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Title: High energy pulsed inductive thruster modeling operating with ammonia propellant

Abstract

Numerical modeling of the pulsed inductive thruster operating with ammonia propellant at high energy levels, utilized a time-dependent, two-dimensional, and axisymmetric magnetohydrodynamics code to provide bilateral validation of experiment and theory and offer performance insights for improved designs. The power circuit model was augmented by a plasma voltage algorithm that accounts for the propellant's time-dependent resistance and inductance to properly account for plasma dynamics and was verified using available analytic solutions of two idealized plasma problems. Comparisons of the predicted current waveforms to experimental data exhibited excellent agreement for the initial half-period, essentially capturing the dominant acceleration phase. Further validation proceeded by comparisons of the impulse for three different energy levels, 2592, 4050, and 4608 J and a wide range of propellant mass values. Predicted impulse captured both trends and magnitudes measured experimentally for nominal operation. Interpretation of the modeling results in conjunction to experimental observations further confirm the critical mass phenomenon beyond which efficiency degrades due to elevated internal energy mode deposition and anomalous operation.

Authors:
;  [1]
  1. Arizona State University, Tempe, Arizona 85287-6106 (United States)
Publication Date:
OSTI Identifier:
21064440
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 102; Journal Issue: 10; Other Information: DOI: 10.1063/1.2809436; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALGORITHMS; AMMONIA; ANALYTICAL SOLUTION; AXIAL SYMMETRY; COMPARATIVE EVALUATIONS; CRITICAL MASS; DEPOSITION; ELECTRIC POTENTIAL; ENERGY LEVELS; INDUCTANCE; MAGNETOHYDRODYNAMICS; NUMERICAL ANALYSIS; PLASMA; PLASMA GUNS; PLASMA SIMULATION; THRUSTERS; TIME DEPENDENCE; TWO-DIMENSIONAL CALCULATIONS; VALIDATION; WAVE FORMS

Citation Formats

Mikellides, Pavlos G., and Villarreal, James K.. High energy pulsed inductive thruster modeling operating with ammonia propellant. United States: N. p., 2007. Web. doi:10.1063/1.2809436.
Mikellides, Pavlos G., & Villarreal, James K.. High energy pulsed inductive thruster modeling operating with ammonia propellant. United States. doi:10.1063/1.2809436.
Mikellides, Pavlos G., and Villarreal, James K.. Thu . "High energy pulsed inductive thruster modeling operating with ammonia propellant". United States. doi:10.1063/1.2809436.
@article{osti_21064440,
title = {High energy pulsed inductive thruster modeling operating with ammonia propellant},
author = {Mikellides, Pavlos G. and Villarreal, James K.},
abstractNote = {Numerical modeling of the pulsed inductive thruster operating with ammonia propellant at high energy levels, utilized a time-dependent, two-dimensional, and axisymmetric magnetohydrodynamics code to provide bilateral validation of experiment and theory and offer performance insights for improved designs. The power circuit model was augmented by a plasma voltage algorithm that accounts for the propellant's time-dependent resistance and inductance to properly account for plasma dynamics and was verified using available analytic solutions of two idealized plasma problems. Comparisons of the predicted current waveforms to experimental data exhibited excellent agreement for the initial half-period, essentially capturing the dominant acceleration phase. Further validation proceeded by comparisons of the impulse for three different energy levels, 2592, 4050, and 4608 J and a wide range of propellant mass values. Predicted impulse captured both trends and magnitudes measured experimentally for nominal operation. Interpretation of the modeling results in conjunction to experimental observations further confirm the critical mass phenomenon beyond which efficiency degrades due to elevated internal energy mode deposition and anomalous operation.},
doi = {10.1063/1.2809436},
journal = {Journal of Applied Physics},
number = 10,
volume = 102,
place = {United States},
year = {Thu Nov 15 00:00:00 EST 2007},
month = {Thu Nov 15 00:00:00 EST 2007}
}