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Flying Eagle—DJI M400 Dual-System Tethered Drone: Unlimited Possibilities for High-Altitude Operations

Release time:

2025-10-18 09:56

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I. The Sustainer of Aerial Productivity

The emergence of DJI’s Matrice 400 (abbreviated as M400) dual-rope tethered drone, through... Electrical tethering With Water retention With two core technologies, it completely breaks free from range limitations and has become an “all-weather partner” for industry-level aerial work.

II. Dual-Attachment Technology: The Endurance Logic of Electricity and Water

(1) Electric Tether System: The “Airborne Umbilical Cord” for Continuous Power Supply

The tethered drone is the most mature endurance solution for the M400. Its core principle is to establish a continuous connection between the ground power source and the drone via a tether cable, creating an “aerial umbilical cord” that is no longer limited by battery capacity.

  • Technical specifications: The tethered power system developed by Nanjing Feiying for the M400 features a voltage-regulating circuit design that ensures stable output. Paired with lightweight cables and a highly integrated power supply module, the system’s overall weight is precisely controlled, without compromising the drone’s payload capacity or flight stability. The ground-based power supply unit is compatible with various power sources, including mains electricity and generators.
  • Core advantages: Compared to traditional battery-powered systems, tethered electric drones achieve “zero range anxiety”—in scenarios such as security for large-scale events and forest fire monitoring, the M400 can be equipped with high-definition cameras or thermal imagers and remain hovering in standby mode for several hours on end. When paired with a 2400W tethered lighting payload, it can deliver uninterrupted nighttime illumination at an intensity of 400,000 lumens for up to 24 hours, covering an area within a 50-meter radius—equivalent to the combined brightness of 20 100-watt incandescent bulbs.
  • Suitable scenarios: During power line inspections, the electric tethered drone M400 can complete inspections of dozens of kilometers of transmission lines in a single day, increasing efficiency by 3 to 5 times compared to manual inspection. In emergency rescue operations, it can set up temporary communication relay stations, with a video transmission range of up to 8 kilometers that can penetrate signal interference at disaster sites, thereby providing continuous communication support for rescue command and control.

(2) Aquatic System Retention: “Invisible Endurance” for Special Scenarios

The Water System Retention is an innovative solution developed by M400 specifically to meet the demands of the curtain wall cleaning industry. It primarily consists of a high-pressure water pump, a high-pressure explosion-proof hose, and a high-pressure spray gun, working in conjunction with onboard equipment to enable high-altitude cleaning operations.

  • Technical specifications: The system employs specialized high-pressure water hoses that are corrosion-resistant and highly durable, paired with quick-disconnect connectors and a flow-control system, enabling precise delivery of liquids to onboard payloads. For example, in facade-cleaning applications, a high-pressure water hose connects a ground-based water tank to a high-pressure spray device mounted on a drone, allowing for continuous high-altitude cleaning operations.
  • Core advantages: The water-based tether breaks the traditional limitations of drones, enabling the M400 to evolve from a “surveillance device” into a “task-executing device.” Its high-pressure water hose boasts a delivery efficiency of several liters per minute and can be precisely coordinated with the drone’s stable hovering capability to perform operations at fixed locations, thereby eliminating the safety risks associated with manual high-altitude work.
  • Suitable scenarios: In high-rise building curtain wall cleaning, the water retention system enables the M400 to operate continuously for more than 8 hours, with cleaning accuracy reaching the millimeter level.

Currently, the M400 dual-tether system drone is evolving toward “longer ranges, heavier payloads, and more versatile applications.” In the future, dual-tether drones are expected to achieve end-to-end intelligent operation—encompassing “remote control, autonomous operations, and data feedback”—and will become a core aerial infrastructure in smart city development.

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