> our title:
Lockheed Unveils Two New UAV Designs
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Lockheed Martin Introduces Ruggedized Extreme Endurance UAS
(Source: Lockheed Martin Aeronautics Company; issued August 16, 2011)
PALMDALE, Calif. --- Lockheed Martin has developed a ruggedized version of its Stalker Unmanned Air System (UAS), called the Stalker eXtreme Endurance (XE) UAS.
The Stalker XE system quadruples Stalker's flight endurance to eight-plus hours without impacting the mobility of the unmanned system or the flexibility of its payload capabilities.
"Missions requiring real time eyes-on a situation for extended periods of time, like border patrol, pipeline surveillance and special operations can now be conducted by a small UAS versus a larger, more costly system," said Tom Koonce, Lockheed Martin's Stalker program manager. 'The convenience and lower cost of a small UAS combined with extended endurance is a true game-changer."
The Stalker XE system is powered by Ultra Electronics' pioneering hybrid energy source using a propane fuel cell with a small, conventional lithium polymer battery to handle power peaks. This long-endurance fuel cell technology was developed through an innovative Defense Advanced Research Projects Agency (DARPA) sponsored effort led by Lockheed Martin and Adaptive Materials Incorporated (now a division of Ultra Electronics Holdings, plc).
The DARPA project culminated with a rigorous flight test program including numerous back-to-back, long endurance intelligence, surveillance and reconnaissance high altitude and high wind flights proving that the Stalker UAS met or exceeded all technical and performance milestones.
The complete Stalker XE system includes two aircraft, fuel cells, command and control ground station, support equipment, and small propane fuel storage tank. The standard air vehicle sensor is a modular dual daylight and night-time imager that allows persistent surveillance during the visual/thermal transition from day to night. (ends)
Lockheed Martin Unveils Samarai Flyer at Unmanned Vehicle Conference
(Source: Lockheed Martin; issued August 16, 2011)
WASHINGTON --- Inspired by a maple seed, Lockheed Martin's Samarai handheld vehicle flew publically for the first time today at the Association for Unmanned Vehicle Systems International conference.
Weighing less than half a pound, Samarai demonstrated vertical takeoff and landing, stable hover, and on-board video streaming. While the aircraft flew a series of flights in the roughly 40 foot test area, it streamed live video from a camera that rotated around its center providing a 360 degree view without a gimbal.
"Our team has taken the basic shape and design of the naturally aerodynamic maple seed and harnessed it with flight controls and avionics," said Kingsley Fregene, principal investigator for Samarai at Lockheed Martin's Advanced Technology Laboratories. "We've learned a great deal about biologically inspired vehicles that we can apply across thelaboratory, including a better understanding of micro-robots and the devices that control their movement."
Samarai is mechanically simple with only two moving parts. Because its 16 inches long and weighs less than half a pound, an operator can easily carry the vehicle in a backpack and launch it from the ground or like a boomerang. The design is scalable to meet different missions, including surveillance and reconnaissance and payload delivery.
Lockheed Martin tested the first 3-D printed Samarai last week. The vehicle was produced by "printing" successive small layers of plastic to create a single form. The printer eliminates expensive production costs, allowing engineers to quickly and affordably produce Samarai tailored to specific missions.
Headquartered in Bethesda, Md., Lockheed Martin is a global security company that employs about 126,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. The Corporation's 2010 sales from continuing operations were $45.8 billion.