An airframe includes an energy absorbing structure with a frame, a beam mounted to the frame at a rotational joint and a collapsible member. In response to reaching a predetermined threshold load value during a high sink rate impact event, the collapsible member will collapse under an aft section of the upper deck. The rotational joint operates as a virtual hinge such that a forward section of the upper deck deforms in a predictable manner. As the upper deck supports the high mass systems, the high mass components are less likely to separate from their mounting and penetrate into the crew compartment and the main rotor system will tilt aft away from the crew compartment to minimize the likelihood that the rotor blades may penetrate the crew compartment.


    Access

    Download


    Export, share and cite



    Title :

    ENERGY ABSORBING AIRFRAME FOR A VERTICAL LIFT VEHICLE


    Additional title:

    ENERGIEABSORBIERENDES FLUGWERK FÜR SENKRECHT STARTENDES FAHRZEUG
    CELLULE D'ABSORPTION D'ÉNERGIE POUR UNE POUSSÉE VERTICALE


    Contributors:

    Publication date :

    2019-07-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



    Energy-absorbing under-floor airframe

    LUDIN DOUGLAS R / STAUFFER MATTHEW S / BOLUKBASI AKIF et al. | European Patent Office | 2020

    Free access

    ENERGY-ABSORBING UNDER-FLOOR AIRFRAME

    LUDIN DOUGLAS R / STAUFFER MATTHEW S / BOLUKBASI AKIF et al. | European Patent Office | 2019

    Free access

    ENERGY-ABSORBING UNDER-FLOOR AIRFRAME

    LUDIN DOUGLAS R / STAUFFER MATTHEW S / BOLUKBASI AKIF et al. | European Patent Office | 2019

    Free access

    ENERGY-ABSORBING UNDER-FLOOR AIRFRAME

    LUDIN DOUGLAS R / STAUFFER MATTHEW / BOLUKBASI AKIF et al. | European Patent Office | 2022

    Free access

    Vertical takeoff and landing airframe

    PETROV VAL | European Patent Office | 2021

    Free access