Wind power at Arnold AFB
Dr. Richard Roberts walks the outer ring of the diffuser section at the 16-foot supersonic wind tunnel Oct. 6, 2009, at Arnold Air Force Base, Tenn. Dr. Roberts is the project manager of the von Karman Gas Dynamics Facility and the Propulsion Wind Tunnel Facility located at Arnold Engineering Development Center on Arnold AFB. The facility is devoted to aerodynamic and propulsion integration testing of large-scale aircraft models. (U.S. Air Force photo/Lance Cheung)