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Solar-powered UAV stays afloat for record seven days

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The Zephyr solar aircraft. A QinetiQ photo

LOS ANGELES (AFP): An ultra-light unmanned aircraft powered by solar energy and designed for military surveillance and other uses has stayed in the air a record seven days, its manufacturer has said.

The British-based firm QinetiQ said its 22.5 metre long Zephyr, weighing just 50 kilos, continued to fly over a US military testing ground in Arizona, and could stay aloft for another week.

The flight doubled the unofficial world record for the longest duration unmanned flight of 82 hours by the same aircraft in 2008. Zephyr's records will not become official until the aircraft is back on the ground.

“The current goal is to fly for a further week and prove Zephyr is the world's first truly eternal plane, capable of providing a low-cost, persistent surveillance capability over months rather than days,” a company statement said.

“Potential applications include earth observation and communications relay in support of a range of defence, security and commercial requirements.”

The latest model of the carbon-fibre Zephyr is around 50 per cent bigger than earlier versions, giving it more space for batteries. The batteries are charged by the sun to allow it to continue flying at night.

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UAV   solar plane  
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