The last of the lifting-body research vehicles was the X-24, the A version of which first flew (unpowered) in 1969. The version seen in flight here is the X-24B, which hit a top speed of 1,164 mph and an altitude of 74,130 feet.
April 11, 2010 6:00 AM PDT
Photo by: NASA
| Caption by: Jonathan Skillings
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