Strömungsmaschinen [Kraft- und Arbeitsmaschinen oder Kraftmaschinen], z.B. Dampfturbinen , NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES



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