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NASA NTRS · 20180004117

Electrostatic Precipitation for Cleaning Mars Atmospheric ISRU Intakes

Johansen, M. R.·Phillips, J. R.·Wang, J. J.·Mulligan, J.·Watson, B. A.·Lane, John E.·Mantovani, James G.·Mackey, Paul J.·Calle, Carlos I.
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Abstract

Future Mars ISRU atmospheric intakes are estimated to ingest several hundred grams of dust over their lifetime. The Electrostatics and Surface Physics Laboratory at NASA's Kennedy Space Center is developing a dust removal system based on a mature terrestrial technology - electrostatic precipitation. In this technology, a high voltage and grounded collection electrode create a corona discharge which charges particles in a dust-laden flow. The resulting electric field between the high voltage and collection electrodes drive the charged particles toward the collection electrode. This paper presents the design of the electrostatic precipitator and preliminary results.

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Johansen, M. R., Phillips, J. R., Wang, J. J., Mulligan, J., Watson, B. A., Lane, John E., Mantovani, James G., Mackey, Paul J., Calle, Carlos I.. 2018-06-12. Electrostatic Precipitation for Cleaning Mars Atmospheric ISRU Intakes. https://ntrs.nasa.gov/citations/20180004117

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NASA NTRS2018

Design of a Second Generation Electrostatic Precipitator for Martian Atmospheric Dust Mitigation of ISRU Intakes

A second generation electrostatic precipitator for use in the Martian environment has been developed by the Electrostatics and Surface Physics Laboratory (ESPL) at NASA Kennedy Space Center (KSC). This new system was designed to be modular and has three interchangeable test sections, each with a variety of replaceable high voltage electrodes, enabling optimization of the dust collection efficiency of the precipitator. It has the ability to maintain an increased atmospheric flow rate and provide more accurate dust delivery into the test section than was available in the previous prototypes. A majority of the controls for the system are provided by a software package developed to maintain a constant flow rate, low pressure, and electrode current to enable long duration performance characterization. This allows for testing of the technology in a relevant environment similar to those expected to be found in an atmospheric In-Situ Resource Utilization (ISRU) plant on Mars.

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