An energy absorber (100) to limit an acceleration force experienced by a heavy body, such as an occupant of a seat subjected to the acceleration of an aircraft crash, comprises a winding drum (10) mounted in rotation around a shaft (13), around which a traction line (11) is wound. The shaft is coupled mechanically to a brake (20) that immobilizes the shaft (13) in rotation when a torque applied to the shaft by the traction line is less than the maximum brake torque that can be generated by the brake and that when the shaft (13) is in rotation generates a torque that is approximately constant and equal to the maximum brake torque. A control element (40) acting on the brake (20) makes it possible to modify the value of the maximum brake torque and thus to adapt the energy absorber to the mass of the heavy body to maintain an acceleration experienced at a desired value for different masses.


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    Titel :

    Energy absorber for a crashworthy seat and crashworthy seat comprising such an energy absorber


    Beteiligte:
    CECINAS LAURENT (Autor:in) / TARAUD NICOLAS (Autor:in)

    Erscheinungsdatum :

    26.07.2016


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / F16F SPRINGS , Federn / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



    Fail-Safe Magnetorheological Energy Absorber for a Vertically Stroking Crashworthy Seat Suspension

    Hu, W. / Wereley, N. / Hiemenz, G. et al. | British Library Conference Proceedings | 2014


    Crashworthy Troop Seat Investigation

    M. J. Reilly | NTIS | 1974



    Crashworthy Seat Cushion Change Considerations

    Parson, C. / Harris, A. / Vertical Flight Technical Society | British Library Conference Proceedings | 2012