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The AGARD-C model is installed in the 16-foot transonic wind tunnel at Arnold Air Force Base, Tenn. to assess the quality of the airflow through the tunnel, Nov. 17, 2021. The model is a standard model that can be used to compare and contrast data collected during different timeframes or from different tunnels to ensure the data taken during testing is reliable. (U.S. Air Force photo by Jill Pickett)
24.0-70.0 mm f/2.8
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