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Proceedings Paper

Effect of altitude and wind velocity on optical-turbulence measurement with fine-wire resistance temperature transducers
Author(s): Vijay P. Singh; Frank D. Eaton; Roberto Rubio
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Paper Abstract

The response of fine wire resistance temperature transducer was analyzed including the effects of (i) conductive heat transfer between wire and the supporting prong and (ii) a thermal boundary layer which can form around the prongs especially at low stream velocities. The transfer function H(w) varied substantially with frequency of turbulence and density and velocity of the air stream. The a.c. gain of the sensor was evaluated as a function of altitude (0-30 km) and air stream velocity. Variation in a.c. gain with altitude can lead to a significant error in the measurement of turbulence with (delta)T probes. The error becomes even larger if the velocity of air stream (relative to sensor) becomes very small.

Paper Details

Date Published: 1 September 1990
PDF: 11 pages
Proc. SPIE 1312, Propagation Engineering: Third in a Series, (1 September 1990); doi: 10.1117/12.21872
Show Author Affiliations
Vijay P. Singh, Univ. of Texas/El Paso (United States)
Frank D. Eaton, U.S. Army Atmospheric Sciences Lab. (United States)
Roberto Rubio, U.S. Army Atmospheric Sciences Lab. (United States)


Published in SPIE Proceedings Vol. 1312:
Propagation Engineering: Third in a Series
Luc R. Bissonnette; Walter B. Miller, Editor(s)

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