Rohr, Inc.

Charles Michael Biset

Christian Soria

Jeffrey D Woods

Luby R Weaver

Andrew S Gurney

David M Adams

Jose S Alonso-Miralles

Michael John Layland

Song Chiou

Claude Marc Hubert

Sreenivas Narayanan Nampy

Randy A Monton

A thrust reverser for a nacelle may comprise a composite track beam and a composite lug. The composite lug may be inserted through a through-hole in the composite track beam. Continuous fibers in the composite lug may provide strength in the in-plane direction.

Track beam with composite lug

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 panel for attenuating noise includes a porous first skin, a second skin, and a core connected between the porous first skin and the second skin. The core includes a corrugated body and a stringer body. The corrugated body includes a plurality of corrugations configured from at least a plurality of baffles and a plurality of porous septums. Each of the corrugations includes a respective one of the baffles and a respective one of the porous septums. A first of the corrugations forms a first channel that extends laterally between and longitudinally along a first of the baffles and a first of the porous septums. The stringer body includes a plurality of sidewalls arranged longitudinally along the first channel. Each of the sidewalls is disposed within the first channel and configured to fluidly isolate longitudinally adjacent portions of the first channel from one another.

Acoustic panel with sidewall stringers

A panel is provided for attenuating noise. This panel includes a porous first skin, a second skin and a core, which is connected between the porous first skin and the second skin. The core includes a corrugated body and a plurality of stringer bodies. The corrugated body includes a plurality of corrugations configured from at least a plurality of baffles and a plurality of porous septums. Each of the corrugations includes a respective one of the baffles and a respective one of the porous septums. A first of the corrugations forms a first channel that extends laterally between a first of the baffles and a first of the porous septums. The stringer bodies are spaced longitudinally along the first channel. Each of the stringer bodies includes a first sidewall disposed within the first channel and configured to fluidly isolate longitudinally adjacent portions of the first channel from one another.

A nacelle may comprise a noise suppressing structure. The noise suppressing structure may comprise a plurality of noise suppressing cells situated between a perforated layer of material and a non-perforated layer of material. The plurality of noise suppressing cells may contact the perforated layer of material and the non-perforated layer of material at an acute angle (e.g., between twenty and seventy-five degrees) such that the plurality of noise suppressing cells are non-orthogonal to the perforated layer of material and the non-perforated layer of material. Further, each of the plurality of noise suppressing cells may comprise a hexagonal cross-sectional profile. Further still, the noise suppressing structure may comprise a support structure comprising a plurality of support members, wherein the plurality of noise suppressing cells are situated within the support structure.

Acoustic structural panel with slanted core

A fiber preform is provided. The fiber preform may comprise a base including a fiber weave with a plurality of fibers oriented in three directions. A plurality of legs may extend a first height from the base and include a fiber weave with the plurality of fibers oriented in three directions. A fiber reinforcement may be disposed proximate the legs with a second height equal to the first height. The fiber reinforcement may comprise a first ply and a second ply oriented orthogonal to the first ply in a plane parallel to the legs.

Composite preforms with supplemental load bearing plies

Aspects of the disclosure are directed to a structure comprising: a plurality of cells, a first non-permeable insert in a first cell of the plurality of cells, the first insert configured to constrict, by at least a first threshold amount, a flow of fluid in the first cell such that: acoustic power over a frequency range is attenuated by the structure by at least a second threshold amount, and a resonant frequency associated with the structure is shifted by at least a third threshold amount.

Nacelle core with insert

A nacelle may include a noise suppressing structure. The noise suppressing structure may utilize a noise suppressing cells situated between a perforated layer of material and a non-perforated layer of material. The noise suppressing cells may have a first portion and a second portion separated by a septum. The first portion may contact the septum at an obtuse angle and the second portion may contact the septum at a reflex angle.

Acoustic structural panel with herringbone core

A thrust reverser system includes a translating cascade, a blocker door, and a drive link. The drive link may be pivotably coupled to the translating cascade and the blocker door. The translating cascade may be coupled to a translating sleeve of a nacelle. The drive link may cause the blocker door to deploy in response to the translating cascade moving in an aft direction. The blocker door may be pivotably coupled to a fixed aft portion of the nacelle.

Growing community of inventors

San Diego, CA, United States of America

Charles Michael Biset