Mooring cable for large-length unmanned aerial vehicle

Abstract

The invention discloses a method for preparing a mooring cable for a large-length unmanned aerial vehicle, and belongs to the technical field of cables. The product is composed of a composite tin-plated copper conductor, an insulating layer, a central tensile element, an outer sheath layer and a woven reinforcing layer. The design and process optimization of the composite conductor structure and the reinforcing sheath layer can be adapted to mooring cables for unmanned aerial vehicles with an overhang height of 500 m or more. In the air at a high altitude of 500m or higher, the cable can not only meet a power transmission requirement of 2000V high voltage and a long-term current carrying capacity of 50A or more, but also can transmit data signals.

Description

technical field [0001] A mooring cable for a large-length aircraft belongs to the technical field of cables. Background technique [0002] The tethered cable, as the link between the UAV and the ground equipment, plays an extremely critical role in the transmission of the UAV's power supply and signal transmission, and is indispensable. In recent years, with the rapid growth of the application of unmanned aerial vehicles, the mooring cables for unmanned aerial vehicles have also developed rapidly. [0003] The cooperation content of tethered cables in the UAV system sounds simple, but it is extremely difficult to satisfy the current and signal transmission of the UAV while having a lighter weight and a smaller structural size. Because the current transmission capacity of the tethered cable is mainly guaranteed by the cross-sectional area of ​​the conductor, the larger the cross-sectional area of ​​the conductor, the smaller the DC resistance, and the greater the carrying ca...

AI Technical Summary

Problems solved by technology

[0003] The cooperation content of the tethered cable in the UAV system sounds simple, but it is extremely difficult to satisfy the current and signal transmission of the UAV while having a lighter weight and a smaller structure size

Because the current transmission capacity of the tethered cable is mainly guaranteed by the cross-sectional area of ​​the conductor, the larger the cross-sectional area of ​​the conductor, the smaller the DC resistance, and the greater the carrying capacity of the conductor, but the weight of the cable will also increase with the cross-sectional area of ​​the conductor. When it becomes larger and increases rapidly, while meeting the carrying capacity requirements of the UAV, the weight of the cable will easily exceed the load-bearing capacity of the UAV, and the entire system of the UAV will not be able to operate normally.

However, if the cross-sectional area of ​​the conductor of the cable is reduced, the weight of the cable can be controlled to a certain extent, but the conductor with a small cross-section transmits a large current and is prone to generate a large amount of heat. Affects the safe operation of unmanned aerial vehicle systems

Images