BAE Systems has built two PHASA-35 solar-powered high-altitude long-endurance (HALE) unmanned aerial vehicles (UAVs) that can remain aloft for up to a year, the company announced on 10 September.
The disclosure at the DSEI exhibition in London came about 15 months after the company revealed the Persistent High-Altitude Solar Aircraft (PHASA) concept it was developing in partnership with UK company, Prismatic. The 150 kg PHASA-35, which has a 35 m wingspan, will begin flight trials in late 2019/early 2020.
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