NATIONAL PHYSICAL LABORATORY (C) CROWN COPYRIGHT / SCIENCE PHOTO LIBRARY NATIONAL PHYSICAL LABORATORY (C) CROWN COPYRIGHT / SCIENCE PHOTO LIBRARY
Wind tunnel nozzle. This is an adjustable nozzle for a supersonic wind tunnel. The nozzle width can be changed to alter the speed of the wind flowing through the tunnel. Photographed in 1953, in the Aerodynamics Division of the National Physical Laboratory, Teddington, UK.
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