PHASA-35® is an ultra-lightweight, solar-electric high-altitude platform conceived to offer a long-endurance alternative to traditional airborne and orbital assets. Built around advanced composite structures and high-efficiency photovoltaic surfaces, the unmanned aircraft maintains continuous operation by storing daytime solar intake within rechargeable cells to sustain night-time flight. The system has achieved multiple stratospheric demonstrations, surpassing 66,000 feet in 2023 and 2024, validating its suitability for extended operations above controlled airspace.
Designed as a stable, persistent carrier for sensing and communications tasks, the platform accommodates a flexible payload architecture that supports ISR, security, communications relay and wider mission services. It provides a cost-effective route to coverage previously accessible only through satellites, and its capacity for multi-month endurance enables applications ranging from network extension, including 5G, to disaster response and border monitoring. Its lightweight structure, global deployability and minimal upkeep make it a practical option for defence users seeking durable situational awareness.
Specifications:
| Flight Altitude: | Above 66,000 ft |
| Weight: | Approx. 150 kg |
| Wingspan: | 35 m |
| Payload Capacity: | 15 kg |
