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Non-nulling seven-hole probes for high angle flow measurementThis paper illustrates a method for calibrating seven-hole probes to measure local total and static pressures and relative flow angles of up to 70 degrees in subsonic compressible flows. The method of Latin Squares was used to statistically sample a large and otherwise unmanageable data set, thereby reducing to a minimum the number of data points required to construct a polynomial curve fit to the data. Calibration produces three-variable third order polynomials which permit all of the desired flow properties to be found explicitly from probe measured pressures. This method determines the flow angles to within 2 degrees and Mach number to within 0.04 with 95 percent certainty.
Document ID
19840049886
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Gerner, A. A.
(Air Force Academy CO, United States)
Maurer, C. L.
(Air Force Academy CO, United States)
Gallington, R. W.
(U.S. Air Force Academy Colorado Springs, CO, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1984
Publication Information
Publication: Experiments in Fluids
Volume: 2
Issue: 2, 19
ISSN: 0723-4864
Subject Category
Instrumentation And Photography
Accession Number
84A32673
Distribution Limits
Public
Copyright
Other

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