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Proceedings Paper

Inverse determination of heat flux into a gun barrel using temperature sensors
Author(s): Jonathan A. Jablonski; Melissa N. Jablonski
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Paper Abstract

A mathematical model is developed to describe the thermal response of a temperature sensor located within a gun barrel, which accounts for the time-constant of the sensor and a measurement bias. The model is inversely solved to estimate the total heat flux applied to the bore surface as well as the transient history of the applied heat flux for a given thermal response of a temperature sensor. A parametric study is conducted to determine the influence of sensor time-constant, sensor location within the gun barrel, and measurement bias on the accuracy of the estimated heat flux as applied to a 155mm gun barrel. It is found that the accuracy of the estimated heat flux improves as the time-constant of the sensor decreases, the sensor is located closer to the bore surface, and the measurement bias decreases. A regression model is provided to estimate that accuracy and it is shown how a typical thermocouple would perform at various locations through the thickness of the gun barrel.

Paper Details

Date Published: 5 May 2017
PDF: 10 pages
Proc. SPIE 10184, Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security, Defense, and Law Enforcement Applications XVI, 101840Z (5 May 2017); doi: 10.1117/12.2267188
Show Author Affiliations
Jonathan A. Jablonski, U.S. Army Armament Research, Development and Engineering Ctr. (United States)
Melissa N. Jablonski, U.S. Army Armament Research, Development and Engineering Ctr. (United States)


Published in SPIE Proceedings Vol. 10184:
Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security, Defense, and Law Enforcement Applications XVI
Edward M. Carapezza, Editor(s)

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