J-57 ENGINE EQUIPPED WITH GREATREX NO. 2 NOZZLE IN THE ALTITUDE WIND TUNNEL AWT TEST SECTION
A P&W J57 engine is tested in the Altitude Wind Tunnel (AWT) with a Greatex No. 2 nozzle for a noise reduction study (2/19/1957).
Image Credit: NASA/PAUL RIEDEL
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https://www.nasa.gov/image-detail/grc-1957-c-44278/
Image CreditNASA/PAUL RIEDEL
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