ELECTRIC WIND TUNNEL AIR HEATER, PREFERABLY OF GREATER SUPERSONIC SPEED WIND TUNNELS,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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The invention consists of an electric air heater for a wind tunnel, preferably of greater supersonic velocities, to assure uniform field of temperatures of the air entering the nozzle of the tunnel. A rectifying tunnel grid, made of a material with greater ohmic resistance, was used in place of electric resistance elements of the heater.