- High Altitude Long Endurance vehicle (HALE), Persistent High Altitude Solar Aircraft (PHASA)- 35has the potential to remain airborne for a year is the First ever long endurance solar-powered unmanned aircraft which has successfully completed its maiden test flight and it developed by BAE systems in collaboration with Prismatic Ltd.
About Phasa-35:
- PHASA-35 is an alternative to satellite having all the qualities of an aircraft, and it remains airborne within the stratosphere but above the weather and conventional air traffic level.