Technique development for investigating axisymmetric ablation models in hypersonic impulse facilities
Contribution to Journal
Iyinomen, Daniel Odion, Malpress, Ray and Buttsworth, David. 2021. "Technique development for investigating axisymmetric ablation models in hypersonic impulse facilities." AIAA Journal. 59 (2), pp. 447-461. https://doi.org/10.2514/1.J059629
Article Title | Technique development for investigating axisymmetric ablation models in hypersonic impulse facilities |
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Authors | Iyinomen, Daniel Odion, Malpress, Ray and Buttsworth, David |
Journal Title | AIAA Journal |
Journal Citation | 59 (2), pp. 447-461 |
Number of Pages | 447-461 |
Year | 2021 |
Digital Object Identifier (DOI) | https://doi.org/10.2514/1.J059629 |
Abstract | Arcjet facilities have been the norm for ablation experiments to date. However, the arcjet has a few major limitations and challenges: to name a few, nonuniform enthalpy distribution, nonequilibrium state, change of surface quality during testing, and the extent of oxidation. This research work has presented a new, original, and novel plasma technique for preheating axisymmetric samples of heat-shield materials in hypersonic impulse facilities. An attempt to engage the heating technique with the tunnel at the University of Southern Queensland’s Ludwieg tube facility was a very good choice from the viewpoint of technical development. A 50-mm-diameter graphite disk sample with a uniform thickness of 2 mm was heated from the downstream side with plasma to approximately 2500 K, and then it was exposed to a cold Mach 4.5 flow. The disk was mounted on an experimental probe that was very similar to the European standard probe, normal to the flow. This present work remains one of the most expected solutions, which can replicate a high surface temperature identical to real-flight vehicles. Future applications for the technique are expected to be found in expansion tube facilities that can simulate the true flow energy under reentry conditions. © 2020 by the Daniel Odion Iyinomen. Published by the American Institute of Aeronautics and Astronautics, Inc. |
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