NDLI: Modeling of Microdischarges for Use in Microthrusters

Content Provider	IEEE Xplore Digital Library
Author	Arakoni, R.A. Ewing, J.J. Kushner, M.J.
Copyright Year	2005
Description	Author affiliation: Dept. of Aerosp. Eng., Illinois Univ., Urbana, IL (Arakoni, R.A.)
Abstract	Summary form only given. Microdischarges having characteristic dimensions of 100s of mum at pressures of 10s to 100s of torr are being investigated for use as sources of thrust for small satellites. These devices are capable of generating up to mN of thrust using non-contaminating propellants such as rare gases or hydrogen. The class of device of interest includes cylindrical multistage discharges with or without nozzles. The dominant mode of propulsion is by imparting thermal energy to the neutral gas by the discharge. Innovative designs may also take advantage of transfer of momentum from ions to the neutral gas. In this talk, this class of microdischarge will be computationally investigated using a 2-dimensional plasma hydrodynamics model having an unstructured mesh to resolve non-equilibrium electron, ion and neutral transport using fluid equations. Sheath accelerated, beam-like electrons are addressed using a Monte Carlo simulation. A compressible Navier-Stokes module provides the bulk fluid velocities and temperatures. Changes in surface properties are addressed with a surface site-balance model. Results from a parametric investigation of pressure (a few 10s to 100s of torr) and geometry will be discussed for rare gas mixtures with the goal of maximizing the velocity of the exhaust at the exit plane. Velocities of up to 100s m/s have been predicted in the throats of the devices with plasma densities of $10^{13}-10^{14}$ $cm^{-3}$ at pressures of 50 torr with a back pressure of 30 torr
Sponsorship	Plasma Sci. Appl. Comm. IEEE Nucl. Plasma Sci. Soc.
Starting Page	175
Ending Page	175
File Size	1200305
Page Count	1
File Format	PDF
ISBN	0780393007
ISSN	07309244
DOI	10.1109/PLASMA.2005.359187
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Plasma temperature Satellites Propellants Gases Hydrogen Fault location Propulsion Plasma accelerators Plasma properties Plasma sheaths
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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