Model: LH70

　　Wheelbase: 1950mm

　　Payload capacity: 10-20KG

　　Tethered hovering height: 100-300 meters

　　Wind resistance: Wind force 7

　　Hanging time: ≥ 12 hours

　　Onboard power supply power: 8-12KW

　　Municipal power/generator: AC380V

　　Application scenarios: Curtain wall cleaning, communication relay, optoelectronic reconnaissance, environmental detection, etc.

　　Working principle of Tethered Drone

　　The Tethered Drone is connected to a ground power source through a cable, enabling long-term aerial hovering and mission execution.

　　The mooring box converts the single-phase 220V (or three-phase 380V) AC power provided by the generator (mains power) into high-voltage DC power DC400-1500V and outputs it to the mooring cable. After being stepped down by the onboard power supply, it is converted into a DC stabilized output suitable for Drone Power Supply (such as 50V for 12S), providing a long endurance power supply mode for the drone.

　　Application areas of Tethered Drone

　　The application of Tethered Drone is very extensive, including but not limited to emergency rescue (emergency lighting, emergency communication, high-rise firefighting), military (intelligence surveillance, electro-optical reconnaissance, radar electronic warfare), public safety (relay self-organizing network, environmental monitoring), and civilian (nighttime power repair, high-rise building cleaning/spraying). These application scenarios require drones to remain in a fixed position for a long time to complete specific tasks.

　　LH70 Tethered Drone: Performance, Safety, and Technical Superiority for Persistent Aerial Operations

　　The LH70 Tethered Drone System is engineered to set a new benchmark in the realm of persistent aerial platforms. Designed for demanding, long-duration missions in security, broadcasting, and surveillance, it delivers an unmatched combination of endurance, stability, and operational efficiency. This comprehensive guide delves into the core performance characteristics, rigorous safety protocols, advanced energy standards, and distinct technical advantages that make the LH70 the intelligent choice for B2B professionals seeking a reliable and high-performing tethered solution.

　　Performance Characteristics: Engineered for Uninterrupted Excellence

　　The LH70 is designed not for short bursts of activity, but for continuous, reliable operation. Its performance profile is tailored to meet the rigorous demands of 24/7 aerial support.

　　Unmatched Flight Endurance and Stability

　　The most defining feature of the LH70 is its ability to operate indefinitely. Unlike battery-powered drones limited to 30-60 minutes of flight, the LH70 receives continuous power through its specialized tether, enabling flight times limited only by ground power availability and scheduled maintenance. This "fly-all-day" capability is fundamental for missions requiring a constant aerial presence. Furthermore, the aircraft is engineered for exceptional stability. Its advanced flight controller and aerodynamic design allow it to maintain a precise hover in challenging wind conditions up to 15 m/s (33.5 mph), ensuring a rock-steady platform for cameras and sensors, crucial for capturing clear imagery and reliable data.

　　High-Payload Capacity and Flexibility

　　The LH70 is built to carry more than just a basic camera. It features a versatile payload capacity of up to 1.5 kg (3.3 lbs), accommodating a wide array of professional-grade equipment. This includes high-definition PTZ (Pan-Tilt-Zoom) cameras, thermal imaging systems for night operations, multispectral sensors for agricultural monitoring, and even communication relay packages. The standardized gimbal and power interface allow for rapid swapping of payloads in the field, making the system adaptable to evolving mission requirements without the need for additional aircraft.

　　Operational Altitude and Coverage

　　The system operates effectively at a standard tether length of 70 meters (230 feet), providing a significant elevation advantage for a wide area of observation. This optimal altitude offers a substantial footprint for surveillance while maintaining a stable and secure connection to the ground station. The elevated position is ideal for overcoming ground-level obstacles, providing an unobstructed view for situational awareness over large areas like industrial facilities, public events, or border perimeters.

　　Energy Efficiency and Environmental Standards

　　In an era focused on sustainability, the LH70 is designed with intelligent energy management at its core, reducing both operational costs and environmental impact.

　　Advanced Power Management System

　　The LH70 utilizes a high-voltage power transmission system through its tether. By operating at a higher voltage, the system significantly reduces current, which minimizes power loss over the length of the cable. This efficient power delivery means less energy is wasted as heat, and more is used for flight and payload operation. The ground station incorporates an intelligent power converter that optimizes energy draw from the source, whether it's the AC grid, a generator, or a silent battery pack, ensuring clean and stable power is delivered to the drone.

　　Compliance with International Efficiency Standards

　　The design and components of the LH70's power system are developed in accordance with global energy efficiency directives, such as the EU's ErP framework. This commitment ensures that the system minimizes its ecological footprint during continuous operation. For mobile units, the efficient power draw translates directly into extended operation times when using generator or battery power, reducing fuel consumption and emissions.

　　Silent and Emission-Free Operation

　　When powered by its optional battery pack or a silent generator, the LH70 produces zero localized emissions. This makes it perfectly suited for environmentally sensitive areas and urban operations where noise and air pollution are a concern. Its electric motors are remarkably quiet, allowing for discreet deployment without causing noise disturbance, a critical factor for public safety operations and wildlife monitoring.

　　Comprehensive Safety Protocols and Design

　　Safety is the non-negotiable foundation of the LH70's design philosophy. Every aspect of the system incorporates redundant and failsafe mechanisms to protect personnel, the asset, and the public.

　　System-Wide Redundancy

　　The LH70 is built with multiple layers of redundancy to prevent single points of failure. The flight controller features a dual modular architecture, including redundant IMUs (Inertial Measurement Units) and GNSS (Global Navigation Satellite System) receivers. In the highly unlikely event of a primary system failure, the backup system instantly takes over, ensuring maintained stability and control. Additionally, an independent backup battery is integrated into the drone, automatically activating to power a controlled, safe landing in the event of a tether power interruption.

　　Failsafe Tether and Ground Station Design

　　The tether cable itself is a marvel of safety engineering. It is constructed with a woven aramid fiber (Kevlar) core, providing exceptional tensile strength to prevent breakage under tension. The ground station is equipped with an automated reel management system that maintains optimal tether tension, preventing slack and potential entanglement. The system includes multiple electronic fuses and circuit breakers that instantly disconnect power in case of an electrical fault, such as a short circuit or power surge.

　　Operational Safety Features

　　Pilots and operators are supported by a suite of software-based safety features. These include a precise Geofence system to maintain a predefined operational perimeter, automatic Return-to-Home (RTH) and landing protocols upon loss of command signal or low power at the ground source, and real-time system health monitoring that provides alerts for any parameter outside normal operating limits, allowing for proactive intervention before an issue escalates.

　　Distinct Technical Advantages

　　The LH70's superiority is rooted in several key technological innovations that differentiate it from conventional drones and other tethered systems.

　　Patented Anti-Interference Tether Technology

　　The core of the system is its proprietary fiber-optic micro-tether. Unlike systems that use copper wires for data, the LH70's tether employs a single-mode optical fiber for data transmission. This makes the data link completely immune to electromagnetic interference (EMI), a common issue in urban or industrial environments crowded with radio signals. This results in a secure, low-latency, and high-bandwidth connection that cannot be jammed, ensuring uninterrupted video and sensor data flow.

　　Precision GNSS and Vision Positioning System

　　For unparalleled positional hold, the LH70 integrates a multi-frequency GNSS module (supporting GPS, GLONASS, and BeiDou) with a downward-facing vision sensor. This sensor fusion allows the drone to maintain its position with centimeter-level accuracy, even in environments where GPS signals are weak or temporarily unavailable, such as near large buildings or under tree cover.

　　Rapid Deployment and Automated Operation

　　The entire LH70 system is designed for quick setup, typically operational in under five minutes. The automated reel and intuitive Ground Control Station (GCS) software allow a single operator to manage the entire flight. The system can be pre-programmed for fully autonomous takeoff, ascent to a specified altitude, and landing, minimizing the potential for human error and reducing operational workload.

　　Conclusion: The Strategic Choice for Persistent Aerial Presence

　　The LH70 Tethered Drone System is more than just a product; it is a comprehensive aerial solution that delivers on the promise of performance, safety, and efficiency. Its ability to provide a stable, enduring, and adaptable platform, coupled with its robust safety features and advanced technical design, makes it an indispensable tool for modern enterprises and agencies. By choosing the LH70, you are not just purchasing a drone; you are investing in a reliable, silent, and ever-vigilant partner that enhances your capabilities and secures your operations from above.