NASA test pilot Joe Walker beside an X-15, following 169,000-foot altitude flight on March 30, 1961. The X-15 flew 199 times from 1959 to 1968 and was an extremely successful aeronautics research program that laid the hypersonics basis for later spacecraft such as the Space Shuttle. Image # 60-x-45 Date: March 30, 1961

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Size: 1542px × 2163px
Photo credit: © NC Collections / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -15, joe, walker