Carrier-based flight trials of the U.S. Navy’s X-47B Unmanned Combat Air System-Demonstrator (UCAS-D) aboard the USS George H.W. Bush were briefly brought to a halt last week due to an unlikely frequency-sharing issue between the air vehicle and officials of the National Oceanic and Atmospheric Administration, which is trying to fix a problem with a faulty weather satellite. The U.S. Navy was able to restart flights of the Northrop Grumman X-47B demonstrator quickly after a brief stand ...


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