The design hasn't been finalized, but the unmanned radar airship will likely use top-mounted solar cells to stay aloft for up to a year.
The airship will probably rely on low-speed electric propellers: It's intended to stay in one posi-
tion, at ...
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The airship will probably rely on low-speed electric propellers: It's intended to stay in one posi-
tion, at ...
More Information