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Flow direction measurement criteria and techniques planned for the 40- by 80-/80- x 120-foot wind tunnel integrated systems tests (1985)

Hoffmann, J. ; Zell, P. T. ; Sandlin, D. R.

In: CASI

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Publication Date: 2019-07-13

Description: A study was performed in order to develop the criteria for the selection of flow direction indicators for use in the Integrated Systems Tests (ISTs) of the 40 by 80/80 by 120 Foot Wind Tunnel System. The problems, requirements, and limitations of flow direction measurement in the wind tunnel were investigated. The locations and types of flow direction measurements planned in the facility were discussed. A review of current methods of flow direction measurement was made and the most suitable technique for each location was chosen. A flow direction vane for each location was chosen. A flow direction vane that employs a Hall Effect Transducer was then developed and evaluated for application during the ISTs.

Keywords: FLUID MECHANICS AND HEAT TRANSFER

Type: NASA-CR-176969 , NAS 1.26:176969

Format: application/pdf

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