Northrop Grumman, U.S. Navy Complete Second, Third Flights of X-47B Unmanned Combat Air System

Less than a month after completing the first flight of the U.S. Navy's X-47B UCAS-Demonstration aircraft, flight test engineers from Northrop Grumman Corporation and the Navy have successfully completed the aircraft's second and third flights.

The flights, both conducted at Edwards Air Force Base, mark the beginning of a process called envelope expansion during which the test team will begin proving that the tailless aircraft can perform safely over a broad range of altitudes, air speeds and operating weights.

During the X-47B's 39-minute second flight on March 1, the aircraft flew to an altitude of 7,500 feet at speeds up to 200 knots. During its 41-minute third flight on March 4, the aircraft reached an altitude of 7,500 feet and a top speed of 180 knots. By comparison, the X-47B flew only to 5,000 feet at a top speed of 180 knots during its first flight Feb 4.

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