Quiet Engine installed in the Propulsion Systems Laboratory (PSL)
General Electric Quiet Engine installed in the Propulsion Systems Laboratory (PSL) No. 3 test chamber. The 24-foot diameter test chamber was ten feet wider than the original Propulsion Systems Laboratory (PSL) No. 1 and 2 chambers. (2/10/1973)
Image Credit: NASA/MARTIN BROWN
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https://www.nasa.gov/image-detail/grc-1973-c-00704/
Image CreditNASA/MARTIN BROWN
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