European Stars And Stripes (Newspaper) - September 3, 1950, Darmstadt, Hesse                                The age of supersonic Speed is close upon incredible As it the Day when we travel faster than the Earth turns on its or faster than time May not be so far already in operation is the worlds largest supersonic wind Tunnel for testing aircraft engines designed for speeds double that of built by the Lewis flight propulsion Laboratory of the National advisory committee for aeronautics at Cleveland air this test Section is eight feet High and six feet providing the first Opportunity to study Large models of Turbo Jet and Ramjet engines in operation at fantastic under conditions of temperature and pressure simulating flight conditions near feet of the Speed of sound varies with the density of the ranging from 760 Mph at sea level to 660 Mph at about feet a few men have already travelled faster than though for Many years aeronautical engineers believed that supersonic flight was impossible of the tremendous engine Power the Naca wind for which Congress appropriated will test Only Jet and rocket through its 35footlong chamber is blown a Gale of rarefied air twice the Speed of a giant air compressor at the new Cleveland wind in this photo the two halves of the stator Blade housing have been opened to show Rotor Blades on the massive compressor is driven by produces wind at twice Speed of 20 Miles a flow of wind around models is observed above by Schlieren apparatus through win Dow in test Section closeup of Blades above on seven stage there Are about Blades on this engineers left prepare a supersonic Model for test ing in a Section of the wind Tunnel at stability and control characteristics of an p84 Are determined in Tunnel at Moffett Calit in the stars and stripes