The low reynolds number wind tunnel is a pull through tunnel with a 3 hp blower at the end of the tunnel.  The 4 blade turbine blower has a maximum frequency of 60 hz with a 20 inch blade diameter.  The area contraction ratio of the tunnel is 1:9 with a 4 inch x 4 inch test section that is 20 inches in length. This tunnel is run from 2 m/s to 30 m/s.