Inverse determination of heat flux into a gun barrel using temperature sensors

Jonathan A. Jablonski; Melissa N. Jablonski

doi:10.1117/12.2267188

5 May 2017 Inverse determination of heat flux into a gun barrel using temperature sensors

Jonathan A. Jablonski, Melissa N. Jablonski

Proceedings Volume 10184, Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security, Defense, and Law Enforcement Applications XVI; 101840Z (2017) https://doi.org/10.1117/12.2267188
Event: SPIE Defense + Security, 2017, Anaheim, CA, United States

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.

Citation Download Citation

Jonathan A. Jablonski and Melissa N. Jablonski "Inverse determination of heat flux into a gun barrel using temperature sensors", 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); https://doi.org/10.1117/12.2267188

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