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single plexiglas mold that is 48 in. long by 12 in. high by 6 in. wide. The removable test section is joined to the plexiglas transition section and the diffuser ducts with flanges. The wind tunnel cover consists of a hinged ceiling plate that can be raised or lowered with a screw. As a result, the ceiling can be diverged from 0' to 1.8'. To minimize air leak at the sides of the ceiling plate, a self-adhesive felt gasket is used as sealant. The ceiling for the duct downstream from the test section is connected to the diverging ceiling and transitions back to the 6.00 in. test section height. Along the span wise centerline of the ceiling plate, a 0.63 in. wide by 43.18 in. long slot is machined on the diverging part. The slot allows access of instrumentation into the test section. To minimize air leaks through the unused area of the slot, a high-density nylon brush with extruded aluminum holder is used. This brush is secured to the ceiling plate with screws. A series of 22 static pressure taps (with nylon barbed fittings) are located at 1.50 in. distance from the spanwise centerline towards the sidewall. The centers of the static pressure ports are placed at an interval of 2.13 in. along the flow direction.

    To run the test section as a conventional air wind tunnel, a removable floor, fabricated from 0.5 in. thick, clear acrylic plexiglas is provided. The floor has lap flanges that correspond to steps machined into the permanent mid-height ends in the test section. The floor is secured with screws.

    An additional, shorter wind tunnel test section is provided to allow the wind tunnel to be used separately from the water tunnel. The test section can be mounted directly to the contraction exit. The working section is 18 in. long by 6 in. high by 6 in. wide in the interior. Plexiglas flanges join the test section to the contraction section and the diffuser