Radical

Radical builds StratoSats, which the site describes as autonomous, solar powered aircraft that fly in the stratosphere. The site says the aircraft can fly for months without landing, powered only by the sun. The site says they fly from about 65,000 feet and are optimized for connectivity and observation. The site does not state where the company is based.

The site says StratoSats can reposition in real time and can return to swap payloads when needed. It says they are low-cost and not limited by orbital constraints.

The company has built Evenstar, its full-scale StratoSat prototype. It has also built several sub-scale aircraft. One autonomous sub-scale prototype completed a flight of more than 24 hours at low altitude. The site's newsroom includes a report on the first flight of a full-size stratospheric drone prototype.

The site lists possible uses for the aircraft. These include ultra-high resolution imagery, maritime domain awareness, wildfire detection and monitoring, 5G direct-to-device connectivity, secure borders and approaches, search and rescue, resilient position, navigation and timing, and climate and emissions monitoring.

The site says the team brings experience from top aerospace and defense companies. It says the company builds systems grounded in physics and kept as simple as they can be. The site has careers and investors pages.

The site lists LinkedIn, X and YouTube accounts for updates.