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Proceedings Paper

High-frequency temperature sensing
Author(s): Wing Ng
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Paper Abstract

A high-frequency response dual hot-wire aspirating probe which can measure the time- resolved stagnation temperature and pressure in an unsteady high-speed gas flow is described. The probe consists of two coplanar constant temperature hot wires at different overheat ratios, operated in a channel with a choked exit. Thus, the constant Mach number by the wires is influenced only by free-stream total temperature and pressure. The probe was used in three separate experiments. The experiments include measurements of the flowfield at the exit of transonic fans during steady-state operation, measurements of turbulence intensity in the wake of a transonic turbine cascade, and measurements of the exit flowfield in a transonic core- compressor during rotating stall. The paper describes the performance of the probe in all three experiments. Brief descriptions of the experiments are given and exemplary data are presented.

Paper Details

Date Published: 30 May 1995
PDF: 9 pages
Proc. SPIE 2494, Sensing, Actuation, and Control in Aeropropulsion, (30 May 1995); doi: 10.1117/12.210506
Show Author Affiliations
Wing Ng, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 2494:
Sensing, Actuation, and Control in Aeropropulsion
James D. Paduano, Editor(s)

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