5 INCH RAM JET MOUNTED IN 2X2 FOOT SUPERSONIC TUNNEL
A researcher views a small ramjet in the 24-by 24-inch test section of a small supersonic wind tunnel (2/7/1952).
Image Credit: NASA
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https://www.nasa.gov/image-detail/grc-1952-c-29140/
Image CreditNASA
Size2586x2237px