CN108516075B - Cabin noise reduction isolation plate based on passive flow control and cabin noise reduction method - Google Patents
Cabin noise reduction isolation plate based on passive flow control and cabin noise reduction method Download PDFInfo
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- CN108516075B CN108516075B CN201810237654.4A CN201810237654A CN108516075B CN 108516075 B CN108516075 B CN 108516075B CN 201810237654 A CN201810237654 A CN 201810237654A CN 108516075 B CN108516075 B CN 108516075B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/40—Sound or heat insulation, e.g. using insulation blankets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
- B32B3/085—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts spaced apart pieces on the surface of a layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/06—Open cell foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/18—Aircraft
Abstract
The invention relates to a cabin noise reduction isolation plate based on passive flow control, which comprises an inner adsorption layer (1), an inner attenuation layer (2), an isolation buffer layer (3), a noise reduction absorption layer (4), an outer attenuation layer (5) and an outer adsorption layer (6) which are arranged in sequence, and is characterized in that: the inner side attenuation layer (2) is connected with the noise reduction absorption layer (4) through a saw-toothed structure, the noise reduction absorption layer (4) is connected with the outer side attenuation layer (5), an isolation buffer layer (3) is fixedly arranged at the tip part of a saw-toothed tooth between the noise reduction absorption layer (4) and the outer side attenuation layer (5), the isolation buffer layer (3) is in angular contact with the noise reduction absorption layer (4), and the isolation buffer layer (3) is in circular arc contact with the outer side attenuation layer (5); under the prerequisite of guaranteeing noise reduction effect, increased the inside available space in cabin, guaranteed passenger's the space of taking, improve and take comfort level and satisfaction.
Description
Technical Field
The invention relates to a cabin noise reduction isolation plate and a cabin noise reduction method, in particular to a cabin noise reduction isolation plate based on passive flow control and a cabin noise reduction method.
Background
The noise generated by the aircraft mainly comes from two aspects, namely the noise generated by the operation of an aircraft engine on one hand and the noise generated by the friction between an aircraft body and the atmosphere when the aircraft flies at a high speed on the other hand, and the technologies applied to the aircraft for reducing the noise in the prior art can be divided into an active noise reduction technology and a passive noise reduction technology, wherein the active noise reduction technology mainly aims at the improvement of the technology of the noise generating part of the aircraft engine, such as the research on engine materials, shell shapes, air flow mixing and the like; and passive technique of making an uproar of falling mainly falls the sound, gives sound insulation and the amortization measure to the noise acceptor, whether can divide into fixed control again according to the technique of making an uproar of falling and fall the technique of making an uproar and flow control and fall the technique of making an uproar, and passive technique of making an uproar of falling among the prior art is when realizing making an uproar, selects fixed additional soundproof material mostly, when having increased the inside occupation space in cabin, has reduced passenger's the space of taking, reduces comfort level and satisfaction of taking.
Disclosure of Invention
The technical problem to be solved by the invention is; in order to overcome the defects and shortcomings in the prior art, the invention provides the cabin noise reduction isolation plate based on passive flow control and the cabin noise reduction method, which increase the available space in the cabin, ensure the passenger riding space and improve the riding comfort and satisfaction on the premise of ensuring the noise reduction effect.
The technical scheme adopted by the invention for solving the technical problems is as follows: the cabin noise reduction isolation plate based on passive flow control comprises an inner adsorption layer, an inner attenuation layer, an isolation buffer layer, a noise reduction absorption layer, an outer attenuation layer and an outer adsorption layer which are sequentially arranged, wherein the noise reduction absorption layer is fixedly arranged between the inner adsorption layer and the outer adsorption layer, the inner attenuation layer is arranged between the inner adsorption layer and the noise reduction absorption layer, and the outer attenuation layer is fixedly arranged between the noise reduction absorption layer and the outer adsorption layer; the method is characterized in that: the inner side attenuation layer is connected with the noise reduction absorption layer through sawteeth, the noise reduction absorption layer is connected with the outer side attenuation layer through sawteeth, an isolation buffer layer is fixedly arranged at the tip of the sawteeth between the noise reduction absorption layer and the outer side attenuation layer, the isolation buffer layer is in contact with the noise reduction absorption layer through edges and corners, and the isolation buffer layer is in contact with the outer side attenuation layer through arcs.
Further, obtuse-angle contact is formed between the isolation buffer layer and the noise reduction absorption layer.
Further, the inner side adsorption layer and the outer side adsorption layer are made of film-shaped canvas or varnished cloth materials.
Furthermore, the inner side attenuation layer and the outer side attenuation layer are made of foam plastics.
Furthermore, transverse through holes are uniformly distributed in the inner side attenuation layer, and the axes of the transverse through holes are parallel to the plane where the inner side adsorption layer and the outer side adsorption layer are located.
Furthermore, longitudinal through holes are uniformly distributed in the outer side attenuation layer, and the axes of the longitudinal through holes are perpendicular to the plane where the inner side adsorption layer and the outer side adsorption layer are located.
Furthermore, the noise reduction and absorption layer is made of honeycomb perforated sound absorption materials.
Furthermore, the isolation buffer layer is made of sound-absorbing flexible materials.
Further, the invention also provides a cabin noise reduction method based on passive flow control, which is characterized in that: the method comprises the following steps:
(1) the cabin noise reduction isolation plate based on passive flow control is fixedly installed at the positions of an underfoot cushion plate, a seat back plate and an armrest of a passenger, and the isolation plate is located at an initial position when the cabin noise reduction isolation plate does not work;
(2) respectively embedding pressure sensors into the upper surfaces of the underfoot cushion plate, the seat back plate and the cabin noise reduction isolation plate arranged at the positions of the armrests in the step (1);
(3) when a passenger sits on the seat, the pressure sensors respectively send pressure signals detected by the pressure sensors to a controller arranged below the seat, and reliability judgment is carried out in the controller to determine that a detection result is available; then, counting the determined available pressure signals through a counter in the controller, and if and only if the count is greater than or equal to a preset value in the controller, moving the isolation plate to a working position through a conveying device to start working;
(4) when the passengers leave the seats, the flight crew uniformly controls all the cabin noise reduction isolation plates to return to the initial positions.
The invention has the advantages that;
(1) on the premise of ensuring the noise reduction effect, the available space in the cabin is increased, the riding space of passengers is ensured, and the riding comfort and satisfaction are improved;
(2) the inner side attenuation layer, the noise reduction absorption layer and the outer side attenuation layer are arranged to be in a sawtooth shape, so that the contact area between the inner side attenuation layer and the noise reduction absorption layer and between the noise reduction absorption layer and the outer side attenuation layer is increased, the noise reduction amount in unit time is increased, and the noise reduction effect is improved;
(3) keep apart the buffer layer and fall to make an uproar between the absorbed layer for the edges and corners contact, keep apart and be the circular arc contact between buffer layer and the outside decay layer, thereby can not cause the damage to the inside structure of making an uproar because the passenger takes a seat the front and back to falling the division board extrusion of making an uproar.
(4) The controller is used for judging the internal reliability of the controller and counting the determined available pressure signals through the counter, and if and only if the counting is larger than or equal to the preset value in the controller, the isolation plate is moved to a working position through the conveying device to start working, so that the passenger riding space is effectively ensured, and the riding comfort and the satisfaction are improved.
Drawings
FIG. 1 is a schematic structural diagram of a cabin noise reduction isolation plate based on passive flow control according to the present invention;
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, the cabin noise reduction isolation plate based on passive flow control comprises an inner adsorption layer 1, an inner attenuation layer 2, an isolation buffer layer 3, a noise reduction absorption layer 4, an outer attenuation layer 5 and an outer adsorption layer 6 which are sequentially arranged, wherein the noise reduction absorption layer 4 is fixedly arranged between the inner adsorption layer 1 and the outer adsorption layer 6, the inner attenuation layer 2 is arranged between the inner adsorption layer 1 and the noise reduction absorption layer 4, and the outer attenuation layer 5 is fixedly arranged between the noise reduction absorption layer 4 and the outer adsorption layer 6; the method is characterized in that: the inner side attenuation layer 2 is connected with the noise reduction absorption layer 4 through the saw-toothed structure, the contact area between the noise reduction absorption layer and the outer side attenuation layer is increased, the noise reduction amount in unit time is increased, and therefore the noise reduction effect is improved.
Specifically, the isolation buffer layer 3 and the noise reduction absorption layer 4 are in obtuse contact, so that the supporting effect between the isolation buffer layer 3 and the noise reduction absorption layer 4 is further improved.
Specifically, the inner side adsorption layer 1 and the outer side adsorption layer 6 are made of film-shaped canvas or varnished cloth materials, so that the sound absorption effect is realized through the action of a film.
Specifically, the inner side attenuation layer 2 and the outer side attenuation layer 5 are made of foam plastics, so that the sound absorption effect is realized through the porosity of the foam plastics.
Specifically, transverse through holes are uniformly distributed in the inner side attenuation layer 2, and the axes of the transverse through holes are parallel to the plane where the inner side adsorption layer 1 and the outer side adsorption layer 6 are located.
Specifically, longitudinal through holes are uniformly distributed in the outer side attenuation layer 5, and the axes of the longitudinal through holes are perpendicular to the planes of the inner side adsorption layer 1 and the outer side adsorption layer 6, so that sound energy is uniformly transmitted to the serrated noise reduction absorption layer 4 in different horizontal and longitudinal modes, the sound energy absorbed in unit length and the noise reduction amount in unit time are increased, and the noise reduction effect is improved.
Specifically, the noise reduction and absorption layer 4 is made of a honeycomb perforated sound absorption material.
Specifically, keep apart buffer layer 3 and select for use sound absorption flexible material to realize the cushioning effect, thereby can not cause the damage to the structure of making an uproar of falling to the division board extrusion of making an uproar to falling because of the passenger takes a seat around.
Specifically, the application further comprises a cabin noise reduction method based on passive flow control, which comprises the following steps:
(1) the cabin noise reduction isolation plate based on the passive flow control is fixedly installed at the positions of an underfoot cushion plate, a seat back plate and an armrest of a passenger, and the isolation plate is located at an initial position when the cabin noise reduction isolation plate does not work;
(2) respectively embedding pressure sensors into the upper surfaces of the underfoot cushion plate, the seat back plate and the cabin noise reduction isolation plate arranged at the positions of the armrests in the step (1);
(3) when a passenger sits on the seat, the pressure sensors respectively send pressure signals detected by the pressure sensors to a controller arranged below the seat, and reliability judgment is carried out in the controller to determine that a detection result is available; then, counting the determined available pressure signals through a counter in the controller, and if and only if the count is greater than or equal to a preset value in the controller, moving the isolation plate to a working position through a conveying device to start working;
(4) when the passengers leave the seats, the aircrew uniformly control all the cabin noise reduction isolation plates to return to the initial positions, so that the passenger riding space is effectively ensured, and the riding comfort and satisfaction are improved.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (2)
1. The cabin noise reduction isolation plate based on passive flow control comprises an inner adsorption layer (1), an inner attenuation layer (2), an isolation buffer layer (3), a noise reduction absorption layer (4), an outer attenuation layer (5) and an outer adsorption layer (6) which are sequentially arranged, wherein the noise reduction absorption layer (4) is fixedly arranged between the inner adsorption layer (1) and the outer adsorption layer (6), the inner attenuation layer (2) is arranged between the inner adsorption layer (1) and the noise reduction absorption layer (4), and the outer attenuation layer (5) is fixedly arranged between the noise reduction absorption layer (4) and the outer adsorption layer (6); the method is characterized in that: the inner side attenuation layer (2) is connected with the noise reduction absorption layer (4) through a saw-toothed structure, the noise reduction absorption layer (4) is connected with the outer side attenuation layer (5), an isolation buffer layer (3) is fixedly arranged at the tip part of a saw-toothed tooth between the noise reduction absorption layer (4) and the outer side attenuation layer (5), the isolation buffer layer (3) is in angular contact with the noise reduction absorption layer (4), and the isolation buffer layer (3) is in circular arc contact with the outer side attenuation layer (5);
the isolation buffer layer (3) is in obtuse contact with the noise reduction absorption layer (4);
the inner side adsorption layer (1) and the outer side adsorption layer (6) are made of film-shaped canvas or varnished cloth materials;
the inner side attenuation layer (2) and the outer side attenuation layer (5) are made of foam plastics;
transverse through holes are uniformly distributed in the inner side attenuation layer (2), and the axes of the transverse through holes are parallel to the plane where the inner side adsorption layer (1) and the outer side adsorption layer (6) are located;
longitudinal through holes are uniformly distributed in the outer side attenuation layer (5), and the axes of the longitudinal through holes are vertical to the plane where the inner side adsorption layer (1) and the outer side adsorption layer (6) are located;
the noise reduction and absorption layer (4) is made of honeycomb perforated sound absorption material;
the isolation buffer layer (3) is made of sound-absorbing flexible materials.
2. The cabin noise reduction method based on the passive flow control is characterized by comprising the following steps: the method comprises the following steps:
(1) fixedly mounting the cabin noise reduction isolation plate based on passive flow control according to claim 1 at the positions of an underfoot cushion plate, a seat back plate and an armrest of a passenger, wherein the isolation plate is located at an initial position when not in operation;
(2) respectively embedding pressure sensors into the upper surfaces of the underfoot cushion plate, the seat back plate and the cabin noise reduction isolation plate arranged at the positions of the armrests in the step (1);
(3) when a passenger sits on the seat, the pressure sensors respectively send pressure signals detected by the pressure sensors to a controller arranged below the seat, and reliability judgment is carried out in the controller to determine that a detection result is available; then, counting the determined available pressure signals through a counter in the controller, and if and only if the count is greater than or equal to a preset value in the controller, moving the isolation plate to a working position through a conveying device to start working;
(4) when the passengers leave the seats, the flight crew uniformly controls all the cabin noise reduction isolation plates to return to the initial positions.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810237654.4A CN108516075B (en) | 2018-03-22 | 2018-03-22 | Cabin noise reduction isolation plate based on passive flow control and cabin noise reduction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810237654.4A CN108516075B (en) | 2018-03-22 | 2018-03-22 | Cabin noise reduction isolation plate based on passive flow control and cabin noise reduction method |
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| CN108516075A CN108516075A (en) | 2018-09-11 |
| CN108516075B true CN108516075B (en) | 2021-07-02 |
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| CN110164410B (en) * | 2019-04-15 | 2021-08-10 | 浙江大学 | Fixed-length steel wire rope sound insulation and vibration isolation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006039379A (en) * | 2004-07-29 | 2006-02-09 | Nishikawa Rubber Co Ltd | Sound insulating sheet |
| CN105083529A (en) * | 2014-05-07 | 2015-11-25 | 哈尔滨飞机工业集团有限责任公司 | In-cabin decoration plate structure capable of absorbing sound and reducing noise |
| US10657946B2 (en) * | 2016-02-19 | 2020-05-19 | Edward Gentile | Device for absorbing sound within the cabin of vehicle |
| CN205736242U (en) * | 2016-06-29 | 2016-11-30 | 北京嘉诚兴业工贸有限公司 | Cabin sound-heat insulated cushion |
| JP6898773B2 (en) * | 2016-07-05 | 2021-07-07 | 西川ゴム工業株式会社 | Noise reduction member for fender |
| US9779715B1 (en) * | 2016-07-26 | 2017-10-03 | Hexcel Corporation | Method for making contoured acoustic structures |
| CN106494012B (en) * | 2016-09-30 | 2018-06-12 | 哈尔滨工程大学 | Zigzag high damping alloy plate based on interfacial effect |
| CN106672201A (en) * | 2016-12-15 | 2017-05-17 | 中国航空工业集团公司西安飞机设计研究所 | Heat-insulating noise-reduction wall plate structure for airplane compartment |
| CN207045683U (en) * | 2017-08-04 | 2018-02-27 | 中国航空工业集团公司西安飞机设计研究所 | A kind of cabin noise control interior structure |
| CN107804046B (en) * | 2017-09-18 | 2019-11-12 | 航天材料及工艺研究所 | A kind of composite material sound-deadening and noise-reducing sound lining and preparation method thereof |
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