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Uploaded on Mar 30, 2007
This 23-second video clip shows the XB-70A taxiing, taking off, and in flight.
The XB-70 was the world's largest experimental aircraft. Capable of flight at speeds of three times the speed of sound (2,000 miles per hour) at altitudes of 70,000 feet, the XB-70 was used to collect in-flight information for use in the design of future supersonic aircraft, military and civilian.