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Tunnel 9 personnel provides guidance for hypersonic experiment
The Boundary Layer Transition, or BOLT, subscale model is tested in the Purdue University Mach-6 Quiet Tunnel. The aim of the basic science BOLT experiment, which is being sponsored by the Air Force Research Laboratory/Air Force Office of Scientific Research and conducted by the Johns Hopkins University Applied Physics Laboratory (JHU-APL), along with the University of Minnesota, Purdue University, Texas A&M University, AFRL Aerospace Systems Directorate, NASA Langley, CUBRC, VirtusAero and DLR in Germany, is to predict the state of the boundary layer, or the thin layer of air near the surface, on a new canonical geometry. Personnel at AEDC Hypervelocity Wind Tunnel 9 in White Oak, Maryland, recently provided sensor installation training to JHU-APL staff members. (Courtesy photo by Air Force Office of Scientific Research/Johns Hopkins University Applied Physics Laboratory)

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