NOVA/PBS NOVAPBS
Helios (USA)
The Helios, now under development, will incorporate a fuel cell energy storage system to provide power for flying through the night, making it capable of continuous flight at 50,000 - 70,000 feet for months at a time. Within 10 years, Helios aircraft are expected to be widely deployed as broadband communications platforms, providing a uniquely cost-effective complement to satellite and terrestrial communication systems.

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