Novel Apparatus for Studying Low Gravity Particle Dynamics in Multiphase Flow

Dust is a major concern for NASA Lunar and Martian missions due to its abrasive nature and tendency to cover equipment. However, little is known about how dust behaves in low gravity environments. In this presentation we discuss the development of an apparatus that will simulate low gravity by placing electrostatically charged monosized particles in an upward electric field. This upward electric field creates an upward Coulomb forces that results in a simulated low gravity. Achieving a maximum surface charge on the particle stream is key to ensuring that all particles experience the same upward Coulomb forces and thus all particles simulate the same gravity. This presentation discusses the methodology, tests, and results of charging a particle stream using corona discharge and measuring the Coulomb forces that the charge particle stream experiences when placed in an electric field with a known strength. Future work will expand the platform to simulate low gravity in turbulent conditions.