The present invention provides drive systems for rotating one or more wheels (16) of an aircraft landing gear (10) for the purposes of ground taxiing and/or spin-up prior to landing. The drive system includes a motor (52) operable to rotate a first drive pinion via a first drive path, and a driven gear (20) adapted to be fixed to the wheel (16). The drive system has a first configuration in which the first drive pinion is capable of meshing with the driven gear (20) to permit the motor (52) to drive the driven gear (20) via the first drive path. One of the first drive pinion and the driven gear (20) comprises a first sprocket (60) and the other of the first drive pinion and the driven gear (20) comprises a series of rollers (36) arranged in two or more rows, each row of rollers being arranged to form a ring, each roller (36) being rotatable about a roller axis at a fixed distance from an axis of rotation of the first drive pinion or driven gear (20), respectively. Some embodiments include a second drive pinion and the motor (52) is operable to rotate the second drive pinion via a second drive path. Such a drive system is switchable between the first configuration and a second configuration in which the second drive pinion is capable of meshing with the driven gear (20) to permit the motor (52) to drive the driven gear (20) via the second drive path. One of the second drive pinion and the driven gear (20) comprises a second sprocket (62) and the other of the second drive pinion and the driven gear (20) comprises the series of rollers (36). The first drive path has a higher gearing ratio than the second drive path.


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    Titel :

    ПРИВОДНАЯ СИСТЕМА ШАССИ


    Erscheinungsdatum :

    2019-02-18


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Russisch


    Klassifikation :

    IPC:    B64C AEROPLANES , Flugzeuge