Heat transfer measurements on the first experimental layer of the FIRE II reentry vehicle in expansion tubes

Capra, Bianca R., Morgan, Richard G., & Leyland, Penelope (2005) Heat transfer measurements on the first experimental layer of the FIRE II reentry vehicle in expansion tubes. In Danesy, D. (Ed.) Proceedings of the 5th European Symposium on Aerothermodynamics for Space Vehicles, European Space Agency, Cologne, Germany.

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The present study focused on simulating a trajectory point towards the end of the first experimental heatshield of the FIRE II vehicle, at a total flight time of 1639.53s. Scale replicas were sized according to binary scaling and instrumented with thermocouples for testing in the X1 expansion tube, located at The University of Queensland. Correlation of flight to experimental data was achieved through the separation, and independent treatment of the heat modes. Preliminary investigation indicates that the absolute value of radiant surface flux is conserved between two binary scaled models, whereas convective heat transfer increases with the length scale. This difference in the scaling techniques result in the overall contribution of radiative heat transfer diminishing to less than 1% in expansion tubes from a flight value of approximately 9-17%. From empirical correlation's it has been shown that the St √Re number decreases, under special circumstances, in expansion tubes by the percentage radiation present on the flight vehicle. Results obtained in this study give a strong indication that the relative radiative heat transfer contribution in the expansion tube tests is less than that in flight, supporting the analysis that the absolute value remains constant with binary scaling.

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ID Code: 70326
Item Type: Conference Paper
Refereed: No
ISBN: 9290928743
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2005 European Space Agency
Deposited On: 22 Apr 2014 02:15
Last Modified: 17 Nov 2014 22:49

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