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美国政府科技报告
>WIND TUNNEL STUDY OF THE INFLUENCE OF ORIFICE GEOMETRY AND FLOW RATES ON THE MEASURED PRESSURE ERROR OF A STATIC PRESSURE PROBE AT MACH 3
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WIND TUNNEL STUDY OF THE INFLUENCE OF ORIFICE GEOMETRY AND FLOW RATES ON THE MEASURED PRESSURE ERROR OF A STATIC PRESSURE PROBE AT MACH 3
Tests were conducted in the Jet Propulsion Laboratory's 20-inch Supersonic Wind Tunnel to determine the effect of hole-spacing geometry on the measured pressure error due to "breathing" for a pressure-sensing probe at Mach 3. 01. A long, thin, cylindrical probe was used, having one to three rows of holes, both in line and rotated with respect to each other, at various spacings between rows. Measured amounts of air were expelled from the holes, and the fractional change in measured pressure at the holes was expressed as a function of the breathing-flow parameter and the spacing.
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