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公开(公告)号：US20200316900A1
公开(公告)日：2020-10-08
申请号：US16828302
申请日：2020-03-24
发明人： Florian Ravise , Florent Mercat
IPC分类号： B32B3/12 , G10K11/168
摘要： An assembly constituting an acoustically absorbent material and including a first panel, a second panel pierced with holes, an intermediate panel pierced with through-holes and arranged between the first panel and the second panel, a first structure between the first panel and the intermediate panel and including first cages, a second structure between the second panel and the intermediate panel and including second cages, and for each through-hole of the intermediate panel, a tube opening out at the two ends thereof, where one of the ends of the tube is fixed to the intermediate panel at the through-hole, and where the other end of the tube is accommodated inside a first cage. Such an assembly makes it possible to obtain broad-band attenuation and is easy to manufacture.
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公开(公告)号：US10336460B2
公开(公告)日：2019-07-02
申请号：US15468404
申请日：2017-03-24
发明人： Florian Ravise , Hassan Menay
IPC分类号： B32B5/02 , B32B5/18 , B32B5/24 , B32B7/12 , B32B37/12 , B32B37/18 , B64D33/02 , B64D29/02 , F02C7/045 , G10K11/172
摘要： An acoustic panel for an aircraft nacelle includes a cellular layer configured to trap noise, a backplate fixed to one surface of the cellular layer and a facesheet fixed to another, opposite, surface of the cellular layer. The facesheet includes a layer of a preimpregnated woven material containing weft yarns spaced apart from one another and warp yarns spaced apart from one another so that the facesheet exhibits openings between the yarns.
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公开(公告)号：US20180178917A1
公开(公告)日：2018-06-28
申请号：US15840047
申请日：2017-12-13
发明人： Florian Ravise , Hassan Menay
CPC分类号： B64D15/12 , B32B2305/18 , B32B2307/202 , B32B2605/18 , B64D33/02 , B64D2033/0206 , B64D2033/0233 , B64D2033/0273 , F01D25/005 , F02C7/045 , F02C7/047 , F05D2300/603 , Y02T50/672
摘要： A structure made of composite material for a propulsive aircraft assembly includes at least one thermal zone designed to receive electrical energy. Each thermal zone includes at least one resistive skin having an inner film produced in a thermoplastic material made conductive by the inclusion of carbon nanotubes, such that each resistive skin is designed to dissipate, by Joule effect, at least a portion of the electrical energy received by the thermal zone, an intermediate ply produced in a satin fabric impregnated with a thermoplastic material, and an outer film produced in a thermoplastic material.
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公开(公告)号：US20170283082A1
公开(公告)日：2017-10-05
申请号：US15468404
申请日：2017-03-24
发明人： Florian Ravise , Hassan Menay
CPC分类号： B64D33/02 , B32B5/024 , B32B5/18 , B32B5/245 , B32B7/12 , B32B37/12 , B32B37/185 , B32B2037/1253 , B32B2250/03 , B32B2260/023 , B32B2260/046 , B32B2305/02 , B32B2305/076 , B32B2307/102 , B32B2605/18 , B64D29/02 , B64D2033/0206 , F02C7/045 , F05D2230/20 , F05D2260/963 , F05D2300/6012 , G10K11/172 , Y02T50/671
摘要： An acoustic panel for an aircraft nacelle includes a cellular layer configured to trap noise, a backplate fixed to one surface of the cellular layer and a facesheet fixed to another, opposite, surface of the cellular layer. The facesheet includes a layer of a preimpregnated woven material containing weft yarns spaced apart from one another and warp yarns spaced apart from one another so that the facesheet exhibits openings between the yarns.
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公开(公告)号：US20200316723A1
公开(公告)日：2020-10-08
申请号：US16841973
申请日：2020-04-07
发明人： Florian Ravise , Florent Mercat
IPC分类号： B23K26/382 , F02C7/045
摘要： A method for manufacturing a porous layer of an acoustic attenuation structure, porous layer of an acoustic attenuation structure thus obtained and acoustic attenuation structure comprising the porous layer. A method for manufacturing a porous layer of an acoustic attenuation structure includes a first step of production of a solid layer including at least one structural frame embedded in a resin matrix and having first and second reinforcing strips arranged so as to delimit zones without reinforcing strips and a second step of production of through-holes in the zones without reinforcing strips of the solid layer using a laser beam.
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公开(公告)号：US20200223158A1
公开(公告)日：2020-07-16
申请号：US16738396
申请日：2020-01-09
发明人： Karl Simon , Florian Ravise , Denis Brossard , Florian Chotard
IPC分类号： B29C70/30 , B29C70/54 , G10K11/162
摘要： A method for producing an acoustically resistive structure includes the steps of creating, consolidating and cutting a first layer of reinforcing fibres embedded in a first thermoplastic resin having a first melting point so as to obtain an interlayer, a step of laying a second layer of reinforcing fibres against a first face of the interlayer, a second consolidation step of consolidating the second layer of reinforcing fibres embedded in a second thermoplastic resin having a second consolidation temperature lower than the first melting point of the first resin so as to obtain a non-perforated external layer bound to the interlayer, a step of perforating the external layer and a step of laying an internal layer on a second face of the interlayer. An acoustically resistive structure obtained from the method as well as a sound-absorption panel including such an acoustically resistive structure are also described.
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公开(公告)号：US11638972B2
公开(公告)日：2023-05-02
申请号：US16841973
申请日：2020-04-07
发明人： Florian Ravise , Florent Mercat
IPC分类号： B23K26/38 , B23K26/382 , F02C7/045 , B23K101/00 , B23K103/16 , B64D33/02
摘要： A method for manufacturing a porous layer of an acoustic attenuation structure, porous layer of an acoustic attenuation structure thus obtained and acoustic attenuation structure comprising the porous layer. A method for manufacturing a porous layer of an acoustic attenuation structure includes a first step of production of a solid layer including at least one structural frame embedded in a resin matrix and having first and second reinforcing strips arranged so as to delimit zones without reinforcing strips and a second step of production of through-holes in the zones without reinforcing strips of the solid layer using a laser beam.
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公开(公告)号：US11325323B2
公开(公告)日：2022-05-10
申请号：US16738396
申请日：2020-01-09
发明人： Karl Simon , Florian Ravise , Denis Brossard , Florian Chotard
摘要： A method for producing an acoustically resistive structure includes the steps of creating, consolidating and cutting a first layer of reinforcing fibres embedded in a first thermoplastic resin having a first melting point so as to obtain an interlayer, a step of laying a second layer of reinforcing fibres against a first face of the interlayer, a second consolidation step of consolidating the second layer of reinforcing fibres embedded in a second thermoplastic resin having a second consolidation temperature lower than the first melting point of the first resin so as to obtain a non-perforated external layer bound to the interlayer, a step of perforating the external layer and a step of laying an internal layer on a second face of the interlayer. An acoustically resistive structure obtained from the method as well as a sound-absorption panel including such an acoustically resistive structure are also described.
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公开(公告)号：US11426968B2
公开(公告)日：2022-08-30
申请号：US16828302
申请日：2020-03-24
发明人： Florian Ravise , Florent Mercat
IPC分类号： B32B3/12 , G10K11/168 , B32B3/26
摘要： An assembly constituting an acoustically absorbent material and including a first panel, a second panel pierced with holes, an intermediate panel pierced with through-holes and arranged between the first panel and the second panel, a first structure between the first panel and the intermediate panel and including first cages, a second structure between the second panel and the intermediate panel and including second cages, and for each through-hole of the intermediate panel, a tube opening out at the two ends thereof, where one of the ends of the tube is fixed to the intermediate panel at the through-hole, and where the other end of the tube is accommodated inside a first cage. Such an assembly makes it possible to obtain broad-band attenuation and is easy to manufacture.
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10.发明授权公开(公告)号：US10475432B2
公开(公告)日：2019-11-12
申请号：US15721017
申请日：2017-09-29
发明人： Florian Ravise , Hassan Menay
IPC分类号： G10K11/168 , B32B5/18 , B32B27/06 , B29D24/00 , B32B27/28 , B32B27/30 , B29C65/16 , B29C65/00 , B29L24/00
摘要： A process for manufacturing an acoustic panel including at least one acoustically resistive layer, at least one cellular structure and a reflective wall. The process includes steps of depositing the parts of the acoustic panel made of thermosetting composite, depositing a film made of thermoplastic resin that is miscible with the thermosetting composite at the polymerization temperature of the thermosetting composite, polymerizing the parts of the acoustic panel made of thermosetting composite, and depositing and consolidating at least one layer made of thermoplastic composite against the film made of thermoplastic resin in order to form the reflective wall.
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