A blade angle feedback assembly (200) for a variable-pitch aircraft propeller rotor (130) rotatable about an axis (A) and having an adjustable blade pitch angle is provided. A feedback device (204) is coupled to rotate with the rotor (130) and to be displaced axially along the axis (A) with adjustment of the blade pitch angle. Sensor(s) (212) mounted adjacent the feedback device (204) are configured to detect a passage of position marker(s) (202) provided on the feedback device (204) as the feedback device (204) rotates. A magnetic shield (510) mounted to the sensor(s) is configured to define a magnetic return path for some magnetic flux of a magnetic field exiting from a first pole of the magnet (506) toward a second pole opposite the first pole. The magnetic shield (510) comprises a wall member (510A, 510B, 510C) positioned adjacent the position marker(s) (202) and configured to span a distance over which the position marker(s) (202) are configured to be displaced with axial displacement of the feedback device (204).


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    Title :

    BLADE ANGLE POSITION FEEDBACK SYSTEM WITH MAGNETIC SHIELD


    Additional title:

    BLATTWINKELPOSITIONSRÜCKKOPPLUNGSSYSTEM MIT MAGNETISCHER ABSCHIRMUNG
    SYSTÈME DE RÉTROACTION DE POSITION ANGULAIRE DE PALE À BLINDAGE MAGNÉTIQUE


    Contributors:

    Publication date :

    2025-03-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK , Messen der Linear- oder Winkelgeschwindigkeit, der Beschleunigung, der Verzögerung oder des Stoßes / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / B64C AEROPLANES , Flugzeuge



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    BLADE ANGLE POSITION FEEDBACK SYSTEM WITH MAGNETIC SHIELD

    TOMESCU DANA | European Patent Office | 2021

    Free access