A control circuit (20) for changing the angle of propeller blades (17) includes a propeller pitch change mechanism (21), and a fixed-displacement pump (22) providing the supply of oil from an engine oil return system (13). A valve (30; 130) has an outlet port (33) to direct oil from a cavity (35) of the valve (30), and a pitch port (34) in fluid communication with the pitch change mechanism (21). A spool (36) of the valve (30) is operable between a first position and a second position to respectively open and close the outlet port (33), and direct oil flow away from or to the pitch change mechanism (21).


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    Title :

    PROPELLER BLADE ANGLE CONTROL SYSTEM


    Additional title:

    SYSTEM ZUR STEUERUNG EINES PROPELLERSCHAUFELWINKELS
    SYSTÈME DE COMMANDE D'ANGLE DE PALE D'HÉLICE


    Contributors:

    Publication date :

    2021-07-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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