FR3036061B1 - Panneau composite et nacelle de turboreacteur d’aeronef comprenant un tel panneau - Google Patents
Panneau composite et nacelle de turboreacteur d’aeronef comprenant un tel panneau Download PDFInfo
- Publication number
- FR3036061B1 FR3036061B1 FR1554228A FR1554228A FR3036061B1 FR 3036061 B1 FR3036061 B1 FR 3036061B1 FR 1554228 A FR1554228 A FR 1554228A FR 1554228 A FR1554228 A FR 1554228A FR 3036061 B1 FR3036061 B1 FR 3036061B1
- Authority
- FR
- France
- Prior art keywords
- composite panel
- skins
- primary
- cells
- panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/78—Other construction of jet pipes
- F02K1/82—Jet pipe walls, e.g. liners
- F02K1/827—Sound absorbing structures or liners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/043—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/18—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/14—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by a layer differing constitutionally or physically in different parts, e.g. denser near its faces
- B32B5/142—Variation across the area of the layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/24—Heat or noise insulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0018—Brazing of turbine parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/02—Honeycomb structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/18—Aircraft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
- F05D2220/323—Application in turbines in gas turbines for aircraft propulsion, e.g. jet engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
- F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
- F05D2230/237—Brazing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
- F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
- F05D2230/238—Soldering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/20—Three-dimensional
- F05D2250/28—Three-dimensional patterned
- F05D2250/283—Three-dimensional patterned honeycomb
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/96—Preventing, counteracting or reducing vibration or noise
- F05D2260/963—Preventing, counteracting or reducing vibration or noise by Helmholtz resonators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/13—Refractory metals, i.e. Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W
- F05D2300/133—Titanium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims (9)
- REVENDICATIONS1. Panneau composite (20) comprenant une structure sandwich formée par une âme centrale (21) présentant une structure alvéolaire primaire (210), par exemple du type nid d'abeille, prise en sandwich entre deux peaux (22), la structure alvéolaire primaire (210) comprenant un réseau d'alvéoles principales (23), le panneau composite (20) étant caractérisé en ce qu'il comprend une pluralité de chevilles (24), chaque cheville (24) étant d'une part, agencée pour se loger et coopérer à l'intérieur d'une alvéole principale (23) et, d'autre part, formée d'une structure alvéolaire secondaire (240) comprenant un réseau d’alvéoles secondaires (25), et en ce qu’il comprend au moins une zone de courbure, les chevilles (24) étant localisées au niveau de ladite zone de courbure,
- 2, Panneau composite (20) selon la revendication 1, caractérisé en ce que chacune des chevilles (24) présente une hauteur sensiblement égale à une épaisseur (e) de la structure alvéolaire primaire (210),
- 3, Panneau composite (20) selon la revendication 1 ou 2, caractérisé en ce que les alvéoles principales (23) et/ou secondaires (25) présentent une section de forme hexagonale.
- 4, Panneau composite (20) selon l'une quelconque des revendications précédentes, caractérisé en ce qu’il est en titane.
- 5, Panneau composite (20) selon l’une quelconque des revendications précédentes, caractérisé en qu'il forme un panneau d’atténuation acoustique.
- 6. Structure interne fixe (8) pour une nacelle (1) de turboréacteur d'aéronef, caractérisée en ce qu'elle comprend au moins un panneau composite (20) selon l’une quelconque des revendications précédentes.
- 7. Nacelle (1) pour turboréacteur d’aéronef, caractérisée en ce qu'elle comprend au moins une structure interne fixe (8) selon la revendication 6.
- 8. Procédé de fabrication d'un panneau composite (20) selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'il comprend : une étape d'insertion de chevilles (24) dans des alvéoles principales (23), chaque cheville (24) se logeant et coopérant à l'intérieur d'une alvéole principale (23) ; et une étape de fixation des peaux (22) de chaque côté de la structure alvéolaire primaire (210) munie des chevilles (24), de sorte que la structure alvéolaire primaire (210) munie des chevilles (24) est prise en sandwich entre deux peaux (22).
- 9. Procédé de fabrication d'un panneau composite (20) selon la revendication 8, caractérisé en ce que l'étape de fixation des peaux est une étape de brasage de la structure alvéolaire primaire (210) munie des chevilles (24) et prise en sandwich entre les deux peaux (22).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1554228A FR3036061B1 (fr) | 2015-05-12 | 2015-05-12 | Panneau composite et nacelle de turboreacteur d’aeronef comprenant un tel panneau |
| PCT/FR2016/051108 WO2016181073A1 (fr) | 2015-05-12 | 2016-05-11 | Panneau composite et nacelle de turboréacteur d'aéronef comprenant un tel panneau |
| US15/810,267 US10746130B2 (en) | 2015-05-12 | 2017-11-13 | Composite panel and aircraft turbojet engine nacelle comprising such a panel |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1554228 | 2015-05-12 | ||
| FR1554228A FR3036061B1 (fr) | 2015-05-12 | 2015-05-12 | Panneau composite et nacelle de turboreacteur d’aeronef comprenant un tel panneau |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR3036061A1 FR3036061A1 (fr) | 2016-11-18 |
| FR3036061B1 true FR3036061B1 (fr) | 2019-08-16 |
Family
ID=53484067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1554228A Active FR3036061B1 (fr) | 2015-05-12 | 2015-05-12 | Panneau composite et nacelle de turboreacteur d’aeronef comprenant un tel panneau |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US10746130B2 (fr) |
| FR (1) | FR3036061B1 (fr) |
| WO (1) | WO2016181073A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3078330B1 (fr) * | 2018-02-27 | 2020-03-13 | Dassault Aviation | Structure en nid d'abeille en materiau ceramique et procede de fabrication associe |
| CN111361743B (zh) * | 2020-02-21 | 2022-05-17 | 中国电子科技集团公司第二十九研究所 | 一种复合材料进气道及其制备方法 |
| CN111577464A (zh) * | 2020-05-26 | 2020-08-25 | 中国航发沈阳发动机研究所 | 一种发动机特种试验用工艺进气道 |
| FR3134033A1 (fr) * | 2022-03-30 | 2023-10-06 | Airbus Operations (S.A.S.) | Panneau sandwich a alveoles contenant de la poudre de nitrure de bore et procede de fabrication dudit panneau |
Family Cites Families (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2077729A (en) * | 1935-04-01 | 1937-04-20 | Ida M Wilcox | Ship's armor |
| US2744042A (en) * | 1951-06-21 | 1956-05-01 | Goodyear Tire & Rubber | Laminated panels |
| US3072225A (en) * | 1955-10-17 | 1963-01-08 | Solar Aircraft Co | Honeycomb sandwich structure |
| US3679384A (en) * | 1970-05-07 | 1972-07-25 | Bendix Corp | Method for forming a honeycomb structure |
| US3887031A (en) * | 1973-06-11 | 1975-06-03 | Lockheed Aircraft Corp | Dual-range sound absorber |
| GB2038410B (en) * | 1978-12-27 | 1982-11-17 | Rolls Royce | Acoustic lining utilising resonance |
| US4453367A (en) * | 1981-07-10 | 1984-06-12 | General Electric Company | Honeycomb core material and sandwich construction structural building materials incorporating same |
| US4421201A (en) * | 1981-09-29 | 1983-12-20 | The Boeing Company | High efficiency broadband acoustic resonator and absorption panel |
| US4906508A (en) * | 1988-09-28 | 1990-03-06 | Karl Blankenburg | Molded structural module and process for making the same |
| JP2587165B2 (ja) * | 1992-05-14 | 1997-03-05 | 住友軽金属工業株式会社 | 曲面ハニカムパネルおよび曲面ハニカムパネルの製造方法 |
| JP3010925B2 (ja) * | 1992-09-18 | 2000-02-21 | 株式会社日立製作所 | ろう付け積層パネル及びその製作方法 |
| US7452585B1 (en) * | 2000-07-21 | 2008-11-18 | Henkel Corporation | Monolithic structures, methods of manufacture and composite structures |
| FR2815900B1 (fr) * | 2000-10-31 | 2003-07-18 | Eads Airbus Sa | Panneau sandwich reducteur de bruit, notamment pour turboreacteur d'aeronef |
| US20060070345A1 (en) * | 2004-09-30 | 2006-04-06 | The Boeing Company | Reinforced structural assembly having a tee joint and method for forming the same |
| US8413761B2 (en) * | 2005-04-04 | 2013-04-09 | Hexcel Corporation | Acoustic honeycomb with perforated septum caps |
| US20070243408A1 (en) * | 2005-11-22 | 2007-10-18 | Straza George C P | Formed core sandwich structure and method and system for making same |
| US8671693B2 (en) * | 2008-01-11 | 2014-03-18 | George C. P. Straza | Thermally conductive structure |
| FR2933224B1 (fr) * | 2008-06-25 | 2010-10-29 | Aircelle Sa | Panneau accoustique pour une tuyere d'ejection |
| JP2010169115A (ja) * | 2009-01-20 | 2010-08-05 | Toyota Motor Corp | エネルギー吸収構造 |
| JP5818700B2 (ja) * | 2012-01-19 | 2015-11-18 | 三菱航空機株式会社 | ハニカムサンドイッチ構造体の補修方法及び補修構造 |
| US8696843B1 (en) * | 2012-09-06 | 2014-04-15 | The Boeing Company | Repair of acoustically treated structures |
| US9643392B2 (en) * | 2013-07-29 | 2017-05-09 | The Boeing Company | Septumization of honeycomb sandwiches |
| US9550347B2 (en) * | 2013-07-31 | 2017-01-24 | Bell Helicopter Textron Inc. | Method of configuring composite core in a core stiffened structure and a structure incorporating the same |
| US9068345B2 (en) * | 2013-08-12 | 2015-06-30 | Hexcel Corporation | Multi-sectional acoustic septum |
| CN203393517U (zh) * | 2013-08-16 | 2014-01-15 | 林建斌 | 一种具有大小蜂窝形状的纸板 |
| US9222229B1 (en) * | 2013-10-10 | 2015-12-29 | Hrl Laboratories, Llc | Tunable sandwich-structured acoustic barriers |
| US9127452B1 (en) * | 2014-04-11 | 2015-09-08 | Rohr, Inc. | Porous septum cap |
-
2015
- 2015-05-12 FR FR1554228A patent/FR3036061B1/fr active Active
-
2016
- 2016-05-11 WO PCT/FR2016/051108 patent/WO2016181073A1/fr not_active Ceased
-
2017
- 2017-11-13 US US15/810,267 patent/US10746130B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| FR3036061A1 (fr) | 2016-11-18 |
| US20180066608A1 (en) | 2018-03-08 |
| US10746130B2 (en) | 2020-08-18 |
| WO2016181073A1 (fr) | 2016-11-17 |
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