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1. WO2018144218 - CONTINUOUS DEGREE OF FREEDOM ACOUSTIC CORES

Publication Number WO/2018/144218
Publication Date 09.08.2018
International Application No. PCT/US2018/013974
International Filing Date 17.01.2018
IPC
F02C 7/24 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
7Features, component parts, details or accessories, not provided for in, or of interest apart from, groups F02C1/-F02C6/158; Air intakes for jet-propulsion plants
24Heat or noise insulation
F02C 7/045 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
7Features, component parts, details or accessories, not provided for in, or of interest apart from, groups F02C1/-F02C6/158; Air intakes for jet-propulsion plants
04Air intakes for gas-turbine plants or jet-propulsion plants
045having provisions for noise suppression
CPC
B32B 1/00
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
1Layered products having a general shape other than plane
B32B 15/01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
01all layers being exclusively metallic
B32B 15/02
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
02Layer formed of wires, e.g. mesh
B32B 15/08
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
04comprising metal as the main or only constituent of a layer, ; which is; next to another layer of ; the same or of; a ; different material
08of synthetic resin
B32B 15/082
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
04comprising metal as the main or only constituent of a layer, ; which is; next to another layer of ; the same or of; a ; different material
08of synthetic resin
082comprising vinyl resins; comprising acrylic resins
B32B 15/088
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
04comprising metal as the main or only constituent of a layer, ; which is; next to another layer of ; the same or of; a ; different material
08of synthetic resin
088comprising polyamides
Applicants
  • GENERAL ELECTRIC COMPANY [US]/[US]
  • MRA SYSTEMS, LLC [US]/[US]
Inventors
  • LIN, Wendy, Wenling
  • MARTINEZ, Michael, Moses
  • MAJJIGI, Rudramuni, Kariveerappa
  • GOLDSHOLL, Aaron
  • CALDER, David, Patrick
Agents
  • OVERBECK, Brian, P.
  • MIDGLEY, Stephen, G.
  • DIMAURO, Peter, T.
  • GNIBUS, Michael, M.
  • WINTER, Catherine, J.
Priority Data
15/421,93501.02.2017US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) CONTINUOUS DEGREE OF FREEDOM ACOUSTIC CORES
(FR) NOYAUX ACOUSTIQUES À DEGRÉ DE LIBERTÉ CONTINU
Abstract
(EN) An acoustic liner and a method of attenuating noise are provided. The acoustic liner includes a face sheet, a back sheet spaced from the face sheet, and a core layer extending between the face sheet and the back sheet. The core layer includes a plurality of resonant cells, each resonant cell including at least one cell wall coupled to the back sheet along a cell wall base edge. The at least one cell wall extends from the back sheet at an angle toward the face sheet. The at least one cell wall further coupled to the face sheet along a cell wall top edge. The resonant cell is formed in a predetermined shape and contains a volume in a space defined by the at least one cell wall, the back sheet, and the face sheet. The cell wall base edge length is greater than the cell wall top edge length.
(FR) L'invention concerne un revêtement acoustique et un procédé d'atténuation du bruit. Le revêtement acoustique comprend une feuille avant, une feuille arrière espacée de la feuille avant, et une couche centrale s'étendant entre la feuille avant et la feuille arrière. La couche centrale comprend une pluralité de cellules résonantes, chaque cellule résonante comprenant au moins une paroi cellulaire accouplée à la feuille arrière le long d'un bord de base de paroi cellulaire. La ou les parois cellulaires s'étendent à partir de la feuille arrière selon un angle vers la feuille avant. La ou les parois cellulaires sont en outre accouplées à la feuille avant le long d'un bord supérieur de paroi cellulaire. La cellule résonante est formée selon une forme prédéfinie et contient un volume dans un espace délimité par la ou les parois cellulaires, la feuille arrière et la feuille avant. La longueur de bord de base de paroi cellulaire est supérieure à la longueur de bord supérieur de paroi cellulaire.
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