PHASA-35

PHASA-35 is a novel, ultra-light weight, solar-electric High Altitude Pseudo Satellite (HAPS) Uncrewed Aerial System (UAS) which provides an alternative to conventional sensing and communications systems. Pushing the boundaries of aviation technology, PHASA-35 successfully completed stratospheric flight trials in 2023 and again in 2024, exceeding an altitude of 66,000ft, each time before landing safely

PHASA-35 is designed with a flexible payload system, capable of accommodating up to 15 kilograms (33 pounds) of equipment. The payload, housed in a dedicated pod, operates independently from the rest of the aircraft’s systems, allowing for straightforward integration and updates and ensures that the UAS can be quickly reconfigured for different missions without extensive modifications.

PHASA-35 has a wingspan of 35 meters and weighs approximately 150 kilograms (330 pounds). It is constructed using advanced composites, contributing to its lightweight and efficient build. Enabling it to operate in the stratosphere, flying at altitudes around 65,000 feet (approximately 20 Km). This altitude allows it to stay above conventional air traffic and weather systems, providing a stable platform for various payload capabilities.

Equipped with ultra-lightweight solar cells and high energy density battery technology, PHASA-35 harnesses solar energy during daylight hours to power its flight and charges its batteries for night-time operation. This design enables the platform to remain airborne over an area of interest for several months at a time with no running costs.

Thanks to an all-electric powertrain and harnessing the power of the sun, PHASA-35 is able to reduce operational costs, lower its carbon footprint, and offer significant advantages over traditional aircraft and satellites.

The PHASA-35 is intended for a range of uses, including Intelligence, Surveillance, and Reconnaissance (ISR), disaster relief efforts, border protection, and providing communication networks such as 4G and 5G to remote or under-connected regions. Its ability to cruise over specific areas for several months at a time makes it a cost-effective alternative to traditional satellites and aircraft.