DocumentCode :
829616
Title :
Combination probe for hi-frequency unsteady aerodynamic measurements
Author :
Ng, W.F. ; Popernack, T.G., Jr.
Author_Institution :
Dept. of Mech. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Volume :
24
Issue :
1
fYear :
1988
fDate :
1/1/1988 12:00:00 AM
Firstpage :
76
Lastpage :
84
Abstract :
A combination probe for time-resolved measurements of unsteady compressible flows in transonic wind tunnels is described. The probe measures stagnation (total) temperature and pressure, static pressure, and flow angles in two planes. From these, the fluctuating mass flux, Mach number, and velocity, as well as their components in three directions, can be deduced. The combination probe consists of a dual hot-wire aspirating temperature and pressure probe mounted piggyback with a high-frequency angle probe. The angle probe has four surface-mounted silicon pressure sensors. A scheme for retrieving from the four pressure signals the stagnation and static pressures. Mach number, and flow angles in two planes, is described. The calibrations forming the base for this procedure, obtained from steady-state tests, are given. Typical data obtained in the Karman vortex street shed from a cylinder and at the exit of a Mach 0.4 air jet are presented
Keywords :
calibration; flow measurement; pressure measurement; probes; velocity measurement; wind tunnels; Karman vortex street shed; Mach 0.4 air jet; Mach number; Si pressure sensor; aerodynamic measurements; calibrations; combination probe; dual hot wire probe; flow angles; fluctuating mass flux; high-frequency angle probe; static pressure; steady-state tests; temperature; time-resolved measurements; transonic wind tunnels; unsteady compressible flows; velocity; Aerodynamics; Calibration; Fluid flow measurement; Pressure measurement; Probes; Silicon; Steady-state; Temperature measurement; Temperature sensors; Testing;
fLanguage :
English
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9251
Type :
jour
DOI :
10.1109/7.1037
Filename :
1037
Link To Document :
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