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Electrostatic Levitation on Atmosphere-Less Planetary Bodies with Ionic-Liquid Ion Sources
Name
electrostatic_levitation.pdf
Size
1.45 MB
Format
Adobe PDF
Checksum (MD5)
14c47b9d0e86cb231de0b2178da70e4b
Author(s)
Jia-Richards, Oliver
Hampl, Sebastian K.
Lozano, Paulo C.
Date Issued
November 2021
Journal
Journal of Spacecraft and Rockets
Publisher
American Institute of Aeronautics and Astronautics (AIAA)
Citation
Jia-Richards, Oliver, Hampl, Sebastian K. and Lozano, Paulo C. 2021. "Electrostatic Levitation on Atmosphere-Less Planetary Bodies with Ionic-Liquid Ion Sources." Journal of Spacecraft and Rockets, 58 (6).
Version
Author's final manuscript
Abstract
This paper presents an initial feasibility study on the use of ionic-liquid ion sources for electrostatic actuation on atmosphere-less planetary bodies. The natural surface charging of atmosphere-less planetary bodies has been studied as the cause of the transport of regolith across the surface and for electrostatic levitation of a spacecraft in proximity to small asteroids. The low magnitude of the natural surface electric field (order 10 V/m) severely limits the capability of a vehicle to leverage electrostatic levitation as its maneuvering strategy, particularly on large planetary bodies, such as the Moon. Ionic-liquid ion sources are considered as an actuator for charging of both the vehicle as well as the local surface of the planetary body. By irradiating the surface with ions, the surface electric field can be increased far beyond its natural value and could enable electrostatic levitation on planetary bodies as large as the Moon with current technology. A low-fidelity analytical model of the charging process is developed to estimate requirements on the local surface charge density and limitations on the levitation height and translational speed of the vehicle. Experiments are conducted in a laboratory environment to demonstrate the feasibility of using ionic-liquid ion sources for combined vehicle and surface charging by creating a 1 mN electrostatic force through charge transport while requiring only 0.2 mW of input power. These experiments are in reasonable agreement with the low-fidelity model that describes the fundamental physics of this concept.
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
10.2514/1.a35001
