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Robot plane completes two successful test flights

MAR 22, 2011
Physics Today
CNET : Earlier this month, Northrop Grumman’s X-47B unmanned aircraft made its second and third test flights at Edwards Air Force Base in California. The X-47B, designated UCAS for unmanned combat air system, is a prototype going through its fledgling stage en route to the goal of demonstrating in 2013 that an unmanned, tailless, strike fighter-size aircraft can land on and take off from an aircraft carrier, according to Jonathan Skillings, writing for CNET News. Under contract with the US Navy, Northrop Grumman is also building a second, similar aircraft, which will include aerial refueling equipment.
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