Innovative Power Solutions for Unmanned Aircraft Systems: The SunCubes Approach
Introduction to Wireless Power and Data Transfer
At the recent Seafuture exhibition in La Spezia, the Italian start-up SunCubes unveiled a groundbreaking optical system capable of wireless power and data transmission. This technology has significant implications for unmanned aerial vehicles (UAVs), enhancing their operational efficiency and situational awareness by allowing them to operate without the cumbersome limitations of physical tethering.
Operational Advantages of Wireless Systems
Wireless transmission of power and information greatly expands the versatility of UAVs, enabling them to conduct surveillance missions over broader areas while providing real-time intelligence. Traditional systems rely on tethered drones, which limit operational range to approximately 50 to 100 meters due to the weight and constraints of the tether. For instance, a tether with a linear mass of 16 g/m means that a 100-meter cable can weigh around 1.6 kg, restricting vehicle speed and operational efficacy, especially in variable weather conditions.
Key Benefits of SunCubes Technology:
- Freedom of Movement: UAVs can operate independently without tether constraints.
- Enhanced Situational Awareness: Continuous power and data relay improves reconnaissance capabilities.
- Rapid Deployment: Eliminates the need for physical cabling, allowing for swift setup of security perimeters or surveillance operations.
Technological Framework of SunCubes Light
SunCubes began its journey with laser-based power systems intended for space applications and has since adapted this technology for terrestrial use. The SunCubes Light, designated as SCL-15W-D10, is capable of transmitting 15 watts of power and 10 megabits per second data over a distance of up to 1,000 meters under optimal conditions. This system consists of:
- Transmitting Base Unit: A cylindrical component measuring approximately 300 mm in diameter and 550 mm in length.
- Receiving Unit: A device installed on the target system, exhibiting an energy density superior to traditional batteries, which is crucial for aerial applications.
Designated for static use, the alignment of the SunCubes Light involves manual targeting. While the initial transfer efficiency is impeded by over 50% loss at the energy source to the laser emitter, substantial losses also occur from the emitter to the receiver, influenced by atmospheric conditions.
Testing and Development Milestones
In 2023, SunCubes conducted initial field tests in collaboration with Movyon, a leading innovation hub for the Autostrade per l’Italia Group, demonstrating the system’s capabilities at a distance of 50 meters. Continued evaluations at Leonardo’s facilities in Venegono Superiore further confirmed the technology’s effectiveness, achieving successful operations at 600 meters.
Future Enhancements: The SCLY-100W
Building on this foundation, SunCubes is developing the SCLY-100W, specifically engineered for UAV applications. This advanced system features:
- Significantly Higher Power Output: Designed to deliver greater energy at the receiving end.
- Extended Range: Capable of functioning effectively at distances reaching 3,000 meters.
- Automatic Targeting and Alignment: A self-tracking mechanism ensuring continuous laser alignment with the UAV.
Applications Beyond UAVs
The SCLY-100W is not exclusively tailored for aerial uses; it also targets unmanned maritime vessels, aligning with current trends in naval operations. By incorporating data transfer capabilities, SunCubes envisions this technology making substantial contributions to autonomous operations across multiple domains.
Strategic Implications and Funding
The potential of wireless power systems in military and homeland security applications cannot be overstated. With the ability to empower UAVs and secure maritime assets, these innovations promise enhanced operational flexibility and effectiveness.
In June 2025, SunCubes secured €1 million in funding from Cassa Depositi e Prestiti, a public financial institution focused on fostering growth and technological innovation in Italy. This financial backing will expedite the ongoing development of high-performance, long-range power systems.
Conclusion
The advancements by SunCubes in wireless power and data transmission represent a leap forward in the realm of unmanned systems. By alleviating the constraints of tethered operations, these technologies open the door to a new era of autonomous flight and maritime operations, enhancing situational awareness and response capabilities across a range of critical applications. As testing progresses and technology matures, the defense and security landscapes are poised for transformative change.
