4X10 INCH TUNNEL AND 3.4 INCH TUNNEL AND THE ALTITUDE WIND TUNNEL AWT DUCT LAB
The removable nozzle for the Duct Lab's 4-by 10-inch wide and 8-foot long test section (4/21/1948).
Image Credit: NASA/FRED LINGELBACH
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https://www.nasa.gov/image-detail/grc-1948-c-21286/
Image CreditNASA/FRED LINGELBACH
Size3000x1950px