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Lockheed Martin Stalker drone stays airborne 48 hours using laser power, all-seeing eye gets literal (video)
Aerial drone designers have been pushing hard to get devices that can stay airborne for days. After all, what's the point of having an observer that routinely lets its guard down? Lockheed Martin must have this question forever etched in its collective mind, as it just completed tests of a modified Stalker drone that was continually charged by laser power beamed from a ground-based source. The LaserMotive-built test was admittedly conducted in a wind tunnel, not a wind-swept battlefield, but it kept the drone aloft for more than 48 hours and was so efficient that it might even have gone indefinitely, if it weren't for staff intentionally bringing the trial to a halt. The true test is coming next, when Lockheed Martin and LaserMotive fly the drone on laser power outdoors. Should the Stalker sail the friendly skies for long enough, it could help usher in an era of UAVs that can spot intruders at all hours -- a little too close to the aircraft's name for comfort, perhaps, but potentially vital for Special Operations troops that might not have to put themselves in danger. You can check the underpinnings of both the laser power system and the Stalker in videos after the break.
LaserMotive's unnamed quadrocopter hovers for 12 solid hours using lasers alone
Protip: $900,000 goes a long way, particularly when you're dumping practically all of it into a single investment (Hello Kitty lap warmers notwithstanding). LaserMotive, the company lauded for bringing home nearly a million bucks in the 2009 NASA-sponsored Space Elevator Games, has just broken an endurance record for laser-powered hovering with its unnamed Pelican. This here quadrocopter is designed to get energized by converting beams into power via a set of photovoltaic panels on its underside, and in a recent test, lasers were able to keep it afloat for over 12 hours. It never hovered much higher than 30 feet, and it barely moved from left to right while in the air, but we're guessing it was marginally more interesting than watching paint dry. All jesting aside, the milestone makes it a lot more feasible for the company to get this technology into UAVs used in the military -- "for example, laser-powered copters could perform on-the-road reconnaissance missions when convoys travel through a combat zone." And if you're looking to take home something similar on a far smaller scale, there's always the AR.Drone.
