The first generation X-1 aircraft changed aviation history in numerous ways, and not simply because they were the first aircraft to fly faster than the speed of sound. Rather, they established the concept of the research aircraft, built solely for experimental purposes. NASA continues this legacy of experimental aircraft today.
This video is available for download from NASA's Image and Video Library: https://images.nasa.gov/#/details-NHQ_2017_1012_Pushing%20the%20Envelope.html
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