Sandwich honeycomb composite panels are lightweight and strong, and, therefore, provide a reasonable alternative to the aluminum ring frame/stringer architecture currently used for most aircraft airframes. The drawback to honeycomb panels is that they radiate noise into the aircraft cabin veil- efficiently provoking the need for additional sound treatment which adds weight and reduces the material's cost advantage. A series of honeycomb panels was made -hick incorporated different design strategies aimed at reducing the honeycomb panels' radiation efficiency while at the same time maintaining their strength. The majority of the designs were centered around the concept of creating areas of reduced stiffness in the panel by adding voids and recesses to the core. The effort culminated with a reinforced/recessed panel which had 6 dB higher transmission loss than the baseline solid core panel while maintaining comparable strength.


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    Title :

    Quiet Honeycomb Panels


    Contributors:
    D. L. Palumbo (author) / J. Klos (author)

    Publication date :

    2010


    Size :

    12 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Quiet Honeycomb Panels

    Palumbo, Daniel L. / Klos, Jacob | NTRS | 2010


    Reinforced Honeycomb Panels

    Bhat, Balakrishna T. / Akutagawa, Wesley / Wang, Taylor G. et al. | NTRS | 1989


    Ceramic Honeycomb Panels

    Cagliostro, Domenick E. / Riccitiello, Salvatore R. | NTRS | 1989



    Improved bonding of honeycomb panels

    Sobkiewicz, S. A. | NTRS | 1977