10/14/2009 10:00:00 PM
During a test flight last week, the Ion Tiger, an unmanned air vehicle (UAV), stayed airborne for approximately 23 hours and 17 minutes, setting an unofficial endurance record for a flight powered by fuel-cell technology...
LiveScience reports that the U.S. Navy has developed a hydrogen-powered aircraft that can fly for nearly an entire day without refueling. [More…]
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