Publication Date:
2019-07-13
Description:
A spherical probe having five surface mounted silicon pressure sensors is described. The probe is 0.2 inches in diameter yielding a frequency response above 30 kHz. A scheme is described for retrieving from the five pressure signals the stagnation and static pressures, Mach number and flow angles in two planes. The calibrations forming the base for this procedure, obtained from steady state tests, are given in the form of polynomials in the two flow angles. A method for compensating the silicon pressure sensors for thermal effects is given. Typical data obtained in the MIT Blowdown Compressor are presented in raw form and after reduction to flow angles, Mach number and stagnation pressure.
Keywords:
INSTRUMENTATION AND PHOTOGRAPHY
Type:
Measurement methods in rotating components of turbomachinery; Mar 10, 1980 - Mar 13, 1980; New Orleans, LA
Format:
text
