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Published September 1929 | Published
Journal Article Open

Motor control for wind tunnel: Precision speed regulation for the wind tunnel motor at California Institute of Technology


A wind tunnel for testing model airplanes and their parts requires accurate control of the air velocity. This paper describes a tunnel having electric drive for producing the air movement and explains a system of control, which allows a wide range of speeds and holds the speed very constant at any set value. Either hand or automatic regulation may be employed. The hand control is used for fairly constant speed while the automatic control gives very close regulation.

Additional Information

Presented at the Pacific Coast Convention of the A.I.E.E., Santa Monica, Calif, Sept. 3-6, 1929. Acknowledgement: The author wishes to acknowledge the kind cooperation of many members of the staff of the California Institute of Technology, especially Mr. L. G. Fenner, Superintendent of Wiring; also of many members of the engineering staffs of the Westinghouse Electric & Manufacturing Company and General Electric Company.

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Published - WALewis06535434.pdf


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August 19, 2023
October 20, 2023