CN114126288B - Equipment cabin with electromagnetic shielding function and unmanned helicopter - Google Patents
Equipment cabin with electromagnetic shielding function and unmanned helicopter Download PDFInfo
- Publication number
- CN114126288B CN114126288B CN202111382198.0A CN202111382198A CN114126288B CN 114126288 B CN114126288 B CN 114126288B CN 202111382198 A CN202111382198 A CN 202111382198A CN 114126288 B CN114126288 B CN 114126288B
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- Prior art keywords
- maintenance
- ventilation
- cover
- electromagnetic shielding
- port cover
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0213—Venting apertures; Constructional details thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/04—Helicopters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D47/00—Equipment not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U10/00—Type of UAV
- B64U10/10—Rotorcrafts
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/03—Covers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/04—Metal casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0015—Gaskets or seals
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0086—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a single discontinuous metallic layer on an electrically insulating supporting structure, e.g. metal grid, perforated metal foil, film, aggregated flakes, sintering
Abstract
The invention discloses an equipment cabin with an electromagnetic shielding function, which comprises an equipment mounting plate, a top plate, a supporting frame, a ventilation port cover, a skin and a maintenance port cover, wherein: the supporting frames are distributed at the front part and the rear part, a top plate and a mounting plate are respectively arranged at the upper part and the middle part of the supporting frames, and skins are covered outside the top plate, the mounting plate and the supporting frames to form a cabin structure; the upper part of the side surface of the cabin body is provided with a maintenance window, the lower part of the side surface of the cabin body is provided with a ventilation window, and the maintenance window cover and the ventilation window which can be opened and closed are respectively arranged on the maintenance window and the ventilation window; when the maintenance port cover and the ventilation port cover are closed, the cabin body forms a closed structure; the supporting frame is of a metal structure; the top plate, the mounting plate, the ventilation port cover, the skin and the maintenance port cover are of carbon fiber composite material structures; the outer surfaces of the top plate, the skin, the maintenance flap and the ventilation flap are metallized by adopting a lightning protection adhesive film. The electromagnetic shielding device meets the requirements of ventilation and equipment maintenance and improves the electromagnetic shielding effect of the equipment cabin.
Description
Technical Field
The invention relates to the field of aviation structure design, in particular to an equipment cabin with an electromagnetic shielding function and an unmanned helicopter.
Background
Along with the development of microwave technology and the continuous improvement of the technical levels of electronic reconnaissance, electronic countermeasure and the like, the requirements on the anti-interference capability of helicopters, particularly unmanned helicopter electronic equipment, are higher and higher, and the electromagnetic shielding capability of a fuselage becomes an important means for resisting electromagnetic interference and guaranteeing the viability of unmanned planes. The existing helicopter model structural design is insufficient in consideration of electromagnetic shielding effectiveness of the equipment cabin, and a certain helicopter is subjected to electromagnetic shielding test, so that electromagnetic leakage exists in a cockpit door, an up-down view window, an equipment hatch cover and the like except for a windshield glass, electromagnetic shielding performance requirements are not met, and electromagnetic shielding design is not performed in structural design. Unmanned helicopter installation electronic equipment is more, and the requirement to the electromagnetic shielding ability of equipment compartment is also higher. Meanwhile, in order to meet the requirements of ventilation, heat dissipation and maintenance of equipment, the openings of the equipment cabins are more, electromagnetic leakage is possible, and the difficulty of electromagnetic shielding design is increased.
Disclosure of Invention
The invention aims to provide an equipment cabin with an electromagnetic shielding function and an unmanned helicopter, which adopt reasonable measures to solve electromagnetic leakage of an opening of the equipment cabin, and simultaneously adopt a proper method to solve the problem of electromagnetic shielding of a vent, so as to finally meet the electromagnetic shielding efficiency requirement of the unmanned helicopter.
In order to realize the tasks, the invention adopts the following technical scheme:
an equipment compartment with electromagnetic shielding function, includes equipment mounting panel, roof, carriage, ventilation flap, covering and maintenance flap, wherein:
the supporting frames are distributed at the front part and the rear part, a top plate and a mounting plate are respectively arranged at the upper part and the middle part of the supporting frames, and skins are covered outside the top plate, the mounting plate and the supporting frames to form a cabin structure; the upper part of the side surface of the cabin body is provided with a maintenance window, the lower part of the side surface of the cabin body is provided with a ventilation window, and the maintenance window cover and the ventilation window which can be opened and closed are respectively arranged on the maintenance window and the ventilation window; when the maintenance port cover and the ventilation port cover are closed, the cabin body forms a closed structure;
the supporting frame is of a metal structure; the top plate, the mounting plate, the ventilation port cover, the skin and the maintenance port cover are of carbon fiber composite material structures; the carbon fiber composite material is respectively a glass fiber layer, a carbon fiber layer, a honeycomb layer and a carbon fiber layer from the outer side to the inner side; wherein, roof, covering and maintenance flap and ventilation flap surface adopt lightning protection to hit the glued membrane and realize the metallization.
Further, the lightning protection adhesive film paved on the outer layers of the ventilation port cover and the maintenance port cover is reversely wrapped to the lamination area of the inner surfaces of the ventilation port cover and the maintenance port cover from the edges, and the electromagnetic shielding adhesive tape on the ventilation port cover and the maintenance port cover is covered to serve as the bonding range of the sealing strip.
Further, the ventilating opening cover, the maintenance opening cover and the opening frame for installing the ventilating opening cover and the maintenance opening cover are respectively adhered with an electromagnetic shielding adhesive tape by using the conductive adhesive film, and the electromagnetic shielding adhesive tape is adhered with the lightning protection adhesive film at the adjacent position by using the conductive adhesive film.
Further, when the electromagnetic shielding adhesive tape is adhered, the lightning protection adhesive film needs to be polished until the metal net leaks, and a circle of conductive adhesive is smeared at the end part of the adhesive tape.
Further, the vent for air intake on the vent cover adopts a perforated metal plate which is riveted with the vent cover, and the electric lap joint between the metal plate and the vent cover is realized through rivets.
Further, the openings in the metal plate satisfy: f (f) c ＝15/w×10 9 Hz, w is the diameter of the opening in the metal plate, f c Is the cut-off frequency.
Further, S-shaped baffles are fixed on the perforated metal plate at intervals, the baffles are riveted on the perforated metal plate, and adjacent baffles are in a nested arrangement mode, so that S-shaped air channels are formed between the adjacent baffles, and the length of the S-shaped air channels is not more than 30mm.
Further, the baffle adopts a carbon fiber laminated structure, and a lightning protection film is paved on the surface of the baffle.
Compared with the prior art, the invention has the following technical characteristics:
the invention improves the electromagnetic shielding effect of the equipment cabin, reduces the electromagnetic interference of the external environment to equipment in the equipment cabin and improves the safety of the helicopter while meeting the requirements of ventilation and equipment maintenance; due to the use of a large number of composite material pieces, the weight reduction effect of the equipment cabin structure is obvious, and the weight efficiency of the structure is obviously improved. The equipment cabin structure is applied to a certain unmanned helicopter at present, and meets the index requirement through electromagnetic shielding test.
Drawings
FIG. 1 is a schematic view of the structure of the equipment bay of the present invention;
FIG. 2 is a schematic diagram of a carbon fiber composite structure;
FIG. 3 is a schematic view of the structure of the vent cover, maintenance cover and frame portions;
fig. 4 is a schematic structural view of the vent cover.
The reference numerals in the figures illustrate: 1 equipment mounting panel, 2 braced frames, 3 ventilation port covers, 4 skins, 5 maintenance port covers, 6 top plates, 7 port frames, 8 conductive adhesive films, 9 electromagnetic shielding adhesive tapes, 10 lightning protection adhesive films, 11 ventilation ports, 12 metal plates, 13 baffles and 14 air channels.
Detailed Description
Referring to the attached drawings, the invention provides an equipment cabin with an electromagnetic shielding function, and the principle of realizing the electromagnetic shielding function is that a composite material adopted by a main body component of the equipment cabin is metallized; the electromagnetic shielding adhesive tape 9 is used for solving the electromagnetic leakage problem of the opening of the equipment cabin, so that the electromagnetic shielding effect is achieved; the perforated metal plate 12 is used as the vent 11, and an electromagnetic shielding function of the vent 11 is realized by designing a similar waveguide structure inside.
The equipment cabin with the electromagnetic shielding function mainly comprises an equipment mounting plate 1, a top plate 6, a supporting frame 2, a ventilation port cover 3, a skin 4, a maintenance port cover 5 and the like, wherein:
the supporting frames 2 are distributed at the front part and the rear part, a top plate 6 and a mounting plate 1 are respectively arranged at the upper part and the middle part of the supporting frames 2, and the outer parts of the top plate 6, the mounting plate 1 and the supporting frames 2 are covered with a skin 4 to form a cabin structure; a maintenance window is arranged at the upper part of the side surface of the cabin body, a ventilation window is arranged at the lower part of the side surface of the cabin body, and a maintenance flap 5 and a ventilation flap 3 which can be opened and closed are respectively arranged on the maintenance window and the ventilation window; when the maintenance flap 5 and the ventilation flap 3 are closed, the cabin forms a closed structure.
The supporting frame 2 is of a metal structure; the top plate 6, the mounting plate 1, the ventilation port cover 3, the skin 4 and the maintenance port cover 5 are of carbon fiber composite material structures; from the outside to the inside, a glass fiber layer, a carbon fiber layer, a honeycomb layer and a carbon fiber layer are respectively arranged. The outer surfaces of the carbon fiber composite material structures of the top plate 6, the skin 4, the maintenance flap 5 and the ventilation flap 3 are metallized by adopting a lightning protection adhesive film 10, so that the weight of the structure can be reduced, the electromagnetic shielding performance requirement can be met, and the basic layering schematic is shown in figure 2; the structure of the mounting plate 1 is basically the same as that of the mounting plate 1, except that the lightning protection adhesive film 10 is not required to be arranged on the mounting plate 1.
Electromagnetic shielding design for equipment hatch cover
As shown in fig. 3, the outer layers of the vent cover 3 and the maintenance cover 5 are covered with lightning protection adhesive films 10, and the sealing strips are reversely covered on the laminated areas of the inner surfaces of the vent cover 3 and the maintenance cover 5 from the edges of the vent cover to cover the bonding ranges of the electromagnetic shielding adhesive tapes 9 on the vent cover 3 and the maintenance cover 5 as sealing strips; the vent cover 3, the maintenance cover 5 and the mouth frame 7 for installing the vent cover 3 and the maintenance cover 5 are respectively adhered with an electromagnetic shielding adhesive tape 9 by using a conductive adhesive film 8, the electromagnetic shielding adhesive tape 9 is adhered with an anti-lightning adhesive film 10 at an adjacent position by using the conductive adhesive film 8, the anti-lightning adhesive film 10 needs to be polished until a metal net leaks when the electromagnetic shielding adhesive tape 9 is adhered, and the end part of the adhesive tape is coated with a circle of conductive adhesive. The electromagnetic shielding rubber strip 9 is formed by mixing the silicon rubber with shielding materials, so that the original elasticity of the rubber materials can be maintained, and the electromagnetic shielding effectiveness requirement can be met.
The ventilation opening 11 for air intake on the ventilation opening cover 3 adopts a metal plate 12 with holes, the size of the holes of the metal plate 12 is required to be far smaller than the wavelength requirement of electromagnetic waves so as to realize electromagnetic shielding effect, f c ＝15/w×10 9 Hz, w is the diameter of the opening in the metal plate 12, f c Is the cut-off frequency. Electromagnetic waves above this cutoff frequency cannot enter the interior of the equipment compartment through the vent 11. The metal plate 12 is riveted with the vent cover 3, and an electrical lap joint with the vent cover 3 is realized by the rivet.
In order to improve the electromagnetic shielding effect and the rainproof air inlet requirement of the ventilation opening 11, S-shaped baffles 13 are fixed on the perforated metal plate 12 at intervals and riveted on the perforated metal plate 12, and adjacent baffles 13 are in a nested arrangement mode, so that S-shaped air channels 14 are formed between the adjacent baffles 13; the baffle 13 adopts a carbon fiber laminated structure, the surface is paved with a lightning protection adhesive film 10, the longer the length l of the S-shaped air duct 14 is, the more the loss of electromagnetic waves in the channel is, the electromagnetic shielding performance is improved, the S-shaped channel is connected with the ventilation cover 3 in a riveting way, and the electric lap joint is realized through rivets; in this embodiment, the length l of the S-shaped air duct 14 is not greater than 30mm. The ventilation opening 11 can realize electromagnetic shielding and ventilation and rainproof functions.
In the scheme, a composite material part in the main body structure of the equipment cabin is metallized by adopting a lightning protection adhesive film 10, and electric lap joint is realized among all components through rivets; the equipment hatch cover is electrically overlapped by adopting an electromagnetic shielding adhesive tape 9, the electromagnetic shielding adhesive tape 9 is adhered and covered with an anti-lightning adhesive film 10 which needs to be polished until a copper net leaks, and conductive adhesive is smeared on the periphery; the lightning protection adhesive film 10 on the outer side of the hatch cover of the equipment needs to be reversely wrapped to the lamination area on the inner surface of the cover, and the bonding range of the sealing adhesive tape needs to be covered. The vent 11 adopts a metal plate 12 with holes, and an S-shaped channel is arranged in the inner layer, the size of the cross section of the holes determines the passing frequency of electromagnetic waves, and the length of the S-shaped channel increases the extra loss of the electromagnetic waves and the shielding effectiveness.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced equally; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (2)
1. The utility model provides an equipment compartment with electromagnetic shield function, its characterized in that includes equipment mounting panel (1), roof (6), braced frame (2), ventilation flap (3), covering (4) and maintenance flap (5), wherein:
the supporting frames (2) are distributed at the front part and the rear part, a top plate (6) and a mounting plate (1) are respectively arranged at the upper part and the middle part of the supporting frames (2), and the outer parts of the top plate (6), the mounting plate (1) and the supporting frames (2) are covered with a skin (4) to form a cabin structure; a maintenance window is arranged at the upper part of the side surface of the cabin body, a ventilation window is arranged at the lower part of the side surface of the cabin body, and a maintenance flap (5) and a ventilation flap (3) which can be opened and closed are respectively arranged on the maintenance window and the ventilation window; when the maintenance port cover (5) and the ventilation port cover (3) are closed, the cabin body forms a closed structure;
the supporting frame (2) is of a metal structure; the top plate (6), the mounting plate (1), the ventilation port cover (3), the skin (4) and the maintenance port cover (5) are of carbon fiber composite material structures; the carbon fiber composite material is respectively a glass fiber layer, a carbon fiber layer, a honeycomb layer and a carbon fiber layer from the outer side to the inner side; the top plate (6), the skin (4), the maintenance flap (5) and the outer surfaces of the ventilation flap (3) are metallized by adopting a lightning protection adhesive film (10);
the anti-lightning adhesive film (10) is paved on the outer layers of the vent cover (3) and the maintenance cover (5), reversely wraps the inner surface lamination areas of the vent cover (3) and the maintenance cover (5) from the edges, and covers the bonding range of electromagnetic shielding adhesive tapes (9) on the vent cover (3) and the maintenance cover (5) as sealing strips;
the ventilation port cover (3), the maintenance port cover (5) and the port frame (7) for installing the ventilation port cover (3) and the maintenance port cover (5) are respectively adhered with an electromagnetic shielding adhesive tape (9) by using a conductive adhesive film (8), and the electromagnetic shielding adhesive tape (9) is adhered with the lightning protection adhesive film (10) at the adjacent position by using the conductive adhesive film (8);
when the electromagnetic shielding adhesive tape (9) is adhered, the lightning protection adhesive film (10) needs to be polished until the metal net leaks, and a circle of conductive adhesive is smeared at the end part of the adhesive tape;
the ventilation opening (11) on the ventilation opening cover (3) for air intake adopts a perforated metal plate (12), the metal plate (12) is connected with the ventilation opening cover (3) in a riveting way, and the electric lap joint between the metal plate and the ventilation opening cover (3) is realized through rivets;
the openings in the metal plate (12) satisfy: f (f) c ＝15/w×10 9 Hz, w is the diameter of the opening in the metal plate (12), f c Is the cut-off frequency;
s-shaped baffles (13) are fixed on the perforated metal plate (12) at intervals, the baffles (13) are riveted on the perforated metal plate (12), and adjacent baffles (13) are arranged in a nested mode, so that S-shaped air channels (14) are formed between the adjacent baffles (13), and the length of the S-shaped air channels (14) is not more than 30mm.
2. The equipment room with the electromagnetic shielding function according to claim 1, wherein the baffle (13) adopts a carbon fiber laminated structure, and the surface of the baffle is covered with a lightning protection adhesive film (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111382198.0A CN114126288B (en) | 2021-11-19 | 2021-11-19 | Equipment cabin with electromagnetic shielding function and unmanned helicopter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111382198.0A CN114126288B (en) | 2021-11-19 | 2021-11-19 | Equipment cabin with electromagnetic shielding function and unmanned helicopter |
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| Publication Number | Publication Date |
|---|---|
| CN114126288A CN114126288A (en) | 2022-03-01 |
| CN114126288B true CN114126288B (en) | 2023-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111382198.0A Active CN114126288B (en) | 2021-11-19 | 2021-11-19 | Equipment cabin with electromagnetic shielding function and unmanned helicopter |
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| CN (1) | CN114126288B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103552296A (en) * | 2013-11-05 | 2014-02-05 | 中航复合材料有限责任公司 | Electric conducting layer for lightning protection as well as preparation method thereof |
| CN208128767U (en) * | 2018-05-18 | 2018-11-20 | 郑州佛光发电设备有限公司 | A kind of electromagnetic armouring structure at carbon fiber skin big board square cabin carriage body overlapping the slot |
| CN109327987A (en) * | 2017-08-01 | 2019-02-12 | 中国航空工业集团公司西安飞机设计研究所 | A kind of electromagnetic shielding sealing strip |
| CN110901879A (en) * | 2019-12-04 | 2020-03-24 | 中国直升机设计研究所 | Ventilation rainproof cover |
| CN111432589A (en) * | 2020-04-30 | 2020-07-17 | 中国直升机设计研究所 | Avionics equipment cabin with ventilation loop |
| CN112072335A (en) * | 2020-09-25 | 2020-12-11 | 中国直升机设计研究所 | Conductive structure between composite material structural members and conductive processing method |
| CN112236363A (en) * | 2018-06-07 | 2021-01-15 | 3M创新有限公司 | Lightning protection film |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101319488B1 (en) * | 2012-01-06 | 2013-10-17 | 한국전자통신연구원 | Vent structure for electromagnetic shielding |
-
2021
- 2021-11-19 CN CN202111382198.0A patent/CN114126288B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103552296A (en) * | 2013-11-05 | 2014-02-05 | 中航复合材料有限责任公司 | Electric conducting layer for lightning protection as well as preparation method thereof |
| CN109327987A (en) * | 2017-08-01 | 2019-02-12 | 中国航空工业集团公司西安飞机设计研究所 | A kind of electromagnetic shielding sealing strip |
| CN208128767U (en) * | 2018-05-18 | 2018-11-20 | 郑州佛光发电设备有限公司 | A kind of electromagnetic armouring structure at carbon fiber skin big board square cabin carriage body overlapping the slot |
| CN112236363A (en) * | 2018-06-07 | 2021-01-15 | 3M创新有限公司 | Lightning protection film |
| CN110901879A (en) * | 2019-12-04 | 2020-03-24 | 中国直升机设计研究所 | Ventilation rainproof cover |
| CN111432589A (en) * | 2020-04-30 | 2020-07-17 | 中国直升机设计研究所 | Avionics equipment cabin with ventilation loop |
| CN112072335A (en) * | 2020-09-25 | 2020-12-11 | 中国直升机设计研究所 | Conductive structure between composite material structural members and conductive processing method |
Non-Patent Citations (1)
| Title |
|---|
| 飞机复合材料用防雷击胶膜的应用研究;郑超;《应用科技》;95 * |
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