A Modernized Control System for the David Taylor Naval Ship R & D Center's 36 Inch Variable Pressure Water Tunnel,
DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD
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The 36-Inch Variable Pressure Water Tunnel VPWT facility at DTNSRDC was placed in operation in 1963. Since then the tunnel has essentially been used full time. In July 1980, DTNSRDC implemented a program to refurbish and upgrade the tunnel machinery and to replace the facility control system with state-of-the-art equipment. This should result in a more efficient facility capable of meeting the needs of our engineering staff and research scientists for the next two decades. The new control system is expected to improve the daily operating functions of the facility and to obtain experimental data at a higher level of productivity. The refurbishments consist of rebuilding and replacing certain pieces of machinery, modifying and upgrading the auxiliary water piping and replacing the control system. This paper presents an overview of the functional operation of the 36-Inch VPWT and a description of the new system. The new approach taken by DTNSRDC with this facility is defined from an operational point of view. How and why the new computer based control system was selected is explained.