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"Highlights from the second test flight of the X-43A hypersonic aircraft."
see also: X-43 3rd test flight (to Mach 10)
http://youtu.be/6bS4drItm1U
Public domain film from NASA, slightly cropped to remove uneven edges, with the aspect ratio corrected, and mild video noise reduction applied.
The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, i
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