A-160 Rotary Wing UAV: Boeing Buys Long Endurance Design
Boeing Phantom Work's acquisition of Frontier Systems gives it an ummanned helicopter design featuring confirmed and unusually parsimonius fuel usage for a rotary wing aircraft. The secretive company - developer of the A-160 Hummingbird UAV - has been doing ground tests that showed it using 'about ten gallons an hour' of fuel in recent tests.
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