Thermal sensing of cryogenic wind tunnel model surfaces - Evaluation of silicon diodesDifferent sensors and installation techniques for surface temperature measurement of cryogenic wind tunnel models were investigated. Silicon diodes were selected for further consideration because of their good inherent accuracy. Their average absolute temperature deviation in comparison tests with standard platinum resistance thermometers was found to be 0.2 K in the range from 125 to 273 K. Subsurface temperature measurement was selected as the installation technique in order to minimize aerodynamic interference. Temperature distortion caused by an embedded silicon diode was studied numerically.
Document ID
19870057837
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Daryabeigi, Kamran (Old Dominion Univ. Norfolk, VA, United States)
Ash, Robert L. (Old Dominion University Norfolk, VA, United States)
Dillon-Townes, Lawrence A. (NASA Langley Research Center Hampton, VA, United States)