# US 9,518,509 B2 · Method for manufacturing a structure with cellular cores for a turbojet nacelle

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,518,509 B2
- Document ID: US9518509B2
- Status: Granted
- Kind: B2
- Application number: 14/635,667
- Filed: 2015-03-02
- Published: 2015-09-24
- Granted: 2016-12-13
- Earliest claimed: 2009-02-05
- Assignees: Aircelle
- Applicants: Aircelle
- Inventors: Bertrand Desjoyeaux; Thierry Deschamps; John Moutier
- Web page: https://patentgrep.com/patent/US9518509B2

## CPC

- F02C 7/04: Air intakes for gas-turbine plants or jet-propulsion plants
- B32B 3/12: characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
- B32B 3/18: characterised by an internal layer formed of separate pieces of material {which are juxtaposed side-by-side (B32B5/02 takes precedence)}
- B32B 3/266: {characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12}
- B32B 5/142: {Variation across the area of the layer}
- B32B 5/24: one layer being a fibrous or filamentary layer
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 15/04: 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 (next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042)}
- B32B 15/14: next to a fibrous or filamentary layer
- B32B 15/20: comprising aluminium or copper {(B32B15/016 and B32B15/017 take precedence)}
- B32B 37/12: characterised by using adhesives
- B32B 38/0012: {Mechanical treatment, e.g. roughening, deforming, stretching}
- F02K 1/827: {Sound absorbing structures or liners}
- G10K 11/172: using resonance effects
- B32B 2038/0052: {Other operations not otherwise provided for}
- B32B 2307/102: Insulating
- B32B 2307/50: having particular mechanical properties
- B32B 2307/546: Flexural strength; Flexion stiffness
- B32B 2307/724: Permeability to gases, adsorption
- B32B 2307/7242: Non-permeable
- B32B 2605/18: Aircraft
- Y02T 50/60: Efficient propulsion technologies, e.g. for aircraft
- Y10T 137/0536: Highspeed fluid intake means [e.g., jet engine intake]
- Y10T 156/1003: by separating laminae between spaced secured areas [e.g., honeycomb expanding]
- Y10T 428/192: Sheets or webs coplanar
- Y10T 428/24149: Honeycomb-like
- F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- F02K: JET-PROPULSION PLANTS (features of jet-propulsion plants common to gas-turbine plants, air intakes or fuel supply control of air-breathing jet-propulsion plants F02C7/00, F02C9/00)
- G10K: SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The present disclosure related to a method for manufacturing a structure with cellular cores that can be used in a structural panel of a turbojet nacelle, including at least one block of cellular cores. The at least one block of cellular cores includes a central portion with core honeycomb cells, and two side portions each including side honeycomb cells. The side honeycomb cells have edge honeycomb cells situated on edges of a side part of a block, and adjacent honeycomb cells. In particular, the method includes: A) forming junction walls on the side honeycomb cells by opening the edge honeycomb cells, the junction walls being capable of interacting for forming a junction area; B) unfolding the junction walls thus formed in step A; and C) joining the junction walls thus unfolded in step B and belonging to two different side portions end-to-end.

## Claims

### Claim 1

A method for manufacturing a structure with cellular cores that can be used in a structural panel of a turbojet nacelle, including at least one block of cellular cores having;
a central portion with core honeycomb cells; and
at least two side portions each including side honeycomb cells, said side honeycomb cells comprising:
edge honeycomb cells situated on edges of a side part of a block intended to be joined; and
adjacent honeycomb cells adjacent to the edge honeycomb cells,
wherein said method comprises:
A) forming junction walls on the side honeycomb cells by opening the edge honeycomb cells, the junction walls being capable of interacting for forming a junction area;
B) unfolding the junction walls thus formed in step A; and
C) joining the junction walls thus unfolded in step B and belonging to two different side portions end-to-end so that said junction walls are fitted together so as to form a junction area.

### Claim 2 (depends on 1)

The method according to claim 1, wherein a length of each junction wall is greater than or equal to a largest length of the side and/or core honeycomb cells.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the side portions of the cellular core blocks, whereof the side and core honeycomb cells are joined end-to-end.

### Claim 4 (depends on 1)

The method according to claim 1, wherein the edge and adjacent honeycomb cells are opened by section to a lateral side and/or a wall of the core and side honeycomb cells.

### Claim 5 (depends on 1)

The method according to claim 1, comprising an additional step D in which the joining done in step C is maintained by clamps or staples.