# US 2014/0193249 A1 · Electrical conductor paths > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0193249 A1 - Document ID: US20140193249A1 - Status: Published application - Kind: A1 - Application number: 14/204,780 - Filed: 2014-03-11 - Published: 2014-07-10 - Earliest claimed: 2009-08-19 - Assignees: ROLLS-ROYCE plc - Applicants: Rolls-Royce PLC - Inventors: David V. ROBERTS; Alison Jane McMILLAN; Stephen John BOOTH - Web page: https://patentgrep.com/patent/US20140193249A1 ## CPC - F01D 25/24: Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) - 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} - F01D 5/282: {Selecting composite materials, e.g. blades with reinforcing filaments} - F01D 17/02: Arrangement of sensing elements - B29L 2031/08: Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers - B29L 2031/7504: {Turbines} - F05D 2300/507: Magnetic properties - 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) - 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 A component, for example an aerofoil vane or other gas path structure in a gas turbine machine such as a gas turbine engine, in which an insulated electrical conductor path is embedded structurally integrally, and in which electromagnetic shielding, for the embedded electrical conductor path is provided structurally integrally. ## Claims ### Claim 1 An aircraft component comprising: an insulated electrical conductor path that is embedded structurally integrally, wherein electromagnetic shielding for the embedded electrical conductor path is provided structurally integrally to suppress electromagnetic effects between the embedded electrical conductor path and other electrical conductor paths in the aircraft. ### Claim 2 (depends on 1) An aircraft component as claimed in claim 1, wherein the aircraft component is a gas path structure of a gas turbine machine. ### Claim 3 (depends on 2) An aircraft component as claimed in claim 2, wherein the aircraft component is an aerofoil vane of a gas turbine machine. ### Claim 4 (depends on 1) An aircraft component as claimed in claim 1, further comprising a fiber reinforced plastic structure comprising plies, each ply comprising a weave of fibers, and a matrix material in which the plies are embedded. ### Claim 5 (depends on 4) An aircraft component as claimed in claim 4, wherein each of the plies of the fiber reinforced plastic structure comprises a weave of electrically insulating fibers, and wherein an electrically insulating fiber is substituted by an electrically conducting fiber integrally woven into a predetermined ply, the electrically conducting fiber thereby providing the electrical conductor path or the electromagnetic shielding. ### Claim 6 (depends on 4) An aircraft component as claimed in claim 4, wherein each of the plies of the fiber reinforced plastic structure comprises a weave of electrically insulating fibers, and wherein an electrically insulating fiber is provided with an electrically conducting covering integrally woven with the fiber into a predetermined ply, the fiber having the electrically conducting covering thereby providing the electrical conductor path or the electromagnetic shielding. ### Claim 7 (depends on 4) An aircraft component as claimed in claim 4, wherein one or more plies each comprising a weave of electrically insulating fibers, are laid up in such a way that a channel is provided in which one or more electrically conducting members are embedded, thereby providing the electrical conductor path and/or the electromagnetic shielding. ### Claim 8 (depends on 4) An aircraft component as claimed in claim 4, wherein at least some of the plies are of fibers having some electrical conductivity, such that they provide the electrical conductor path and/or the electromagnetic shielding. ### Claim 9 (depends on 8) An aircraft component as claimed in claim 8, wherein plies of fibers having some electrical conductivity provide both the electrical conductor path and the electromagnetic shielding, the plies of the electrical conductor path and the plies of the electromagnetic shielding being electrically insulated from one another. ### Claim 10 (depends on 9) An aircraft component as claimed in claim 9, wherein the plies of the electrical conductor path and the plies of the electromagnetic shielding are electrically insulated from one another by a ply or plies of electrically insulating fibers. ### Claim 11 (depends on 1) An aircraft component as claimed in claim 1, comprising a conductive surface coating which provides electromagnetic shielding. ### Claim 12 (depends on 11) An aircraft component as claimed in claim 11, wherein the aircraft component is a gas path structure of a gas turbine machine, and the conductive surface coating is an erosion protection coating on the gas path structure. ### Claim 13 (depends on 1) A precursor of an aircraft component as claimed in claim 1, having a fiber reinforced plastic structure comprising plies, each ply comprising a weave of fibers, and a matrix material in which the plies are embedded, wherein one or more plies each comprising a weave of electrically insulating fibers, are laid up in such a way that a channel is provided in which there is embedded one or more passageway defining members, providing passageways in the completed precursor, into which passageways one or more electrically conducting members may be subsequently introduced to provide the electrical conductor path and/or the electromagnetic shielding. ### Claim 14 (depends on 1) A gas turbine machine comprising an aircraft component as claimed in claim 1.