Acoustic emissions testing of air storage vessels at APTU is cost-savings effort
A new technique was recently used at the AEDC Aerodynamic and Propulsion Test Unit (APTU) at Arnold Air Force Base for inspecting the high pressure air storage vessels. An outside contractor was hired and members of a rope crew set sensors on the large bottles at APTU to detect flaws. Pictured is a member of the rope crew placing a sensor on one of the bottles. (U.S. Air Force photo/Rick Goodfriend)

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Photo by: Rick Goodfriend |  VIRIN: 170927-F-RS654-015.JPG