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Heat flux estimation of a plasma rocket helicon source by solution of the inverse heat conduction problem |
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| Authors: | James M Mulcahy David J Browne Kenneth T Stanton Franklin R Chang Diaz Leonard D Cassady Daniel F Berisford Roger D Bengtson |
| Affiliation: | 1. School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Belfield, Dublin 4, Ireland;2. Ad Astra Rocket Company, 141 W. Bay Area Blvd., Webster, Houston, TX 77598, USA;3. University of Texas, Austin, TX 78712, USA;1. Ecole Ponts ParisTech, UR Navier, 6 & 8 Ave Blaise Pascal, 77455 Marne La Vallee, France;2. ArcelorMittal Global Research & Development, Maizière Process Voie Romaine, BP 30320, F-57283 Maizières-lès-Metz Cedex, France;1. Institute of Structural Mechanics, Bauhaus-University Weimar, Marienstraße 15, 99423 Weimar, Germany;2. Department of Mechanical Engineering, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand |
| Abstract: | A solution of the inverse heat conduction problem (IHCP) by the steepest descent method is carried out in order to determine the waste heat flux from a helicon plasma discharge using transient surface temperature measurements obtained from infrared thermography. The infrared camera data is calibrated against thermocouple data and mapped to real locations on the observed surface. The magnitude and distribution of the heat flux to the gas containment tube in the helicon is investigated as the applied power, gas flow rate, magnetic field distribution and neutral gas are varied. |
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