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Uncertainty Analysis of the NASA Glenn 8x6 Supersonic Wind TunnelThis paper presents methods and results of a detailed measurement uncertainty analysis that was performed for the 8- by 6-foot Supersonic Wind Tunnel located at the NASA Glenn Research Center. The statistical methods and engineering judgments used to estimate elemental uncertainties are described. The Monte Carlo method of propagating uncertainty was selected to determine the uncertainty of calculated variables of interest. A detailed description of the Monte Carlo method as applied for this analysis is provided. Detailed uncertainty results for the uncertainty in average free stream Mach number as well as other variables of interest are provided. All results are presented as random (variation in observed values about a true value), systematic (potential offset between observed and true value), and total (random and systematic combined) uncertainty. The largest sources contributing to uncertainty are determined and potential improvement opportunities for the facility are investigated.
Document ID
20160013865
Document Type
Contractor Report (CR)
Authors
Stephens, Julia (HX5, LLC Cleveland, OH, United States)
Hubbard, Erin (Jacobs Technology, Inc. Cleveland, OH, United States)
Walter, Joel (Jacobs Technology, Inc. Bingham Farms, MI, United States)
McElroy, Tyler (Jacobs Technology Inc. Tullahoma, TN, United States)
Date Acquired
November 30, 2016
Publication Date
November 1, 2016
Subject Category
Engineering (General)
Statistics and Probability
Report/Patent Number
E-19309
NASA/CR-2016-219411
GRC-E-DAA-TN36213
Funding Number(s)
WBS: WBS 147016.03.03.04.03
CONTRACT_GRANT: NNL13AA14C
CONTRACT_GRANT: NNC15BA02B
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Error
Propagation
Uncertainty

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