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The Containerized Vacuum System (CVS) is now in place at Arnold Engineering Development Complex Hypervelocity Wind Tunnel 9 in White Oak, Maryland. The primary purpose of the CVS is to reduce the pressure in the 200,000 cubic foot Tunnel 9 Vacuum Sphere, pictured in the background, to levels at which test operations can be performed. Tunnel 9 personnel moved forward with the installation of the CVS after one of the compressors in the Tunnel 9 Vacuum Compressor Plant went down and required repairs. (U.S. Air Force photo by Nicholas Fredrick)
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