CN-224216921-U - Tensile tightly-covered aramid fiber for ultra-long-distance flight of small unmanned aerial vehicle

Abstract

The utility model discloses a tensile tightly-covered aramid fiber for ultra-long-distance flight of a small unmanned aerial vehicle, which belongs to the technical field of optical fibers and comprises an optical fiber main body, wherein two aramid fibers are symmetrically arranged on two sides of the optical fiber main body, a tightly-covered layer is arranged on the outer sides of the optical fiber main body and the aramid fibers, a single-mode optical fiber insensitive to bending loss of the optical fiber main body is selected as the optical fiber main body, a 6.657.A2 type optical fiber is selected as the optical fiber main body, and an ultra-hydrophobic layer is arranged on the outer side of the tightly-covered layer. According to the utility model, the aramid fibers are arranged on two sides of the optical fiber main body, the tight cladding layers are extruded outside the optical fibers and the aramid fibers, and the tensile tight cladding aramid fiber for the unmanned aerial vehicle is formed by combining the optical fibers, so that the mechanical property of the optical fibers is improved while the good conductivity of the optical fibers is ensured.

Inventors

• DAI JUN
• LI SHIWEN
• MA NANA
• ZHANG LIUFENG
• YANG XIAOLIN
• LI JIANHUI
• WU XIAOFEI
• LI JIANWEI

Assignees

• 郑州天河通信科技有限公司

Dates

Publication Date

20260508

Application Date

20250717

Claims (6)

1. 1. The utility model provides a small-size unmanned aerial vehicle ultra-long distance flight is with tight package aramid fiber of tensile, includes fiber main part (1), its characterized in that, fiber main part (1) bilateral symmetry is provided with two aramid fibers (2), fiber main part (1) with the outside of aramid fibers (2) is provided with tight covering (3), fiber main part (1) is the insensitive single mode fiber of bending loss, fiber main part (1) chooses for use 6.657.A2 type optic fibre, the outside of tight covering (3) is provided with super hydrophobic layer (4).
2. 2. The tensile tight-cladding aramid fiber for ultra-long distance flight of small unmanned aerial vehicle according to claim 1, wherein the weight of the fiber main body (1) per meter of the fiber is only 0.07g.
3. 3. The tensile tight-wrapping aramid fiber for ultra-long distance flight of a small unmanned aerial vehicle according to claim 1, wherein the linear density of the aramid fiber (2) is 200dtex, and the diameter of the aramid fiber (2) is 0.1mm.
4. 4. The tensile tight-wrapping aramid fiber for ultra-long-distance flight of a small unmanned aerial vehicle according to claim 1, wherein the tight-wrapping layer (3) is a PVC tight-wrapping.
5. 5. The tensile tight-cladding aramid fiber for ultra-long distance flight of small unmanned aerial vehicle according to claim 1, wherein the weight of the tight-cladding aramid fiber (2) fiber for unmanned aerial vehicle is only 0.45g per meter when the overall outer diameter of the aramid fiber (2) fiber is 0.6 mm.
6. 6. The tensile tightly-wrapped aramid fiber for ultra-long-distance flight of a small unmanned aerial vehicle according to claim 1, wherein the ultra-hydrophobic layer (4) is formed by spraying a super-hydrophobic material, and the thickness of the ultra-hydrophobic layer (4) is 0.05mm.

Description

Tensile tightly-covered aramid fiber for ultra-long-distance flight of small unmanned aerial vehicle Technical Field The utility model belongs to the technical field of optical fiber correlation, and particularly relates to a tensile tightly-wrapped aramid fiber for ultra-long-distance flight of a small unmanned aerial vehicle. Background Modern battlefield electronic countermeasure is aggravated, traditional radio-controlled unmanned aerial vehicles are easily interfered by external electromagnetic signals, and optical fiber communication avoids electromagnetic interference through physical isolation characteristics, so that most unmanned aerial vehicles used in modern battlefields are in wired communication traction type. The link integrity is ensured by relying on the optical fiber with higher tensile strength, but the tensile strength of the current various communication optical fibers is limited, so that the system is not suitable for the dragging flight communication of the optical fiber unmanned aerial vehicle under various complex terrain environments, the unmanned aerial vehicle communication is interrupted and out of control due to the fact that the optical fiber is easily broken in the flight process, and the system cannot use the optical cable with high tensile strength to replace the light optical fiber for flight communication due to the limitation of the load and maneuverability of the common unmanned aerial vehicle. CN202510604869.5 discloses a photoelectric composite cable suitable for an unmanned aerial vehicle platform, and the continuous power supply of the unmanned aerial vehicle and other electric facilities carried by the unmanned aerial vehicle is completed through an electric unit 1. The single-mode fiber 2 can be utilized to realize data transmission, the control of the ground end is received, corresponding data is returned, the conductor 7 of the electric unit 1 is formed by adopting a plurality of tin-plated copper stranded wires, the stranded wire structure is formed by 19 tin-plated copper wires with the diameter of 0.15mm, the outer diameter of the photoelectric composite cable is 2.2mm plus or minus 0.1mm, the total weight of each meter is less than or equal to 12g, the weight of the 10KM optical cable is as high as 120Kg, the cable is not suitable for being used by unmanned aerial vehicles in long-distance flight, and the winding layer and the cable are arranged, so that the integral bending characteristic of the photoelectric composite cable is reduced. The photoelectric composite cable for the unmanned aerial vehicle is analyzed from the signal transmission angle, namely a pair of (two) copper wires are used as signal transmission lines or power lines, and the attenuation coefficient of the copper cable is large (the attenuation of the copper cable is about 1.5dB/100m, and the attenuation of 1km reaches about 15 dB), so that the photoelectric composite cable can only transmit signals within the range of hundreds of meters at most and cannot be suitable for the transmission of the ultra-long-distance flight control signals of the unmanned aerial vehicle; from the analysis of the power supply angle, a cable in a photoelectric composite cable for a common unmanned aerial vehicle is used as a power line of the unmanned aerial vehicle, if light-weight long-distance flight is to be realized, a copper wire is made to be thin, but the thinner the copper wire is, the larger the resistance is (the copper cable direct current resistance with the diameter of 0.5mm is usually about 9 omega/100 m, the resistance of 1km is 90 omega, and the resistance of 10km is 900 omega), and the long-distance power supply for the unmanned aerial vehicle cannot be realized due to the fact that the unmanned aerial vehicle cannot realize the ultra-long-distance flight in a cable power supply mode due to the limitation of the copper cable resistance. The present utility model has been made in view of this. Disclosure of utility model The utility model aims to solve the technical problems and overcome the defects of the prior art, and provides a tensile tightly-wrapped aramid fiber for ultra-long-distance flight of a small unmanned aerial vehicle, which adopts the following basic conception: The utility model provides a small-size unmanned aerial vehicle ultra-long distance flight is with tensile tight package aramid fiber, includes the optic fibre main part, optic fibre main part bilateral symmetry is provided with two aramid fibers, the optic fibre main part with the outside of aramid fiber is provided with tight package, the optic fibre main part is the insensitive single mode fiber of bending loss, the optic fibre main part selects for use 6.657.A2 type optic fibre, the optic fibre main part has excellent transmission characteristic and macrobend characteristic, the outside of tight package is provided with super-hydrophobic layer. As a further proposal of the utility model, the optical fiber main body