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A Large French Wind Tunnel

Nature volume 135, pages 252253 (16 February 1935) | Download Citation



THE large wind tunnel which has just been completed at Chalais-Meudon is of considerable interest. It is the second tunnel capable of testing a full-sized aeroplane to be constructed, the first being the 60 ft. x 30 ft. tunnel at Langley Field, U.S.A., and it differs in one very important respect from any other wind tunnel, in that it is built in the open. In general design it is not unlike the tunnel built by Eiffel in 1912 at Auteuil; a type now generally known by his name. Air is drawn in through a contracting inlet and then passes as a parallel free jet across the observation chamber into a collector cone in which a gradual expansion takes place in order to recover most of the kinetic energy of the stream.

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