CN214986115U - Novel lightning stroke protection structure of composite material integral oil tank non-bearing opening cover - Google Patents
Novel lightning stroke protection structure of composite material integral oil tank non-bearing opening cover Download PDFInfo
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- CN214986115U CN214986115U CN202023276827.5U CN202023276827U CN214986115U CN 214986115 U CN214986115 U CN 214986115U CN 202023276827 U CN202023276827 U CN 202023276827U CN 214986115 U CN214986115 U CN 214986115U
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Abstract
The utility model discloses a novel lightning stroke protective structure of whole oil tank non-load flap of combined material, include: the non-bearing port cover of the oil tank, the engine body wall plate, the butt joint area and the lightning protection surface film; a cover butt joint area assembly is arranged on the periphery of the non-bearing cover of the oil tank, the cover butt joint area assembly is arranged to be of a groove structure with a sunken interface, a wall plate butt joint area is arranged at the end part of a wall plate of the engine body, and the wall plate butt joint area is in butt joint with the non-bearing cover of the oil tank by being embedded into the groove structure; the local reinforced lightning protection surface film is laid in the butt joint area and the peripheral area of the butt joint area, and the global lightning protection surface film is laid on the engine body wall plate and has a lap joint area with the local reinforced lightning protection surface film. The embodiment of the utility model provides a solved the lightning protection structure of traditional aircraft flap, fracture or damage appear when the overlap joint line, are difficult to realize the phenomenon of effective lightning protection to lead to the problem of fatal damage to appear in the aircraft.
Description
Technical Field
The utility model relates to a but not limited to aircraft wing structure technical field indicates a lightning stroke protective structure of novel non-load flap of whole oil tank of combined material especially.
Background
Lightning current flowing through the aircraft can strike sparks at the interface of the poorly overlapped structures.
The traditional method of avoiding lightning damage is to use a crossover wire, for example, one or more copper wires or an aluminum wire with a cross section having a comparable impact current carrying capacity to connect the port cover and the aircraft body to form a low impedance crossover passage. The above method is easy to implement in design, but is also problematic in that if the crossover is broken or damaged, fatal damage may occur to the aircraft upon lightning.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: an embodiment of the utility model provides a novel lightning protection structure of non-load flap of whole oil tank of combined material to solve the lightning protection structure of traditional aircraft flap, fracture or damage appear when the overlap joint line, be difficult to realize the phenomenon of effective lightning protection, thereby lead to the problem of fatal damage to appear in the aircraft.
The technical scheme of the utility model is that: the embodiment of the utility model provides a novel lightning stroke protective structure of non-load flap of whole oil tank of combined material, include: the lightning protection device comprises an oil tank non-bearing port cover, a machine body wall plate 6 and a lightning protection surface film, wherein the oil tank non-bearing port cover and the machine body wall plate 6 are provided with butt joint areas;
a cover butt joint area assembly is arranged on the periphery of the oil tank non-bearing cover, the cover butt joint area assembly is of a groove structure with a sunken interface, the end part of the engine body wall plate 6 is provided with a wall plate butt joint area with the oil tank non-bearing cover, and the wall plate butt joint area enables the engine body wall plate 6 to be in butt joint with the oil tank non-bearing cover by being embedded into the groove structure;
the lightning protective surface film comprises: local reinforcing lightning protection surface film 4 and global lightning protection surface film 5, local reinforcing lightning protection surface film 4 is laid in the peripheral zone of the butt joint region of non-bearing mouth cap of oil tank and organism wallboard 6 and butt joint region, and global lightning protection surface film 5 is laid on organism wallboard 6, and has the overlap joint region with local reinforcing lightning protection surface film 4.
Optionally, in the lightning stroke protection structure of the non-bearing port cover of the novel composite material integral oil tank,
a step is arranged between the wall plate butt joint area of the machine body wall plate 6 and the integral wall plate, so that when the butt joint area is embedded into the groove structure of the cover butt joint area component, the upper edge end face of the groove structure is opposite to the step in position and has a gap;
the local reinforced lightning protection surface film 4 is specifically laid on a wall plate butt joint area and a machine body wall plate 6 on the periphery of the step, part of the local reinforced lightning protection surface film is positioned between the upper edge of the groove structure and the wall plate butt joint area, and part of the local reinforced lightning protection surface film is laid on the machine body wall plate 6 on the upper portion of the step through a gap between the groove structure and the step.
Optionally, in the lightning protection structure of the non-bearing port cover of the novel composite material integral fuel tank, the lightning protection structure further includes: an aluminum alloy braided gasket 3;
the aluminum alloy woven pad 3 is laid in the groove structure of the covering cap butt joint area component, is located between the upper edge of the groove structure and the wall plate butt joint area, and has a lap joint area with the local reinforced lightning protection surface film 4.
Optionally, in the lightning protection structure of the non-bearing flap of the novel composite integral fuel tank as described above, the flap abutting area assembly includes: a non-bearing inner cover 10 and a non-bearing outer cover 1;
the non-bearing outer cover 1 is of a flat plate structure, the non-bearing inner cover 10 is provided with a flat plate region and a sunken region, the flat plate region of the non-bearing inner cover 10 is attached to the bottom of the non-bearing outer cover 1, so that the sunken region of the non-bearing inner cover 10 and a port of the non-bearing outer cover 1 form the groove structure for butting with the body wall plate 6 and laying a lightning protection surface film;
electric lap joint areas are reserved on the non-bearing inner opening cover 10 and the non-bearing outer opening cover 1, and the aluminum alloy woven liner is specifically laid between the non-bearing inner opening cover 10 and the non-bearing outer opening cover 1 and between the non-bearing outer opening cover 1 and a wall plate butt joint area.
Optionally, in the lightning stroke protection structure of the non-bearing port cover of the novel composite material integral oil tank,
the groove structure formed by the non-bearing inner cover 10 and the non-bearing outer cover 1 is provided with a through hole, the non-bearing inner cover 10 and the non-bearing outer cover 1 are connected through a countersunk head bolt 2 penetrating through the through hole, and the end part of the countersunk head bolt 2 is fixed through a supporting plate nut 9 and is packaged by a fastener.
Optionally, in the lightning protection structure of the non-bearing flap of the novel composite integral fuel tank as described above, the flap docking area assembly further includes: a sealing rubber ring 8;
the sealing rubber ring 8 is arranged between the joint area assembly of the opening cover and the joint area of the wall plate of the machine body wall plate 6, and is specifically arranged between the lower edge of the groove structure and the joint area of the wall plate.
Optionally, in the lightning protection structure of the non-bearing flap of the novel composite integral fuel tank as described above, the flap docking area assembly further includes: a phenolic aldehyde backing plate 7;
the phenolic aldehyde backing plate 7 is arranged between the lower edge of the groove structure and the butt joint area of the wall plate, is positioned on the outer side of the sealing rubber ring 8 and is used for isolating the non-bearing inner opening cover 10 from the machine body wall plate 6.
Optionally, in the lightning stroke protection structure of the non-bearing port cover of the novel composite material integral oil tank,
the local reinforced lightning protection surface film 4 and the global lightning protection surface film 5 both adopt integral copper sheets, a plurality of small holes are punched in the copper sheets, net-shaped protection films are formed by stretching, and the copper net thickness of the local reinforced lightning protection surface films obtained by stretching is larger than that of the global lightning protection surface films.
The utility model has the advantages that: the embodiment of the utility model provides a lightning stroke protection structure of a novel composite material integral oil tank non-bearing cover, which is characterized in that a local reinforced lightning protection surface film 4 arranged in a butt joint area of the oil tank non-bearing cover and an engine body wallboard 6 is conducted with a global lightning protection surface film 5 on the outer surface of a covering by the local reinforced lightning protection surface film 4 in the butt joint area of the cover, so as to form a conductive path; compared with the lightning protection structure of one or many wire lap-joint forms of tradition, the embodiment of the utility model provides an adopt a more reliable lightning protection structure can reduce conductive impedance, make aircraft oil tank flap and organism form good conductive path, prevent the thunder and lightning and discharge the ignition, ignite or detonate the oil tank in the flap periphery formation, improve the security in aircraft oil tank district, this lightning protection structure's reliability is higher, and the electric current electric quantity of transmission improves at to a great extent in the unit interval. Further, the embodiment of the utility model provides an adopt the aluminum alloy to weave pad 3, local reinforcing lightning protection surface film 4 and the whole lightning protection surface film 5 of covering surface to switch on, improved non-load flap and organism wallboard 6's area of contact, reduced electrically conductive path's impedance, make the electric overlap joint reliability improve.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention.
Fig. 1 is a schematic view of an overall structure of a lightning protection structure of a non-force-bearing opening cover of a novel composite material integral oil tank provided by an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a butt joint region in a lightning protection structure of a non-bearing port cover of the novel composite integral fuel tank provided in the embodiment shown in FIG. 1;
fig. 3 is a schematic view of a partial structure of a lightning protection surface film in a lightning protection structure of a non-bearing port cover of the novel composite material integral oil tank provided by the embodiment shown in fig. 2.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
For the integral fuel tank area of the composite material of the airplane, the lightning protection of the composite material of the airplane must be considered particularly, and the structural damage affecting the flight safety can not occur when the structure of the composite material of the airplane is struck by lightning. Stable low impedance lap paths between the entire aircraft frame, and between the skin and the aircraft substructure, are necessary to allow the safe passage of strong lightning currents without overheating. Lightning current flowing through the aircraft can strike sparks at the interface of the poorly overlapped structures.
In the above background art, it has been described that the traditional method for avoiding lightning damage is to use a crossover, and although the lightning protection method is easy to implement, the lightning protection method is also easy to cause problems, and if the crossover is broken or damaged, the aircraft may be fatally damaged when being subjected to lightning.
In addition, traditional aircraft flap and organism are the metal material, consequently, traditional thunder and lightning protection membrane generally adopts copper wire or aluminium silk to weave and forms, can realize switching on and lightning protection purpose, and the structure of establishment is thicker, however, to combined material's oil tank organism, the traditional mode is difficult to effectively realize preventing the purpose of thunderbolt.
Be difficult to the problem of effective lightning protection to traditional aircraft flap, the embodiment of the utility model provides a lightning stroke protective structure of non-load flap of novel whole oil tank of combined material.
The present invention provides that several specific embodiments below may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 1 is the embodiment of the utility model provides a novel composite material whole oil tank is whole of thunderbolt protective structure's of non-load flap overall structure sketch map. The embodiment of the utility model provides a novel lightning stroke protective structure of whole oil tank non-load flap of combined material can include: the non-bearing port cover of the oil tank, the engine body wall plate 6 and the lightning protection surface film, and the non-bearing port cover of the oil tank and the engine body wall plate 6 are provided with a butt joint area. Fig. 2 is a schematic structural diagram of a butt joint region in a lightning strike protection structure of a non-force-bearing cover of a novel composite material integral fuel tank provided in the embodiment shown in fig. 1.
Referring to the lightning protection structure shown in fig. 1 and 2, a cover butt joint area assembly is arranged on the periphery of a non-bearing cover of an oil tank, the cover butt joint area assembly is arranged to be of a groove structure with a sunken interface, a wallboard butt joint area of the non-bearing cover of the oil tank is arranged at the end of a body wallboard 6, and the wallboard butt joint area enables the body wallboard 6 to be in butt joint with the non-bearing cover of the oil tank by being embedded into the groove structure.
The embodiment of the utility model provides an in the thunder and lightning protection surface film include: local reinforcing lightning protection surface film 4 and global lightning protection surface film 5, local reinforcing lightning protection surface film 4 is laid in the butt joint region of oil tank non-load flap and organism wallboard 6 and the peripheral region of butt joint region, and global lightning protection surface film 5 is laid on organism wallboard 6, and has the overlap joint region with local reinforcing lightning protection surface film 4.
As shown in fig. 2, the embodiment of the present invention provides a step between the wall plate butt joint region of the body wall plate 6 and the whole wall plate, so that when the butt joint region is embedded into the groove structure of the flap butt joint region component, the upper edge end face of the groove structure is opposite to the step position, and has a gap.
Fig. 3 is a schematic view of a partial structure of a lightning protection surface film in a lightning protection structure of a non-force-bearing cover of a novel composite integrated fuel tank provided by the embodiment shown in fig. 2. Based on the groove structure of the flap butt joint area assembly and the butt joint structure of the wall plate butt joint area of the engine body wall plate 6, as shown in fig. 2, the local reinforcing lightning protection surface film 4 is specifically laid on the wall plate butt joint area and the engine body wall plate 6 around the step, part of the local reinforcing lightning protection surface film is located between the upper edge of the groove structure and the wall plate butt joint area, and part of the local reinforcing lightning protection surface film is laid on the engine body wall plate 6 on the upper portion of the step through a gap between the groove structure and the step.
As shown in fig. 2 and fig. 3, the lightning protection structure according to the embodiment of the present invention can further include: an aluminum alloy braided gasket 3. The aluminum alloy woven gasket 3 is laid in a groove structure of the covering cap butt joint area component, is positioned between the upper edge of the groove structure and a wall plate butt joint area, and has a lap joint area with the local reinforced lightning protection surface film 4.
Referring to fig. 2 and 3, the utility model discloses a flap butt joint regional subassembly includes: a non-bearing inner cover 10 and a non-bearing outer cover 1.
The non-bearing outer cover 1 is of a flat plate structure, the non-bearing inner cover 10 is provided with a flat plate region and a sunken region, and the flat plate region of the non-bearing inner cover 10 is attached to the bottom of the non-bearing outer cover 1, so that the sunken region of the non-bearing inner cover 10 and a port of the non-bearing outer cover 1 form a groove structure for being in butt joint with the engine body wall plate 6 and laying a lightning protection surface film.
In addition, electric lap joint areas are reserved on the non-bearing inner cover 10 and the non-bearing outer cover 1, and the aluminum alloy woven gaskets are specifically laid between the non-bearing inner cover 10 and the non-bearing outer cover 1 and between the non-bearing outer cover 1 and a wall plate butt joint area.
The embodiment of the utility model provides an in concrete realization, the recess that non-load inner flap 10 and non-load outer flap 1 formed is provided with the through-hole on the structure to through the countersunk head bolt 2 that runs through the through-hole connect non-load inner flap 10 and non-load outer flap 1, countersunk head bolt 2's tip passes through layer board nut 9 and fixes, and adopts the fastener package.
The utility model discloses in the implementation of the embodiment, the regional subassembly of flap butt joint can also include: a sealing rubber ring 8; the sealing rubber ring 8 is placed between the butt joint area of the cover butt joint area component and the wall plate butt joint area of the machine body wall plate 6, and is specifically positioned between the lower edge of the groove structure and the wall plate butt joint area.
Further, the utility model discloses flap butt joint regional subassembly can also include: a phenolic aldehyde backing plate 7; this phenolic aldehyde backing plate 7 is placed between groove structure's lower edge and wallboard butt joint region, and is located the outside of sealing rubber circle 8 for keep apart non-load inner cover 10 and organism wallboard 6, have the effect of corrosion protection.
The embodiment of the utility model provides an in local reinforcing lightning protection surface film 4 and global lightning protection surface film 5 all adopt whole copper sheet, and the punching has a plurality of apertures on the copper sheet, and through tensile netted protecting film that forms, the copper mesh thickness of the local reinforcing lightning protection surface film that tensile obtained is greater than the copper mesh thickness of global lightning protection surface film.
The aircraft fuel tank port cover is in good lap joint with the peripheral structure and can shunt current when lightning passes through. The traditional technology is to adopt a lap joint wire, a copper wire is generally selected, and most of peripheral structures are metal structures.
The lightning protection structure of the non-bearing port cover of the novel composite material integral oil tank provided by the embodiment of the utility model is characterized in that the local reinforced lightning protection surface film 4 arranged in the butt joint area of the non-bearing port cover of the oil tank and the body wallboard 6 is conducted with the global lightning protection surface film 5 on the outer surface of the skin to form a conductive path; compared with the lightning protection structure of one or many wire lap-joint forms of tradition, the embodiment of the utility model provides an adopt a more reliable lightning protection structure can reduce conductive impedance, make aircraft oil tank flap and organism form good conductive path, prevent the thunder and lightning and discharge the ignition, ignite or detonate the oil tank in the flap periphery formation, improve the security in aircraft oil tank district, this lightning protection structure's reliability is higher, and the electric current electric quantity of transmission improves at to a great extent in the unit interval.
Further, the embodiment of the utility model provides an adopt the aluminum alloy to weave pad 3, local reinforcing lightning protection surface film 4 and the whole lightning protection surface film 5 of covering surface to switch on, improved non-load flap and organism wallboard 6's area of contact, reduced electrically conductive path's impedance, make the electric overlap joint reliability improve.
The following is a detailed description of a specific implementation of the lightning protection structure of the non-bearing port cover of the composite material integral fuel tank provided by the embodiment of the present invention.
Referring to fig. 1 to fig. 3, the lightning protection structure of the non-force-bearing cover of the novel composite integral fuel tank provided by this embodiment mainly includes: the non-bearing inner cover 10, the non-bearing outer cover 1, the aluminum alloy woven liner 3, the sealing rubber ring 8, the phenolic aldehyde base plate 7 and the machine body wall plate 6.
The surface of the body wallboard 6 is paved with a global lightning protection surface film 5, a local reinforced lightning protection surface film 4 is arranged in the lap joint area of the cover cap and the body wallboard 6, naked metal of the electric lap joint area is reserved on the non-bearing inner cover cap 10 and the non-bearing outer cover cap 1, and conductive paths are formed between the cover cap and the wallboard and between the inner cover cap and the outer cover cap through lap joint of aluminum alloy woven gaskets 3, so that the purpose of effective lightning protection is achieved; meanwhile, the joint surfaces of the non-bearing opening cover and the engine body wall plate 6 are sealed by a sealing rubber ring 8, the non-bearing inner opening cover 10 and the non-bearing outer opening cover 1 are connected by using a countersunk head bolt 2 and a supporting plate nut 9, and sealing measures such as joint surface sealing, fastener packaging and the like are adopted to prevent electric sparks from entering the inside of the oil tank.
Traditional flap and organism are the metal, consequently, traditional thunder and lightning protection membrane generally adopts copper wire or aluminium silk to weave and forms, can realize switching on and lightning protection purpose, and the structure of establishment is thicker, however, to combined material's oil tank organism, the traditional mode is difficult to effectively realize preventing the purpose of thunderbolt.
The utility model discloses the lightning protection surface film in the implementation example all takes whole copper sheet, dashes out a plurality of apertures, and is tensile to form. Therefore, the formed protective film does not need to worry about the protective failure caused by the loosening and the breakage of the metal wires in the use process.
Although the embodiments of the present invention have been described above, the description is only for the convenience of understanding the present invention, and the present invention is not limited thereto. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides a novel lightning stroke protective structure of whole oil tank of combined material non-load flap which characterized in that includes: the lightning protection device comprises an oil tank non-bearing port cover, a machine body wall plate (6) and a lightning protection surface film, wherein the oil tank non-bearing port cover and the machine body wall plate (6) are provided with butt joint areas;
a cover butt joint area assembly is arranged on the periphery of the oil tank non-bearing cover, the cover butt joint area assembly is of a groove structure with a sunken interface, the end part of the engine body wall plate (6) is provided with a wall plate butt joint area with the oil tank non-bearing cover, and the wall plate butt joint area enables the engine body wall plate (6) to be in butt joint with the oil tank non-bearing cover by being embedded into the groove structure;
the lightning protective surface film comprises: local reinforcing lightning protection surface membrane (4) and global lightning protection surface membrane (5), local reinforcing lightning protection surface membrane (4) are laid in the butt joint region of oil tank non-load flap and organism wallboard (6) and the peripheral region of butt joint region, and global lightning protection surface membrane (5) are laid on organism wallboard (6), and have the overlap joint region with local reinforcing lightning protection surface membrane (4).
2. The lightning strike protection structure of the non-bearing port cover of the novel composite integrated fuel tank as claimed in claim 1,
a step is arranged between the wall plate butt joint area of the machine body wall plate (6) and the integral wall plate, so that when the butt joint area is embedded into the groove structure of the cover butt joint area component, the upper edge end face of the groove structure is opposite to the step in position and has a gap;
the local reinforced lightning protection surface film (4) is specifically laid on a wall plate butt joint area and a machine body wall plate (6) on the periphery of the step, part of the local reinforced lightning protection surface film is located between the upper edge of the groove structure and the wall plate butt joint area, and part of the local reinforced lightning protection surface film is laid on the machine body wall plate (6) on the upper portion of the step through a gap between the groove structure and the step.
3. The lightning strike protection structure of the non-bearing port cover of the novel composite integrated fuel tank as claimed in claim 2, further comprising: an aluminum alloy braided liner (3);
the aluminum alloy woven pad (3) is laid in the groove structure of the covering cap butt joint area component, is located between the upper edge of the groove structure and the wall plate butt joint area, and has a lap joint area with the local reinforced lightning protection surface film (4).
4. The new composite integral fuel tank non-load bearing flap lightning strike protection structure as claimed in claim 3, wherein said flap docking area assembly comprises: a non-bearing inner cover (10) and a non-bearing outer cover (1);
the non-bearing outer cover (1) is of a flat plate structure, the non-bearing inner cover (10) is provided with a flat plate region and a sunken region, the flat plate region of the non-bearing inner cover (10) is attached to the bottom of the non-bearing outer cover (1), so that the sunken region of the non-bearing inner cover (10) and the port of the non-bearing outer cover (1) form the groove structure for being in butt joint with the body wall plate (6) and laying a lightning protection surface film;
an electric lap joint area is reserved on the non-bearing inner opening cover (10) and the non-bearing outer opening cover (1), and the aluminum alloy woven liner is specifically laid between the non-bearing inner opening cover (10) and the non-bearing outer opening cover (1) and between the non-bearing outer opening cover (1) and the wall plate butt joint area.
5. The lightning strike protection structure of the non-bearing port cover of the novel composite integrated fuel tank as claimed in claim 4,
the non-bearing inner cover (10) and the non-bearing outer cover (1) form a groove structure which is provided with a through hole, the non-bearing inner cover (10) and the non-bearing outer cover (1) are connected through a countersunk head bolt (2) penetrating through the through hole, and the end part of the countersunk head bolt (2) is fixed through a support plate nut (9) and is packaged by a fastener.
6. The new composite integral fuel tank non-load bearing flap lightning strike protection structure as claimed in claim 5, wherein said flap docking area assembly further comprises: a sealing rubber ring (8);
the sealing rubber ring (8) is placed between the butt joint area of the cover cap butt joint area component and the wall plate butt joint area of the machine body wall plate (6), and is specifically positioned between the lower edge of the groove structure and the wall plate butt joint area.
7. The new composite monolithic fuel tank non-load bearing flap lightning strike protection structure as claimed in claim 6, wherein said flap docking area assembly further comprises: a phenolic aldehyde shim plate (7);
the phenolic aldehyde backing plate (7) is placed between the lower edge of the groove structure and the butt joint area of the wall plate, is positioned on the outer side of the sealing rubber ring (8), and is used for isolating the non-bearing inner cover (10) and the machine body wall plate (6).
8. The lightning strike protection structure of the non-bearing port cover of the novel composite integrated fuel tank as claimed in claim 6,
the local reinforced lightning protection surface film (4) and the global lightning protection surface film (5) both adopt integral copper sheets, a plurality of small holes are punched in the copper sheets, net-shaped protection films are formed by stretching, and the copper net thickness of the local reinforced lightning protection surface film obtained by stretching is larger than that of the global lightning protection surface film.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023276827.5U CN214986115U (en) | 2020-12-29 | 2020-12-29 | Novel lightning stroke protection structure of composite material integral oil tank non-bearing opening cover |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023276827.5U CN214986115U (en) | 2020-12-29 | 2020-12-29 | Novel lightning stroke protection structure of composite material integral oil tank non-bearing opening cover |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114180084A (en) * | 2021-12-20 | 2022-03-15 | 中国航空工业集团公司西安飞机设计研究所 | Internal connection and conduction structure of lightning-proof metal net on aircraft skin and covering cap |
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2020
- 2020-12-29 CN CN202023276827.5U patent/CN214986115U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114180084A (en) * | 2021-12-20 | 2022-03-15 | 中国航空工业集团公司西安飞机设计研究所 | Internal connection and conduction structure of lightning-proof metal net on aircraft skin and covering cap |
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