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公开(公告)号：US20220314558A1
公开(公告)日：2022-10-06
申请号：US17843224
申请日：2022-06-17
申请人： Safran Nacelles
摘要： Tooling for manufacture of an apertured element made of a composite material includes first and second sole plates and tooling elements. Each sole plate is configured to be placed on either side of the apertured element to be manufactured. The tooling elements are placed between the first and second sole plates. The tooling elements include at least one core and peripheral bars. The core is configured to delimit a cell of the apertured element to be manufactured. The core is movable in translation along the first and second sole plates. The peripheral bars are placed on a periphery of the core and configured to delimit the apertured element to be manufactured. At least one peripheral bar is movable in translation along the first and second sole plates.
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公开(公告)号：US20210390940A1
公开(公告)日：2021-12-16
申请号：US17460933
申请日：2021-08-30
申请人： Safran Nacelles
摘要： A method for manufacturing a sound attenuating panel uses an alveolar-core structure including a first edge and a second edge separated by alveolar cells, the alveolar cells including walls extending from the first and second edges and defining a primary conduit for the circulation of a sound wave that is to be attenuated. The method includes covering the first edge or the second edge of the alveolar-core structure with a compartmentation wall; deforming the compartmentation wall to define at least one secondary conduit for the circulation of a sound wave that is to be attenuated, the secondary conduit extending at least partially within said primary conduit; and creating an opening in the compartmentation wall to permit communication between the primary and secondary conduits.
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公开(公告)号：US20190039265A1
公开(公告)日：2019-02-07
申请号：US16155417
申请日：2018-10-09
申请人： Safran Nacelles
摘要： The present disclosure relates to a preform that includes layers of textile reinforcements that are arranged in a mold by an automatic placement head and are connected to each other, and which can be dry or pre-impregnated, in order to form a part made of composite materials after curing of an impregnating resin. The part includes a folding produced by conformation of the preform after the placement of the layers of textile reinforcements. At the folding, there are spacings between at least some of the layers of textile reinforcements.
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4.发明申请公开(公告)号：US20200300196A1
公开(公告)日：2020-09-24
申请号：US16800286
申请日：2020-02-25
申请人： Safran Nacelles , Safran Ceramics
摘要： A panel for a nacelle of an aircraft propulsion assembly includes two skins and a cell structure provided with transverse partitions defining cells. The cell structure includes folds with at least one central part forming at least one part of at least one transverse partition and at least one peripheral part extending along at least one of the skins. A nacelle with such a panel is provided, as well as a method for manufacturing such a panel.
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公开(公告)号：US20200180238A1
公开(公告)日：2020-06-11
申请号：US16785979
申请日：2020-02-10
申请人： Safran Nacelles
摘要： A method for manufacturing a fibrous tubular structure including lobes, in which fibers are draped/deposited on a mandrel having a shape corresponding to that of the fibrous structure, includes draping/deposition carried out such that at least one group of fibers has a same orientation with respect to the axis (A) of said fibrous structure, then, the fibers having been draped over an angular sector less than the total periphery of the mandrel, one of the ends of the fibrous structure is separated from the mandrel in order to allow the continuation of the draping on the same mandrel.
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公开(公告)号：US20170175308A1
公开(公告)日：2017-06-22
申请号：US15454022
申请日：2017-03-09
申请人： SAFRAN NACELLES
CPC分类号： D03D25/005 , B29B11/16 , B29C70/24 , B29K2307/04 , D03J1/00 , D10B2505/02 , F01D5/282 , F01D9/00 , F01D9/04 , F01D25/24 , F01D25/243 , F01D25/246 , F01D25/265 , Y02T50/672
摘要： The present disclosure concerns a preform for a curved composite stiffener for an axisymmetric part such as a shroud, including at least one web and at least one flange curved about an axis of revolution of the preform and defining a substantially “T” or an “I” shaped section. In one form, the preform includes a web and a flange, wherein the web includes a plurality of warp yarns circumferentially oriented relative to the axis of revolution of the preform, and a plurality of weft yarns oriented radially relative to said axis, and the flange includes a plurality of warp yarns circumferentially oriented relative to the axis of revolution of the preform, and a plurality of weft yarns substantially parallel to said axis.
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公开(公告)号：US20220230613A1
公开(公告)日：2022-07-21
申请号：US17716089
申请日：2022-04-08
申请人： Safran Nacelles
IPC分类号： G10K11/172 , B64D33/02
摘要： An acoustic attenuation panel includes a perforated acoustic wall, a first honeycomb structure coupled to the perforated acoustic wall and including a plurality of acoustic cells defined by peripheral partitions, a second honeycomb structure including a plurality of acoustic cells defined by peripheral partitions, and a septum which includes a plurality of macro-perforations and is positioned between the first honeycomb structure and the second honeycomb structure. Each acoustic cell of the first honeycomb structure and each acoustic cell of the at least second honeycomb structure are arranged opposite a single perforation of the septum.
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公开(公告)号：US20200291893A1
公开(公告)日：2020-09-17
申请号：US16785117
申请日：2020-02-07
申请人： SAFRAN , Safran Nacelles
摘要： A thrust reverser cascade for an aircraft nacelle includes a plurality of blades having a first and a second surface, the blades being connected to members connected to attachment flanges for attaching the thrust reverser cascade to the nacelle. At least one of the surfaces of the blades is covered with at least one layer of fibers, each layer including a plurality of fiber pieces which are pre-impregnated with resin. The fiber pieces are superimposed on one another, positioned parallel to the aerodynamic surface of the blade and oriented in different directions.
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9.发明申请公开(公告)号：US20180148381A1
公开(公告)日：2018-05-31
申请号：US15878443
申请日：2018-01-24
申请人： Safran Nacelles
IPC分类号： C04B35/80 , C04B38/00 , F02C7/045 , G10K11/162 , C04B35/117
CPC分类号： C04B35/803 , C04B30/02 , C04B35/117 , C04B35/18 , C04B35/80 , C04B38/00 , C04B2111/52 , C04B2235/5224 , C04B2235/5228 , C04B2235/5252 , C04B2235/5256 , C04B2235/616 , F02C7/045 , F02C7/24 , F05D2300/6032 , F05D2300/6034 , G10K11/162 , Y02T50/672 , C04B38/0003
摘要： The present disclosure concerns a porous body made of a ceramic-matrix composite material for an acoustic attenuation panel and a method of manufacturing the porous body. The porous body includes a plurality of interwoven ceramic fibers, a metal oxide matrix, and a plurality of channels interwoven with the ceramic fibers and interconnected together. The channels define at least one cavity. In one form, at least one channel is wrapped around a ceramic fiber. In another form, at least one ceramic fiber and at least one channel are twisted together. In yet another form, at least one channel is wrapped around a ceramic fiber and twisted with the ceramic fiber. The present disclosure also concerns an acoustic attenuation panel including the porous body and an aircraft propulsion unit having such a panel.
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公开(公告)号：US20200180188A1
公开(公告)日：2020-06-11
申请号：US16793523
申请日：2020-02-18
申请人： SAFRAN NACELLES
摘要： A method for manufacturing a preform has a non-developable end shape having, about a longitudinal axis (A), an end overall radius of curvature (R2), and, in at least a longitudinal section, curved segments forming bending radii linking straight segments. The method includes a step of depositing successive layers giving the preform an initial substantially rotational shape having, about the longitudinal axis (A), an initial overall radius of curvature, then a step of deploying the preform by increasing the initial overall radius of curvature until the end overall radius of curvature is reached (R2), in order to close the bending radii of the curved segments.
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