CN117594973A - Lightning protection device of airborne short wave antenna - Google Patents
Lightning protection device of airborne short wave antenna Download PDFInfo
- Publication number
- CN117594973A CN117594973A CN202311584994.1A CN202311584994A CN117594973A CN 117594973 A CN117594973 A CN 117594973A CN 202311584994 A CN202311584994 A CN 202311584994A CN 117594973 A CN117594973 A CN 117594973A
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- CN
- China
- Prior art keywords
- lightning
- protection device
- antenna
- short wave
- lightning protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003365 glass fiber Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/285—Aircraft wire antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Aerials (AREA)
Abstract
The invention relates to an airborne short wave antenna lightning protection device which comprises an antenna housing, a lightning shunt strip and a conductive button, wherein the antenna housing is provided with a lightning shielding device; the bottom of the antenna housing is connected with a grounding wire; the lightning shunt strip is arranged on the outer surface of the antenna housing and consists of more than one conductive buttons which are arranged at equal intervals; more than one conductive button are respectively connected with each other through high-resistance materials so as to provide a channel for electrostatic charges; the lower parts of the more than one conductive buttons are fixed with each other by adopting glass fiber strips, and the glass fiber strips are adhered to the outer surface of the radome as a base band; one end of the lightning diverter strip is connected to a ground wire and is connected to the aircraft fuselage by the ground wire. The lightning shunt strip has the advantages of forming a space position of a head-on pilot while allowing electromagnetic waves to penetrate through the radome, reducing the probability of perforation of the radome caused by lightning attachment, realizing lightning protection of a short wave antenna and guaranteeing flight safety of an airplane.
Description
Technical Field
The invention belongs to the technical field of electric basic electric element antennas, and particularly relates to an airborne short wave antenna lightning protection device.
Background
The aircraft can not encounter lightning environment when flying in the atmosphere, and the flight accident caused by extremely high lightning voltage and lightning current occurs, so that certain potential safety hazards are brought to the normal flight of the aircraft, and the lightning protection of the aircraft is indispensable. The lightning protection of the airborne radome is an indispensable part in the design of the lightning protection of the aircraft, the button type lightning shunt strip is a key component of the lightning protection of the radome, the wave transmission efficiency of the shunt strip is high, and the lightning protection of the short wave antenna can be realized on the premise of not affecting the radiation performance of the antenna. Under the prior art, components such as a gas discharge tube, a piezoresistor, a TVS and a TSS are all lightning effect protection devices which are commonly used at present, but the protection devices have the defects of large design overall dimension, high cost, general protection effect and the like in order to meet the power capacity required by an antenna.
Disclosure of Invention
The invention aims to solve the problems of large size, high cost and common protection effect of the traditional lightning protection device, and provides the lightning diversion strip which has reasonable structural design and simple structure and low cost, and the lightning diversion strip has the advantage of forming a space position of a head-on pilot while allowing electromagnetic waves to penetrate through the radome, thereby reducing the probability of perforation of the radome caused by lightning attachment, realizing the lightning protection of a short wave antenna and ensuring the flight safety of an airplane.
The technical scheme of the invention is as follows:
the airborne short wave antenna lightning protection device comprises an antenna housing, a lightning shunt strip and a conductive button; the antenna housing is covered outside the antenna, and the bottom of the antenna housing is connected with a grounding wire; the lightning shunt strip is matched with the outer surface of the antenna housing and consists of more than one conductive buttons which are equidistantly arranged at intervals; more than one of the conductive buttons are respectively interconnected by a highly resistive material to provide a path for electrostatic charge; more than one conductive buttons are fixed with each other below the conductive buttons by glass fiber strips, and the glass fiber strips are adhered to the outer surface of the radome as a base band; one end of the lightning diverter strip is connected to the ground wire and is connected to the aircraft fuselage through the ground wire.
The lightning protection device of the airborne short wave antenna, wherein: the distance between adjacent conductive buttons is 0.2-0.5 mm.
The lightning protection device of the airborne short wave antenna, wherein: the diameter of the conductive button is 1.5mm.
The lightning protection device of the airborne short wave antenna, wherein: the lightning current dividing strips are two, and each lightning current dividing strip is composed of more than one conductive buttons which are coaxial from top to bottom and are equidistantly spaced.
The lightning protection device of the airborne short wave antenna, wherein: the conductive button is a metal sheet with the thickness of 0.1-0.5 mm; and the foil is made of titanium.
The lightning protection device of the airborne short wave antenna, wherein: the glass fiber strips are made of polytetrafluoroethylene.
The lightning protection device of the airborne short wave antenna, wherein: the working frequency band of the antenna is 2 MHz-30 MHz.
The lightning protection device of the airborne short wave antenna, wherein: the radome is of a cylindrical structure and is made of epoxy glass fiber composite materials.
The beneficial effects are that:
the lightning protection device of the airborne short wave antenna is reasonable in structural design, and lightning current diversion strips formed by the conductive buttons are arranged on the outer surface of the radome, so that the lightning current diversion strips have the advantage of forming a space position of a head-on pilot while allowing electromagnetic waves to penetrate through the radome, and the probability of perforation of the radome caused by lightning attachment is reduced.
The lightning diverter strips are arranged on the surface of the radome, so that the lightning diverter strips are simple to operate and low in cost. The antenna of the invention works in the frequency range of 2 MHz-30 MHz, realizes the communication function and has the characteristic of lightning protection. Meanwhile, the button type shunt strip has the characteristics of good wave permeability, light weight, convenience in installation and the like, can be widely applied to lightning protection of an aircraft radome, and has the characteristics of simplicity in operation and low cost while realizing lightning protection of a short wave antenna.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an airborne short wave antenna lightning protection device of the invention;
fig. 2 is a schematic structural diagram of a conductive button of the lightning protection device of the airborne short wave antenna of the invention;
fig. 3 is a schematic longitudinal section structure of the conductive button in fig. 2 of the airborne short wave antenna lightning protection device of the invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 3 of the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 3, the lightning protection device of the airborne short wave antenna comprises a radome 1, a lightning shunt strip 2, a glass fiber strip 3, a high-resistance material 4, a conductive button 5 and a grounding wire 6.
The radome 1 is of a cylindrical structure, is made of epoxy glass fiber composite material, has good insulativity and heat insulation, and is connected with a grounding wire 6 at the bottom.
The lightning current dividing strips 2 are provided with a pair of lightning current dividing strips and are matched and distributed on the outer surface of the radome 1, and each lightning current dividing strip 2 consists of a plurality of conductive buttons 5 which are coaxial from top to bottom and are spaced at a certain distance; a plurality of conductive buttons 5 are each interconnected by a highly resistive material 4 to provide a path for electrostatic charge.
One end of the lightning shunt strip 2 is connected to the ground wire 6 and is connected to the aircraft body through the ground wire 6, and in a lightning environment, when the aircraft encounters a lightning strike, huge lightning current enters the aircraft body skin through an arc channel, so that lightning is prevented from being attached to a metal structure in the antenna housing 1, and the flight safety of the aircraft is ensured.
A very thin glass fiber strip 3 is arranged below the conductive buttons 5 to fasten a plurality of conductive buttons 5; the fiberglass rod 3 is adhered as a base tape to the outer surface of the radome 1, and the fiberglass rod 3 is made of polytetrafluoroethylene.
The distance between adjacent conductive buttons 5 is 0.2-0.5 mm, the diameter of each conductive button 5 is 1.5mm, and the distance between the conductive buttons 5 in the embodiment is 0.2mm; the conductive button 2 is a metal sheet with a thickness of 0.1-0.5 mm, and in this embodiment, the conductive button 2 is a metal sheet with a thickness of 0.3mm, and the metal sheet is made of titanium.
The lightning diverter strip with simple structure and low cost is adopted in the invention, so that the lightning protection of the short wave antenna is realized, and meanwhile, the lightning diverter strip has the characteristics of simple operation and low cost.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (8)
1. The utility model provides an airborne shortwave antenna lightning protection device which characterized in that: the protection device comprises an antenna housing (1), a lightning shunt strip (2) and a conductive button (5);
the antenna housing (1) is covered outside the antenna, and the bottom of the antenna housing is connected with a grounding wire (6);
the lightning shunt strip (2) is matched with the outer surface of the antenna housing (1) and consists of more than one conductive buttons (5) which are equidistantly arranged at intervals; more than one of said conductive buttons (5) are respectively interconnected by a highly resistive material (4) so as to provide a path for electrostatic charges;
more than one conductive buttons (5) are fixed with each other by glass fiber strips (3), and the glass fiber strips (3) are adhered to the outer surface of the radome (1) as a base band;
one end of the lightning diverter strip (2) is connected to the ground wire (6) and to the aircraft fuselage via the ground wire (6).
2. The airborne short wave antenna lightning protection device of claim 1, wherein: the distance between two adjacent conductive buttons (5) is 0.2-0.5 mm.
3. The airborne short wave antenna lightning protection device of claim 2, wherein: the diameter of the conductive button (5) is 1.5mm.
4. The airborne short wave antenna lightning protection device of claim 1, wherein: the lightning current diverting strips (2) are two, and each lightning current diverting strip (2) is composed of more than one conductive button (5) which are coaxial from top to bottom and are equidistantly spaced.
5. The airborne short wave antenna lightning protection device of claim 1, wherein: the conductive button (2) is a metal sheet with the thickness of 0.1-0.5 mm; and the foil is made of titanium.
6. The airborne short wave antenna lightning protection device of claim 1, wherein: the glass fiber strips (3) are made of polytetrafluoroethylene.
7. The airborne short wave antenna lightning protection device of claim 1, wherein: the working frequency band of the antenna is 2 MHz-30 MHz.
8. The airborne short wave antenna lightning protection device of claim 1, wherein: the antenna housing (1) is of a cylindrical structure and is made of epoxy glass fiber composite materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311584994.1A CN117594973A (en) | 2023-11-24 | 2023-11-24 | Lightning protection device of airborne short wave antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311584994.1A CN117594973A (en) | 2023-11-24 | 2023-11-24 | Lightning protection device of airborne short wave antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117594973A true CN117594973A (en) | 2024-02-23 |
Family
ID=89909569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311584994.1A Pending CN117594973A (en) | 2023-11-24 | 2023-11-24 | Lightning protection device of airborne short wave antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117594973A (en) |
-
2023
- 2023-11-24 CN CN202311584994.1A patent/CN117594973A/en active Pending
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| PB01 | Publication | ||
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