Keywords: wind tunnel windtunnel lewis unitary plan wind tunnel lewisunitaryplanwindtunnel lewis research center lewisresearchcenter naca blackandwhite monochrome black and white One of three control panels in the control room of the Lewis Unitary Plan Wind Tunnel. The tunnel model (top center) shows position of the valves that control the operating cycle of the tunnel. The TV monitor screens can be connected to any of 3 closed-circuit TV cameras used to monitor tunnel components. One of three control panels in the control room of the Lewis Unitary Plan Wind Tunnel. The tunnel model (top center) shows position of the valves that control the operating cycle of the tunnel. The TV monitor screens can be connected to any of 3 closed-circuit TV cameras used to monitor tunnel components. |