Long-endurance, hydrogen-powered Phantom Eye UAV unveiled

Unveiled earlier this week in St. Louis, Boeing's Phantom Eye will set a new benchmark in long-endurance unmanned aerial vehicle (UAV) technology when it takes to the skies in 2011. With a wing-span of 150-feet, the hydrogen-powered aircraft will cruise at 150 knots, carry up to 450-pounds and stay aloft at 65,000 feet for up to four days. Boeing calls it a game-changer, and plans are already in progress to build a bigger version that can remain airborne for 10 days.

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