This paper reports on a series of experiments in the X2 expansion tube at the University of Queensland wherein a biconic model with included angles of 40 and 80° was tested at angles of attack up to 30°. The model was made from Ketron PEEK-1000, which has high infrared emissivity and a thermal effusivity sufficiently low to give a measurable surface temperature rise during the test time. This allows the surface temperature and heat transfer distribution to be determined through infrared thermography after removing corrupting gaseous radiation from the shock layer with optical filtering. Complementary point measurements using a 2.5 MHz liquid nitrogen cooled infrared sensor were used to assess the temporal accuracy of the camera based thermographic technique. The experiments validated the camera based technique within a short duration flow for the conditions of interest, and were shown to give high spatial resolution of the heat transfer distribution.
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