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Computer Model to Simulate Testing at the National Transonic Facility

Computer Model to Simulate Testing at the National Transonic Facility


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About the Book

A computer model has been developed to simulate the processes involved in the operation of the National Transonic Facility (NTF), a large cryogenic wind tunnel at the Langley Research Center. The simulation was verified by comparing the simulated results with previously acquired data from three experimental wind tunnel test programs in the NTF. The comparisons suggest that the computer model simulates reasonably well the processes that determine the liquid nitrogen (LN2) consumption, electrical consumption, fan-on time, and the test time required to complete a test plan at the NTF. From these limited comparisons, it appears that the results from the simulation model are generally within about 10 percent of the actual NTF test results. The use of actual data acquisition times in the simulation produced better estimates of the LN2 usage, as expected. Additional comparisons are needed to refine the model constants. The model will typically produce optimistic results since the times and rates included in the model are typically the optimum values. Any deviation from the optimum values will lead to longer times or increased LN2 and electrical consumption for the proposed test plan. Computer code operating instructions and listings of sample input and output files have been included. Mineck, Raymond E. and Owens, Lewis R., Jr. and Wahls, Richard A. and Hannon, Judith A. Langley Research Center RTOP 505-59-10-31...


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Product Details
  • ISBN-13: 9781722122195
  • Publisher: Createspace Independent Publishing Platform
  • Publisher Imprint: Createspace Independent Publishing Platform
  • Height: 279 mm
  • No of Pages: 50
  • Spine Width: 3 mm
  • Width: 216 mm
  • ISBN-10: 1722122196
  • Publisher Date: 01 Jul 2018
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 141 gr


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