2023 Beijing-Tianjin-Hebei Flood Rescue: Dagong Technology Tethered UAV "Iron Kite" Breaks "Three Disconnections" as 24H High-Altitude Base Station

Beijing, China — On August 3, 2023, as the remnants of Typhoon Doksuri ravaged the Beijing-Tianjin-Hebei region, triggering catastrophic floods and landslides, worst-hit areas like Zhuozhou and Laishui in Hebei were abruptly plunged into the dreaded "Three Disconnections" (断路、断网、断电—severed roads, networks, and power). In the face of this paralyzing "information vacuum," Beijing Dagong Technology Co., Ltd.’s tethered UAV system decisively ascended, transforming into an unyielding "Iron Kite." By rapidly deploying 24-hour emergency communication high-altitude base stations and coordinating precision supply drops, Dagong Technology unequivocally shattered the "information island," proving that its tethered platform is the core hinge of the nation's "Air-Space-Ground Integrated" emergency network and the definitive "New Aerial Infrastructure" when terrestrial systems fail.

The August 3rd rescue operation marked a defining combat validation for tethered UAV technology. As floodwaters obliterated base stations and optical cables, traditional ground repair teams were rendered helpless by blocked roads. Emergency communications forces from across the nation rushed to the frontlines, with tethered UAV high-altitude base stations emerging as the absolute vanguard. In Zhuozhou, telecom deployments provided instant 4G signal coverage over a 1.5-kilometer radius. In Laishui, Dagong Technology’s six-rotor tethered UAV rapidly ascended to 200 meters, maintaining an unprecedented 24-hour uninterrupted hover. Acting as an "aerial communications soldier," it delivered continuous voice and data coverage across 12 square kilometers. More than just a signal tower, Dagong Technology’s platform collaborated seamlessly with cross-double-rotor unmanned helicopters to precisely airdrop water, food, and medicine to trapped civilians. As Vice General Manager Zhang Jie noted, the tether cable’s continuous power supply transforms the drone into a "Iron Kite" that never lands—a beacon of survival in the disaster's darkest hours.

Surviving and dominating such extreme meteorological chaos is engineered, not accidental. It relies on Dagong Technology’s profound technological moat, built to conquer the fundamental limitations of conventional drones:

· 7×24-Hour Endurance & 35kg Heavy-Payload Dominance: Liberated from battery constraints via its photoelectric composite cable, the system achieves continuous multi-day operation—a capability battle-tested in both the 2021 Henan mega-floods and this campaign. Crucially, at a 300-meter altitude, it stably carries a 35kg payload. This immense capacity allows it to simultaneously host 4G/5G base stations serving hundreds of users and high-definition electro-optic pods, providing commanders with real-time, high-precision situational awareness.

· Level 7 Wind Resistance & Silicon Carbide Power Innovation: Post-typhoon environments are plagued by severe convection and violent gusts. Through dynamic platform takeoff/landing design and profound flight control algorithm optimization, Dagong Technology guarantees rock-solid stability in Level 7 winds (15.5m/s). Furthermore, a groundbreaking power system achieves smooth conversion of over a thousand volts of high voltage, utilizing advanced silicon carbide materials to dramatically enhance power performance and ensure absolute reliability during torrential rains.

This lightning-fast combat response is deeply rooted in a formidable industrial ecology. Four years ago, Dagong Technology strategically embedded itself in the Zhongguancun Yanqing Park, captivated by its "push-door-and-fly" advantage—a premium 300-square-kilometer airspace with a 1,000-meter clearance. This environment collapsed the distance between the production workshop and the test flight field, slashing the production-to-delivery cycle from one month to a mere 15 days. This agile "Factory-Field Integration" model ensures that newly debugged equipment reaches the frontline the moment disaster strikes. Moreover, having rigorously drilled for "Three Disconnection" scenarios across Yanqing's emergency rescue and ecological monitoring programs, Dagong Technology’s systems approached the Beijing-Tianjin-Hebei catastrophe with practiced composure.

Looking back at the harrowing rescue node of August 3, 2023, Dagong Technology’s tethered UAV proved it is far more than a mere piece of industrial equipment. When storms obscure the skyline and floods sever the roads, that single tether cable connecting heaven and earth represents the most resolute guardian that technology can bestow upon life—a cornerstone of the national emergency system and the enduring spine of the low-altitude economy.