A series of flight tests of the Stalker Unmanned Aerial System (UAS) have been successfully accomplished by Lockheed Martin and LaserMotive that enables further verification and affirmation on the innovative laser power system’s efficiency. These tests signify the first outdoor flight of a laser-powered UAS.
Stalker is a compact, silent UAS that enable Special Operations Forces to achieve intelligence, surveillance and reconnaissance missions, since 2006. During a recent wind tunnel test, over 48 h of consistent flight was demonstrated by this laser system-driven UAS.
In order to achieve this demonstration, a lightweight photovoltaic receiver was equipped to the Stalker, in addition to on-board power management hardware. The ground-based laser transmitter uses the LaserMotive’s hardware that was specially created for its winning entry during NASA Centennial Challenge 2009.
These proof-of-concept flights features operated multiple test flights for various desert conditions like high temperatures, day and night, and strong winds, through which the robustness of the Stalker-mounted laser receiver power system was demonstrated. It includes verified net positive power to Stalker in flight, ranging up to 600 m. It complies with all operational and safety requirements like synchronization with flight operations and the Laser Clearinghouse. Ensured safety of laser within Stalker and secured normal flight operations or aerodynamics. The receiver was tracked for long periods using beam director with centimeter precision at 500 m , regardless of turbulence and aircraft maneuvers.
Source: http://www.lockheedmartin.com/