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Check Six: July 17, 1962 – 55 years ago

July 17, 2017
click on photograph to enlarge

click on photograph to enlarge

The North American X-15 was a hypersonic rocket-powered aircraft operated by the United States Air Force and the National Aeronautics and Space Administration as part of the X-plane series of experimental aircraft. The X-15 set speed and altitude records in the 1960s, reaching the edge of outer space and returning with valuable data used in aircraft and spacecraft design. As of September 2015, the X-15 holds the official world record for the highest speed ever recorded by a manned, powered aircraft. It could reach a top speed of 4,520 miles per hour (7,274 km/h), or Mach 6.72

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