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Strain Gauge Balance Uncertainty Analysis at NASA Langley: A Technical ReviewThis paper describes a method to determine the uncertainties of measured forces and moments from multi-component force balances used in wind tunnel tests. A multivariate regression technique is first employed to estimate the uncertainties of the six balance sensitivities and 156 interaction coefficients derived from established balance calibration procedures. These uncertainties are then employed to calculate the uncertainties of force-moment values computed from observed balance output readings obtained during tests. Confidence and prediction intervals are obtained for each computed force and moment as functions of the actual measurands. Techniques are discussed for separate estimation of balance bias and precision uncertainties.
Document ID
19990041532
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Tripp, John S.
(NASA Langley Research Center Hampton, VA United States)
Date Acquired
August 19, 2013
Publication Date
March 1, 1999
Publication Information
Publication: First International Symposium on Strain Gauge Balances
Issue: Pt. 1
Subject Category
Instrumentation And Photography
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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