Another Vertical Wind Tunnel: The Sikorsky Aircraft Corporation's Tunnel for Spinning Experiments at Bridgeport

THE first recorded mention of a project for the construction of a vertical wind tunnel appears to be contained in the Report of the National Advisory Committee for Aeronautics for the year ending June 30, 1928, when the advantages of a tunnel of this type for spinning experiments were pointed out and the decision to build one announced. The fact that it had been started was mentioned in the following year's report and its completion announced in the report for 1930. A full description of this tunnel, which forms part of the research equipment at the Langley Memorial Laboratory, was published in AIRCRAFT ENGINEERING, Vol. IV, February, 1932, pp. 29–31. A brief description of the R.A.E. vertical tunnel was given by Mr. A. V. Stephens in AIRCRAFT ENGINEERING, Vol. III, September. 1931, at page 215.