PROJECT MERCURY – ASTRONAUT JOHN H GLENN JUNIOR TESTING THE GIMBALING RIG IN THE ALTITUDE WIND TUNNEL AWT AT NASA LEWIS RESEARCH CENTER
Robert Miller and James Useller with John Glenn. The men were the driving forces behind the creation and operation of the MASTIF (1960).
Image Credit: NASA
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https://www.nasa.gov/image-detail/grc-1960-c-52744/
Image CreditNASA
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