Rohr, Inc.

Adams, David M.

Biset, Charles M.

Weaver, Luby

Woods, Jeffrey

Monton, Randy A.

David M Adams

Sreenivas Narayanan Nampy

Jeffrey D Woods

Charles Michael Biset

Luby R Weaver

Randy A Monton

Charles M Biset

A structural panel is provided that includes a first core structure and a second core structure. The second core structure includes a plurality of core components, which components includes a corrugated ribbon, a first wall and a second wall. The corrugated ribbon includes a plurality of baffles and a plurality of porous septums. The baffles and the porous septums are laterally between and connected to the first wall and the second wall. Each of the porous septums are longitudinally between a respective adjacent pair of the baffles. A first of the core components projects longitudinally into and/or along the first core structure at a splice joint between the first core structure and the second core structure.

Structural panel with splice joint between adjacent core structures

A process for manufacturing a composite structure includes: providing first mandrels, each first mandrel including a base and a plurality of projections arranged longitudinally along and projecting vertically out from the base; providing second mandrels; providing first ribbon plies, each first ribbon ply including a sheet of fibrous material; arranging each first ribbon ply with a respective first mandrel, the arranging of each first ribbon ply including substantially covering each surface of each of the projections of one of the first mandrels with a respective first ribbon ply; mating each second mandrel with a respective first mandrel such that each first ribbon ply is sandwiched between a respective first mandrel and a respective second mandrel; and curing resin disposed with the first ribbon plies to consolidate the first ribbon plies together and form a fiber-reinforced composite core structure of an acoustic panel.

Process for forming a fiber-reinforced composite structure

A panel is provided for attenuating noise. This panel includes a perforated first skin, a second skin, an array of corrugations, a first channel, a second channel, a plurality of first sidewalls and a plurality of second sidewalls. The array of corrugations includes a first corrugation and a second corrugation. Each of the corrugations includes a baffle and a septum. The first channel is formed by the baffle of the first corrugation, the septum of the first corrugation and the first skin. The second channel is formed by the baffle of the second corrugation, the septum of the first corrugation and the second skin. The first sidewalls divide the first channel into a plurality of first chambers. The second sidewalls divide the second channel into a plurality of second chambers. A first of the second chambers is fluidly coupled with a subset of the first chambers through perforations in the septum of the first corrugation.

Acoustic panel with folding chamber

A structural panel may be configured for attenuating noise. This panel includes a first skin, a second skin and a core forming a plurality of cavities vertically between the first skin and the second skin. The core may include a wall connected to and extending vertically between the first skin and the second skin. The wall may be laterally between and fluidly separate at least a first of the cavities from a second of the cavities. The wall may include a vertical stiffener. One or more perforations in the first skin may be fluidly coupled with the first of the cavities.

Structural, cellular core with corrugated support walls

A panel is provided for attenuating noise. This panel includes a first skin, a second skin and a core, which forms a plurality of cavities vertically between the first skin and the second skin. The core includes a first wall, a second wall, a first baffle, a second baffle and a first septum. The cavities include a first cavity formed laterally between the first wall and the second wall and longitudinally between the first baffle and the second baffle. The first septum is longitudinally between the first baffle and the second baffle and divides the first cavity into fluidly coupled sub-cavities. The first septum is angularly offset from the first wall by an acute angle. One or more perforations in the first skin are fluidly coupled with the first cavity.

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San Diego, CA, United States of America

David M Adams