US develops drone that can stay in sky for 48 hours
The Stalker Unmanned Aerial System (UAS), developed by aerospace company Lockheed Martin, has been kept in the air for 48 hours using a radical new laser power system during trials.
This increase in flight time represents an improvement of 2,400 per cent and could eventually keep military spy drones in the sky forever, the developers said. The small, silent UAS is already used by Special Operations Forces since 2006 to perform intelligence, surveillance and reconnaissance missions.
"We're pleased with the results of this test. Laser power holds real promise in extending the capabilities of Stalker," Tom Koonce, programme manager at Lockheed Martin Skunk Works Stalker said.
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