A combination probe for high-frequency unsteady aerodynamic measurements in transonic wind tunnelsA combination probe for time-resolved measurements for unsteady compressible flows 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 is described for retrieving from the four pressure signals the stagnation and static pressures, Mach number, and flow angles in two planes. The calibrations forming the basis 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.
Document ID
19880049264
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ng, Wing F. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Popernack, Thomas G., Jr. (Virginia Polytechnic Institute and State University Blacksburg, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: ICIASF ''87 - International Congress on Instrumentation in Aerospace Simulation Facilities