Abstract
The purpose of this paper is to analyze the error in the gas temperature measured by thermocouples. Correlations were established analytically between the dynamic measurement error and the parameters of a thermocouple temperature measuring system. The accuracy of the thermocouple time constant estimation was identified as a crucial factor of the dynamic error. Further, an analysis of the error in an experimentally obtained estimate of the thermocouple time constant was carried out. It revealed that the thermocouple time constant, which well represents its dynamic characteristics, can be accurately estimated with rationally planned experiments. This study provides an in situ analysis that considers the thermocouple as a part of the engine instead of a stand-alone element. The analytical solution demonstrates the correlation behind the errors and dynamic parameters, and pictures a guideline for optimizing the gas temperature measuring system of gas turbine engines.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
Jaw, L., Mattingly, J.: Aircraft Engine Controls: Design, System Analysis, and Health Monitoring. American Institute of Aeronautics and Astronautics Inc, Reston (2009)
Sinyakov, A.N., Shaimardanov, F.A.: Automatic Control Systems of Flying Vehicles and Their Power Units. Russian Federation, Moscow (1991)
Von Moll, A., Behbahani, A.R., Fralick, G.C., Wrbanek, J.D., Hunter, G.W.: A review of exhaust gas temperature sensing techniques for modern turbine engine controls. In: 50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference. American Institute of Aeronautics and Astronautics, Inc., Cleveland, OH, USA (2014)
Goldstein, D.L., Scherrer, R.: Design and calibration of a total-temperature probe for use at supersonic speeds. NACA, Technical Note 1885. Washington, D.C., USA (1949)
Glawe, G.E., Simmons, F.S., Stickney, T.M.: Radiation and recovery corrections and time constants of several chromel-alumel thermocouple probes in high-temperature, high-velocity gas streams. NACA, Technical note. 3766. Washington, D.C., USA (1956)
Glawe, G.E., Glawe, G.N., Holanda, R., Krause, L.E.: Recovery and radiation corrections and time constants of several sizes of shielded and unshielded thermocouple probes for measuring gas temperature. NACA, Technical paper 1099. Washington, D.C., USA (1978)
Scadron, M.D., Warshasky, I.: Experimental determination of time constants and nusselt numbers for bare- wire thermocouples in high-velocity air streams and analytic approximation of conduction and radiation errors. NACA, Technical note 2599. Washington, D.C., USA (1952)
Petit, C., Gajan, P., Lecordier, J.C., Paranthoen, P.: Frequency response of fine wire thermocouple. J. Phys. 15(7), 760–770 (1982)
Yule, A., Taylor, D.S., Chigier, N.A.: Thermocouple signal processing and on-line digital compensation. J. Energy 2(4), 223–230 (1978)
Simbirsky, D.F., Skripka, A.I.: Determination of the dynamic characteristics of the sensitive elements of the gas flow temperature sensors for the automatic control system of turbojets. National Aerospace University, Kharkiv, Ukraine (1993)
Zou, Z., Yang, W., Zhang, W., Wang, X., Zhao, J.: Numerical modeling of steady state errors for shielded thermocouples based on conjugate heat transfer analysis. Int. J. Heat Mass Transfer 119, 624–639 (2018)
Braun, J., Lu, S., Paniagua, G.: Development of high frequency virtual thermocouples. In: ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. ASME, Charlotte (2017)
Yepifanov, S.V., Shpylovyi, A.A., Suchovyi, S.I.J.: An indentification of thermocouple dynamic characteristics based on engine testing data. Aerosp. Tech. Tech. 66(9), 166–171 (2009)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Switzerland AG
About this paper
Cite this paper
Yepifanov, S.V., Li, Q. (2020). Analysis of the Error in the Gas Temperature and the Thermocouple Time Constant Measuring Through Gas Turbine Engine Tests. In: Nechyporuk, M., Pavlikov, V., Kritskiy, D. (eds) Integrated Computer Technologies in Mechanical Engineering. Advances in Intelligent Systems and Computing, vol 1113. Springer, Cham. https://doi.org/10.1007/978-3-030-37618-5_28
Download citation
DOI: https://doi.org/10.1007/978-3-030-37618-5_28
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-37617-8
Online ISBN: 978-3-030-37618-5
eBook Packages: EngineeringEngineering (R0)