Quiet wind tunnel
Dr. Steven Schneider, a professor at Purdue's School of Aeronautics and Astronautics, operates the Boeing/AFOSR Mach 6 Quiet Wind Tunnel, which he and his team have been perfecting for over a decade. The Mach 6 tunnel is the only facility in the world capable of operating quietly at hypersonic speeds. (Photo courtesy of David Umberger)
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