Use of porous-plug orifice reduces or eliminates errors, induced by orifice itself, in measuring static pressure on airfoil surface in wind-tunnel experiments. Piece of sintered metal press-fitted into static-pressure orifice so it matches surface contour of model. Porous material reduces orifice-induced pressure error associated with conventional orifice of same or smaller diameter. Also reduces or eliminates additional errors in pressure measurement caused by orifice imperfections. Provides more accurate measurements in regions with very thin boundary layers.
Reduction of Orifice-Induced Pressure Errors
NASA Tech Briefs ; 11 , 7
1987-07-01
Miscellaneous
No indication
English
Status of orifice induced pressure error studies
AIAA | 1984
|British Library Conference Proceedings | 1986
|Static Pressure Orifice Imaging & Data Correlation
NTIS | 2022
|