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Ablation Measurements in a Low-Density Heat Shield Using Ablation Sensor Unit (ASU)

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31st International Symposium on Shock Waves 2 (ISSW 2017)

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Abstract

The detection performance of an ablation sensor, named Ablation Sensor Unit (ASU), which can measure surface recession, thermal decomposition of resin, and temperature of an ablative heat shield material, is demonstrated. A test specimen with embedded ASU is heated using a JAXA 750 kW arcjet wind tunnel facility under one operational condition. The amount of surface recession and char depth and temperature obtained by ASU are compared with the posttest measured values for the recovered test specimen and the surface temperature obtained by a two-color thermometry. The comparison shows that ASU is promising for a simultaneous and an in situ measurement of the ablation phenomena for the ablative heat shield.

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References

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  2. T. Sakai et al., JTHT 31(2), 307–317 (2017)

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  3. Y. Dantsuka et al., JTHT, posted on 16 November (2017)

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  4. K. Fujita, et al., AIAA Paper 2017-0899, (2017)

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Acknowledgments

This research was supported by Japan Society for Promotion of Science as Grant-in-Aid for Challenging Exploratory Research, No. 15K14251. The authors would like to thank Mr. Hirofumi Nakazawa and Mr. Yoichi Takagi for their support during the ablation sensor measurements, Dr. Keiichi Kawata of Aichi Center for Industry and Science Technology for laser processing of ablation rods, Mr. Bernard Otieno Owiti of Tottori University for proofreading of the present manuscript, and the staff of Wind Tunnel Technology Center of Japan Aerospace Exploration Agency (JAXA) for their support during arcjet testing.

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Correspondence to T. Sakai .

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© 2019 Springer Nature Switzerland AG

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Dantsuka, Y., Sakai, T., Iwamoto, K., Ishida, Y., Suzuki, T., Fujita, K. (2019). Ablation Measurements in a Low-Density Heat Shield Using Ablation Sensor Unit (ASU). In: Sasoh, A., Aoki, T., Katayama, M. (eds) 31st International Symposium on Shock Waves 2. ISSW 2017. Springer, Cham. https://doi.org/10.1007/978-3-319-91017-8_36

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  • DOI: https://doi.org/10.1007/978-3-319-91017-8_36

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-91016-1

  • Online ISBN: 978-3-319-91017-8

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