# US 12,006,840 B2 · Composite vane for an aircraft turbine engine

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- Number: US 12,006,840 B2
- Document ID: US12006840B2
- Status: Granted
- Kind: B2
- Application number: 18/021,128
- Filed: 2021-08-09
- Published: 2024-01-25
- Granted: 2024-06-11
- Earliest claimed: 2020-08-17
- Assignees: Safran
- Applicants: Safran
- Inventors: Matteo Minervino; Pierre Jean Faivre D'Arcier; Damien Bruno Lamouche; Tony Alain Roger Joël Lhommeau
- Web page: https://patentgrep.com/patent/US12006840B2

## CPC

- F01D 5/282: {Selecting composite materials, e.g. blades with reinforcing filaments}
- B29C 45/14819: {the inserts being completely encapsulated}
- B29C 70/48: and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM] {, e.g. by vacuum}
- B29C 70/86: Incorporated in coherent impregnated reinforcing layers, {e.g. by winding}
- B29C 70/865: {completely encapsulated}
- B29C 70/882: {partly or totally electrically conductive, e.g. for EMI shielding (conductive floors or floor coverings H05F3/025; EMI shielding in general H05K9/00)}
- B29D 99/0025: {Producing blades or the like, e.g. blades for turbines, propellers, or wings}
- B29D 99/0028: {hollow blades}
- F01D 5/021: {for flow machines or engines with only one axial stage (for more than one stage F01D5/06)}
- F01D 17/02: Arrangement of sensing elements
- G06K 19/02: characterised by the selection of materials, e.g. to avoid wear during transport through the machine
- G06K 19/07758: {arrangements for adhering the record carrier to further objects or living beings, functioning as an identification tag}
- G06K 19/07771: {the record carrier comprising means for minimising adverse effects on the data communication capability of the record carrier, e.g. minimising Eddy currents induced in a proximate metal or otherwise electromagnetically interfering object}
- G06K 19/07773: {Antenna details (antennas for wireless devices, e.g. RFID tags, in general H01Q1/22)}
- B29K 2063/00: Use of {EP, i.e.} epoxy resins {or derivatives thereof}, as moulding material
- B29K 2105/0845: {Woven fabrics}
- B29K 2223/06: {PE, i.e. polyethylene}
- B29K 2267/00: Use of polyesters {or derivatives thereof} as reinforcement
- B29K 2277/10: {Aromatic polyamides [Polyaramides] or derivatives thereof }
- B29K 2307/04: Carbon
- B29K 2309/08: Glass
- B29L 2031/08: Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- F01D 21/003: {Arrangements for testing or measuring (for measuring vibrations G01H)}
- F05D 2220/36: specially adapted for the fan of turbofan engines
- F05D 2230/23: by permanently joining parts together
- F05D 2260/80: Diagnostics
- F05D 2300/224: Carbon, e.g. graphite
- F05D 2300/603: Composites; e.g. fibre-reinforced
- Y02T 50/60: Efficient propulsion technologies, e.g. for aircraft
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

Blower vane for an aircraft turbine engine, the vane comprising a blade connected to a root, the vane being made of a woven fibre-based composite material embedded in a polymeric resin, the vane further comprising a medium for identifying the vane, which is a radio-identification medium, the blower vane being characterised in that it comprises at least a first portion the fibres of which are only electrically conductive fibres, and at least a second portion the fibres of which are formed by a mixture of electrically conductive fibres and non-electrically conductive fibres, and in that the identification medium is located in or on the second portion.

## Claims

### Claim 1

A fan vane for an aircraft turbine engine, the vane comprising a blade connected to a root, the vane being made of a composite material based on woven fibres and embedded in a polymeric resin, the vane further comprising a medium for identifying the vane, which is a radio-identification medium, characterised in that it comprises at least a first portion, the fibres of which are only electrically conductive fibres and at least a second portion, the fibres of which are formed by a mixture of electrically conductive fibres and non-electrically conductive fibres, and in that the identification medium is located in or on said second portion.

### Claim 2 (depends on 1)

The vane according to claim 1, wherein the identification medium comprises a ball and a metallic radio antenna, the ball being located in a space between woven fibres.

### Claim 3 (depends on 2)

The vane according to claim 2, wherein the ball is entirely embedded in the polymeric resin.

### Claim 4 (depends on 2)

The vane according to claim 2, wherein the ball has a diameter less than or equal to 5 mm, and the antenna has a thickness less than or equal to 0.5 mm.

### Claim 5 (depends on 1)

The vane according to claim 1, wherein the electrically conductive fibres are carbon fibres and the non-electrically conductive fibres are glass or thermoplastic fibres, selected for example from aramid, polyethylene and polyester fibres.

### Claim 6 (depends on 1)

The vane according to claim 1, wherein said second portion extends along a trailing edge of the blade.

### Claim 7 (depends on 1)

The vane according to claim 1, wherein the resin is a thermosetting or thermoplastic resin.

### Claim 8 (depends on 1)

The vane according to claim 1, wherein the identification medium is configured to operate at a frequency between 860 and 930 MHz.

### Claim 9 (depends on 1)

An aircraft turbine engine, comprising a fan comprising a disc carrying fan vanes, at least one of these fan vanes being as defined in claim 1.

### Claim 10 (depends on 1)

A method of manufacturing the vane according to claim 1, wherein the method comprises the steps of:
a) inserting at least one preform of woven fibres and the identification medium into a mould, said at least one preform being made from electrically conductive fibres and non-electrically conductive fibres, the identification medium being located in an area of the preform comprising non-electrically conductive fibres, and
b) injecting resin into the mould so as to simultaneously embed the preform and the identification medium.