【Case Study】 Kitefly Tethered · Industrial UAV Application
Can Drones Replace Human Workers in Hazardous High-Rise Cleaning?
Kitefly Tethered Delivers a 24/7 Tethered UAV Solution for Lianyungang Yihai Liangtian
Date: March 10, 2025 | Location: Lianyungang, Jiangsu, China | Client: Yihai Liangtian | System: SF-91X-100M
How do industrial operators eliminate human risk in high-altitude facade cleaning while maintaining continuous operation? On March 10, Kitefly Tethered deployed the SF-91X-100M Tethered Drone System at Lianyungang Yihai Liangtian grain storage facilities — replacing manual rope-access crews with a Continuous Power Drone System capable of 24/7 uninterrupted operation. This deployment demonstrates the real-world reliability of our Industrial Tethered UAV System in high-load industrial cleaning environments.
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On-site deployment at Lianyungang Yihai Liangtian grain storage facility
1. Core Equipment: The Foundation of Industrial Reliability
To meet the demanding requirements of Industrial Cleaning UAV tasks, the SF-91X-100M integrates three core technical modules engineered to maintain stability under high-load field conditions.
SF-91X-100M in operation — facade cleaning at Yihai Liangtian
① Hexacopter Platform: AF-J30 Heavy Lift Drone
· Payload Capacity: Maximum takeoff weight 65 kg; effective payload 30 kg — sufficient to carry high-pressure water jetting tools.
· Precision Positioning: RTK (4G version) integrated, delivering centimeter-level accuracy across large-area Drone Facade Cleaning targets.
· Environmental Resilience: Operating range -20 °C to +50 °C; stable in Level 6 wind conditions.
· Structural Integrity: Carbon fiber + aerospace-grade aluminum alloy; empty weight ≤ 20 kg; folded 820 × 940 × 880 mm for rapid deployment.
AF-J30 Heavy Lift Hexacopter — carbon fiber airframe, ≤ 20 kg empty weight
② Ground Power Station: AF-G30 Tethered Power Supply System
· Unlimited Flight Time: 120 m high-voltage tether cable enables 24/7 continuous operation — no battery swaps.
· High Voltage Architecture: Input 380 VAC; output 1000 VDC; maximum output power 16 kW.
· Intelligent Management: Automatic Tether Winch; Kevlar reinforced tether cable rated at 50 kg tensile strength.
· Robust Build: Complete system weight (including cable) 41.5 ± 1 kg; engineered for sustained industrial-grade operation.
AF-G30 Tethered Ground Power Station — 380 VAC input / 1000 VDC output, 16 kW
③ Airborne Unit: WF-12K Airborne Power Module
· Power Conversion: Input 800–1000 VDC → output 59 VDC / 200 A; stable 12 kW to propulsion and cleaning systems.
· Lightweight Design: 3.21 ± 0.5 kg; dimensions 239 × 204 × 139 mm — maximises effective mission payload.
· Standardised Interfaces: XT90 input + XT150 output; compatible with mainstream UAV power systems.
· Thermal Management: Industrial-grade design ensures stable output under sustained high-load operation.
WF-12K Airborne Power Module — 239 × 204 × 139 mm, 3.21 ± 0.5 kg
2. Tethered UAV vs. Traditional Methods: Key Operational Differences
Compared with rope-access "spider-men" and scaffolding, the Kitefly Tethered solution addresses four critical industry pain points:
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Pain Point
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Traditional Methods
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Kitefly Tethered Solution
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Safety Risk
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High fall & heat-exposure risk for personnel at height
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Zero human presence at height; all operations ground-controlled
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Operational Hours
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Limited by daylight & worker fatigue; frequent breaks
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24/7 continuous via tethered ground power — no battery swaps
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Cost Structure
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High scaffolding cost; specialised high-altitude insurance
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Lower per-mission cost; no scaffolding; reduced insurance
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Deployment Flexibility
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Fixed scaffolding; slow repositioning
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Rapid deployment: grain depots, silos, complex facades
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Completed facade cleaning operation — Lianyungang Yihai Liangtian, March 2025
3. Field Validation: What This Deployment Proves
Since 2013, Kitefly Tethered has focused on the source innovation of Industrial Tethered UAV Systems. The successful operation at Yihai Liangtian validates the reliability of our High Voltage Tethered Power System under real-world conditions — sustained output, stable cable management, and zero safety incidents.
Whether for grain depot facades, silo exteriors, power plant structures, or complex industrial infrastructure, the SF-91X-100M demonstrates what a purpose-built Industrial Tethered UAV System can achieve in mission-critical cleaning environments.
For global partners seeking an Export Grade UAV System or Customized UAV Power Solutions, Kitefly provides the engineering expertise to ensure stable, long-endurance, and safe aerial operations.
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