A panel is provided for attenuating noise. This panel includes a first skin, a second skin and a cellular core. The cellular core may be connected to and form a plurality of cavities between the first skin and the second skin. The cellular core may include a wall and a septum. The cavities may inclu
A panel is provided for attenuating noise. This panel includes a first skin, a second skin and a cellular core. The cellular core may be connected to and form a plurality of cavities between the first skin and the second skin. The cellular core may include a wall and a septum. The cavities may include a first cavity and a second cavity. The septum may fluidly divide the first cavity into a first sub-cavity and a second sub-cavity. One or more perforations in the first skin may be fluidly coupled with the first sub-cavity. One or more perforations in the wall may fluidly couple the first sub-cavity with at least a region of the second cavity.
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1. A panel for attenuating noise, comprising: a first skin;a second skin; anda cellular core connected to and forming a plurality of cavities between the first skin and the second skin, the cellular core including a wall and a septum, the cavities including a first cavity and a second cavity, and th
1. A panel for attenuating noise, comprising: a first skin;a second skin; anda cellular core connected to and forming a plurality of cavities between the first skin and the second skin, the cellular core including a wall and a septum, the cavities including a first cavity and a second cavity, and the septum fluidly dividing the first cavity into a first sub-cavity and a second sub-cavity;wherein a plurality of perforations in the first skin are fluidly coupled with the first sub-cavity, and a plurality of perforations in the wall fluidly couple the first sub-cavity with at least a region of the second cavity. 2. The panel of claim 1, wherein the cellular core is vertically between the first skin and the second skin; andthe wall is laterally between and partially forms the first cavity and the second cavity. 3. The panel of claim 2, wherein the cellular core further includes a second septum fluidly dividing the second cavity into a first sub-cavity and a second sub-cavity; andthe plurality of perforations in the wall fluidly couple the first sub-cavity of the first cavity with the second sub-cavity of the second cavity. 4. The panel of claim 3, wherein the first sub-cavity of the first cavity is vertically between the first skin and the second sub-cavity of the first cavity; andthe first sub-cavity of the second cavity is vertically between the first skin and the second sub-cavity of the second cavity. 5. The panel of claim 3, wherein at least the first sub-cavity of the first cavity and the second sub-cavity of the second cavity form a diagonally extending chamber within the cellular core. 6. The panel of claim 3, wherein the cavities further include a third cavity;the cellular core further includes a second wall laterally between and partially forming the second cavity and the third cavity; anda plurality of perforations in the second wall fluidly couple the second sub-cavity of the second cavity with at least a region of the third cavity. 7. The panel of claim 1, wherein the septum is connected to the wall, and the septum is offset from the wall by an acute angle. 8. The panel of claim 1, wherein the cavities further include a third cavity; andthe cellular core further includes a second wall that partially forms and laterally fluidly divides the first cavity and the third cavity. 9. The panel of claim 1, wherein the cellular core comprises a honeycomb structure that includes the wall. 10. The panel of claim 1, wherein the cellular core comprises an open cavity structure that includes the wall. 11. The panel of claim 1, wherein each of the cavities extends from the first skin to the second skin. 12. The panel of claim 1, wherein the first cavity has a polygonal cross-sectional geometry. 13. The panel of claim 1, wherein the cellular core is bonded to the first skin and the second skin. 14. The panel of claim 1, wherein the first skin comprises at least one of composite material, metal or a polymer. 15. The panel of claim 1, wherein the cellular core comprises at least one of composite material, metal or a polymer. 16. A panel for attenuating noise, comprising: a first skin;a second skin;an open cavity structure connected to the first skin and the second skin, the open cavity structure including a plurality of walls configured to faint a plurality of cavities that extend vertically between the first skin and the second skin, wherein the cavities include a first cavity and a second cavity, and the walls include a first wall laterally between and partially for the first cavity and the second cavity; anda plurality of septums respectively disposed within the cavities, each of the septums vertically between and fluidly dividing a respective one of the cavities into a first sub-cavity and a second sub-cavity;wherein the first sub-cavity of the first cavity is fluidly coupled with one or more apertures in the first skin, and fluidly coupled with the second sub-cavity of the second cavity through a plurality of apertures in the first wall. 17. The panel of claim 16, further comprising: a plurality of second septums respectively disposed within the cavities, each of the second septums further fluidly dividing a respective one of the cavities into a third sub-cavity and vertically between the second sub-cavity and the third sub-cavity;wherein the cavities further include a third cavity, and the walls further include a second wall laterally between and partially forming the second cavity and the third cavity; andwherein the second sub-cavity of the second cavity is fluidly coupled with the third sub-cavity of the third cavity though a plurality of apertures in the second wall. 18. The panel of claim 16, wherein a first of the septums is connected to and arranged at an acute angle with the first wall. 19. The panel of claim 16, wherein at least the first sub-cavity of the first cavity and the second sub-cavity of the second cavity provide a chamber adapted for attenuating noise waves. 20. A panel for attenuating noise, comprising: a first skin;a second skin;an open cavity structure connected to the first skin and the second skin, the open cavity structure including a plurality of walls configured to form a plurality of cavities vertically between the first skin and the second skin, wherein the cavities include a first cavity and a second cavity, and the walls include a first wall laterally between and partially forming the first cavity and the second cavity; anda plurality of septums respectively disposed within the cavities, the septums including a first septum vertically between and fluidly dividing the first cavity into a first sub-cavity and a second sub-cavity;wherein the first sub-cavity is fluidly coupled with one or more apertures in the first skin, and fluidly coupled with at least a region of the second cavity through a plurality of apertures in the first wall.
Diepenbrock ; Jr. James L. (Wichita KS) Nelsen M. Dean (Goddard KS) Harp Marlyn F. (Winfield KS), Method of making a cellular core with internal septum.
Delverdier Osmin Regis,FRX ; Gonidec Patrick,FRX ; Julliard Jacques Michel Albert,FRX ; Le Barazer Bernard Louis,FRX ; Lecossais Eric,FRX ; Riou Georges Jean Xavier,FRX ; Vie Philippe Jean Marcel,FRX, Soundproofing panel and method of producing said panel.
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