Hydrogen test for spy plane

Here's a more novel look at hydrogen use - from the heavily militaristic corporate sector!

Boeing has successfully tested the hydrogen propulsion system of its High Altitude Long Endurance (HALE) unmanned spy aircraft using an engine developed by Ford. During the test, the engine ran for nearly four days in a control chamber at Aurora Flight Sciences in Manassas, Virginia, and for three days in simulated conditions at 65,000ft....

...The Boeing HALE aircraft, which can carry payloads of up to 910kg, is designed to maintain a persistent presence over ground locations from stratospheric altitudes in seven-day sorties. It promises battlefield intelligence, surveillance and reconnaissance, border observation, port security and telecommunications. Production versions of the aircraft will be propeller-driven, lightweight and have a high-aspect ratio wing.

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