The disclosure herein provides for disbond resistant stringer runouts. Various aspects may be used independently or in combination to mitigate disbonding associated with the stiffener runout under operational loads. Aspects include a stiffener runout having rounded base flange corners. A recessed notch may be incorporated within the base flange to provide a flange termination point that is forward of the web termination point, allowing the web to terminate prior to the base flange. The web may be trimmed from a full height to a reduced height at the web termination point. The base flange may be co-bonded to the underlying composite structure via a scarf joint. Perimeter clamp radius fillers may be used to concentrate a clamping force around the perimeter of the base flange.


    Access

    Download


    Export, share and cite



    Title :

    Disbond resistant composite stiffener runout


    Contributors:

    Publication date :

    2019-06-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse



    Disbond Resistant Composite Stiffener Runout

    DEOBALD LYLE R / BROOK KENNETH L / JACKSON TIMOTHY D et al. | European Patent Office | 2017

    Free access

    Disbond Resistant Composite Stiffener Runout

    DEOBALD LYLE R / BROOK KENNETH L / JACKSON TIMOTHY D et al. | European Patent Office | 2015

    Free access

    Disbond resistant composite stiffener runout

    DEOBALD LYLE R / BROOK KENNETH L / JACKSON TIMOTHY D et al. | European Patent Office | 2017

    Free access

    DISBOND RESISTANT COMPOSITE STIFFENER RUNOUT

    DEOBALD LYLE R / BROOK KENNETH L / JACKSON TIMOTHY D et al. | European Patent Office | 2019

    Free access

    Disbond resistant stiffener runout

    DEOBALD LYLE RAY / BROOK KENNETH L / JACKSON TIMOTHY D et al. | European Patent Office | 2017

    Free access