US Patent 7926339 Vertical wind tunnel with viewing facility

The invention is directed to a wind tunnel designed to operate along a vertical section such that air currents, generated by appropriate fans, meet in a vertical area wherein the air currents are capable of lifting objects in this vertical area. the lifting effect may be seen on the outside of the wind tunnel as the tunnel is built from translucent materials. The viewing and lifting of bodies in the vertical section of the tunnel allows both their display and for measurements to be taken of the bodies.