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Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
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Magnetic field coupling with lunar soil simulants.

Shanti M Garman1, Melissa C Roth2, Vincent G Roux2

  • 1Department of Electrical and Computer Engineering, University of Washington, Seattle, 98195, USA. shantig@uw.edu.

Scientific Reports
|June 15, 2023
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Wireless power transfer (WPT) for lunar vehicles is affected by iron in lunar regolith. Metallic iron

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Area of Science:

  • Space Science and Engineering
  • Electromagnetics
  • Materials Science

Background:

  • Wireless power transfer (WPT) is crucial for lunar surface vehicles.
  • Lunar regolith contains iron, affecting electromagnetic interactions.
  • Standard lunar simulants often lack metallic iron, limiting research.

Purpose of the Study:

  • To investigate the impact of metallic iron and particle size on WPT in lunar simulants.
  • To assess electromagnetic field coupling with iron-enriched lunar soil.
  • To provide data for optimizing WPT systems for the lunar environment.

Main Methods:

  • Experimental testing of WPT with magnetically coupled resonators.
  • Utilizing standard lunar simulants, an iron-enriched simulant, and metallic iron powders.
  • Measuring power transfer efficiency, thermal response, and frequency response.

Main Results:

  • Metallic iron and its particle size significantly influence magnetic field coupling with lunar simulants.
  • The particle size-to-skin depth ratio is a critical factor.
  • Attenuation constants for iron powders were estimated and compared to regolith and simulants.

Conclusions:

  • The presence and characteristics of metallic iron in lunar soil are vital for WPT performance.
  • Accurate modeling of WPT requires considering iron content and particle size.
  • Future lunar WPT systems must account for these regolith properties.