The high subsonic wind tunnel is an open-return tunnel.  The facility includes a 100hp blower, a diffuser, a settling chamber, a contraction (having a 5th order polynomial shape), an inlet duct and a diffuser.  The facility is used to test engine inlets.  The test section is interchangeable with a minimum cross sectional area of 3.5 inches x 4.5 inches.  The maximum achievable spead is Mach 0.7 which corresponds to mass flow rates of approximately 2.3 kg/s.