A failsafe electro-mechanical actuator (130), the actuator having: an output shaft (250) having a first and second ends (250A, 250B) spaced apart from each other along a shaft axis, and outwardly facing helical grooves (360) formed along the first end; a motor shaft (180) surrounding the output shaft (250); a harmonic drive (270) between the motor and output shafts that transfers motion between these shafts in a first mode of operation; ball bearings (200D) seated at the first end (180A) of the motor shaft (180) and project inwardly from the motor shaft; in the first mode of operation: the ball bearings (200D) are disengaged from the output shaft (250) and the output shaft rotates with the motor shaft (180), and in a second mode of operation, the motor shaft axially moves toward the first end of the output shaft; the motor shaft is rotationally fixed; and the ball bearings engage the helical grooves in the output shaft, whereby the output shaft rotates.


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    Title :

    FAILSAFE ELECTRO-MECHANICAL ACTUATOR


    Additional title:

    AUSFALLSICHERER ELEKTROMECHANISCHER AKTUATOR
    ACTIONNEUR ÉLECTROMÉCANIQUE À SÉCURITÉ INTÉGRÉE


    Contributors:

    Publication date :

    2024-05-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / F16H Getriebe , GEARING



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