Laser-Powered Helicopter Hovers for Hours

An unmanned aerial surveillance drone is only as good as its power source, and as such many technologies are being considered that could drastically extend the duration of drone missions – for instance, DARPA’s Vulture program has helped develop a giant solar plane that, theoretically, could fly for five years straight. But Seattle-based LaserMotive thinks laser power is the answer, and to prove it they recently kept a tiny 22-gram helicopter aloft for hours by beaming power to it via a laser.

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