[특허]Acoustic coating for an aircraft incorporating a frost treatment system by joule effect

Airbus Operations SAS

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Acoustic coating for an aircraft incorporating a frost treatment system by joule effect

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B64C-001/40 B64C-023/40 B64D-015/00
미국특허분류(USC)	244/001N; 244/053B; 244/134R
출원번호	US-0515035 (2007-11-13)
등록번호	US-8181900 (2012-05-22)
우선권정보	FR-06 54928 (2006-11-16)
국제출원번호	PCT/FR2007/052333 (2007-11-13)
§371/§102 date	20090515 (20090515)
국제공개번호	WO2008/059168 (2008-05-22)
발명자 / 주소	Chene, Gilles Gantie, Fabrice Porte, Alain
출원인 / 주소	Airbus Operations SAS
대리인 / 주소	Young & Thompson
인용정보	피인용 횟수 : 13 인용 특허 : 2

초록
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The invention relates to acoustic lining for an aircraft, which can cover a leading edge, such as an air inlet in the nacelle of a propulsion unit, said lining comprising: (i) from the inside outwards, a reflective layer (28), at least one cellular structure (30) and an acoustically resistive structure (32) having a pre-determined proportion of open surface; and (ii) at least one frost treatment system in the form of at least one heating layer (46) comprising open zones through which acoustic waves can pass, which co-operate at least partially with the open zones in the acoustically resistive structure. The invention is characterized in that the acoustically resistive structure (32) includes at least one structural layer (36) with openings (38) and in that said at least one heating layer (46) is disposed under the structural layer (36).

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청구항
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1. An acoustic coating for an aircraft, able to cover a leading edge, or an air intake (22) of a nacelle (14) of a propulsion unit (10), said acoustic coating comprising: from an inside to an outside—a reflective layer (28),at least one alveolar structure (30),and an acoustically resistive structure (32) that comprises at least one porous layer (34) and at least one structural layer (36) with openings (38), said at least one structural layer (36) being arranged outside and constituting an aerodynamic surface; andat least one frost treatment system having at least one heating layer (46),wherein the openings (38) of the structural layer are arranged so as to create linear filled zones, said at least one heating layer (46) is arranged under the structural layer (36) between the openings of said structural layer and comprises at least one flat linear conductive element (48) whose width in a plane parallel to the aerodynamic surface is less than or equal to a width of filled zones of the structural layer (36) so as to not encroach upon the openings (38) of the structural element (36) and to not modify an open surface ratio of the acoustically resistive structure (32). 2. The acoustic coating according to claim 1, wherein the heating layer (46) comprises a linear conductive element in coil shape that extends over the zone to be treated. 3. The acoustic coating according to claim 2, wherein the heating layer (46) comprises at least one insulating element (62) that coats the conductive element(s) (48). 4. The acoustic coating according to claim 1, wherein the heating layer (46) comprises several linear conductive elements (48) that are connected according to an assembly in series. 5. The acoustic coating according to claim 4, wherein the heating layer (46) comprises at least one insulating element (62) that coats the conductive element(s) (48). 6. The acoustic coating according to claim 1, wherein the heating layer (46) comprises several linear conductive elements (48) that are connected according to an assembly in parallel. 7. The acoustic coating according to claim 6, wherein the heating layer (46) comprises at least one insulating element (62) that coats the conductive element(s) (48). 8. The acoustic coating according to claim 1, wherein the heating layer comprises at least one conductive sheet (54) that comprises openings (56) that are able to allow the passage of acoustic waves that cooperate at least in part with the open zones of the acoustically resistive structure, such that the variation of the open surface ratio of the acoustically resistive layer is reduced. 9. The acoustic coating according to claim 8, wherein the heating layer (46) comprises at least one insulating element (62) that coats the conductive element(s) (48). 10. The acoustic coating according to claim 1, wherein the heating layer (46) comprises at least one insulating element (62) that coats the conductive element(s) (48). 11. An air intake (22) of a nacelle (14) of an aircraft propulsion unit (10), covered at least in part by a coating (26) for an acoustic treatment that comprises: from an inside to an outside—a reflective layer (28),at least one alveolar structure (30), and an acoustically resistive structure (32) that comprises at least one porous layer (34) and at least one structural layer (36) with openings (38), said at least one structural layer (36) being arranged outside and constituting an aerodynamic surface; andat least one frost treatment system having at least one heating layer (46),wherein the openings (38) of the structural layer are arranged so as to create linear filled zones, said at least one heating layer (46) is arranged under the structural layer (36) between the openings of said structural layer and comprises at least one flat linear conductive element (48) whose width in a plane parallel to the aerodynamic surface is less than or equal to a width of filled zones of the structural layer (36) so as to not encroach upon the openings (38) of the structural element (36) and to not modify an open surface ratio of the acoustically resistive structure (32). 12. The air intake of a nacelle (14) of an aircraft propulsion unit (10) according to claim 11, wherein the heating layer (46) comprises several linear conductive elements (48) that are connected according to an assembly in parallel. 13. The air intake of a nacelle (14) of an aircraft propulsion unit (10) according to claim 11, wherein the heating layer (46) comprises at least one insulating element (62) that coats the conductive element(s) (48).

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이 특허를 인용한 특허 피인용횟수: 13

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Acoustic coating for an aircraft incorporating a frost treatment system by joule effect

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이 특허에 인용된 특허 (2)

이 특허를 인용한 특허 피인용횟수: 13

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Acoustic coating for an aircraft incorporating a frost treatment system by joule effect

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이 특허에 인용된 특허 (2)

이 특허를 인용한 특허 피인용횟수: 13

IPC 상위 출원인

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IPC 상세정보(version : 201201)

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