Journal of Astronomy and Space Sciences

The Korean Space Science Society (한국우주과학회)
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Uncertainty Quantification of Thermophysical Property Measurement in Space and on Earth: A Study of Liquid Platinum Using Electrostatic Levitation

  • Jannatun Nawer (Department of Mechanical Engineering, Tufts University) ;
  • Takehiko Ishikawa (Institute of Space and Astronautical Science, JAXA) ;
  • Hirohisa Oda (Human Spaceflight Technology, JAXA) ;
  • Chihiro Koyama (Human Spaceflight Technology, JAXA) ;
  • Douglas M. Matson (Department of Mechanical Engineering, Tufts University)
  • Received : 2023.03.22
  • Accepted : 2023.06.29
  • Published : 2023.09.15
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Abstract

A study of uncertainty analysis was conducted on four key thermophysical properties of molten Platinum using a noncontacting levitation technique. More specifically, this work demonstrates a detailed reporting of the uncertainties associated with the density, volumetric thermal expansion coefficient, surface tension and viscosity measurements at higher temperatures for a widely used refractory metal, Platinum using electrostatic levitation (ESL). The microgravity experiments were conducted using JAXA's Electrostatic Levitation Furnace (ELF) facility on the International Space Station and the terrestrial experiments were conducted using NASA's Marshal Space Flight Center's ESL facility. The performance of these two facilities were then quantified based on the measurement precision and accuracy using the metrological International Standards Organization's Guide to the Expression of Uncertainty Measurement (GUM) principles.

Keywords

Acknowledgement

This work has been funded by NASA under the grants NNX17AH41G, 80NSSC23K0573 and 80NSSC19K0256. The authors would like to acknowledge the support of Michael P. SanSoucie, Brandon Philips, Glenn Fountain, and Trudy Allen from the NASA MSFC ESL facility and JAXA Tsukuba Space Centre team members through access to the ISSELF facility. The authors also acknowledge collaborative support of Matthias Kolbe from Institut für Materialphysik im Weltraum, DLR for surface analysis.

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