Estimation of Free Space Capacitance and Body Potential of a Spacecraft for Charging Analysis

Karthikeyan, B.; Hariharan, V. K.; Sanyal, Subrata

doi:10.1109/tps.2013.2271280

Cited by 14 publications

(27 citation statements)

References 9 publications

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“…Equation is numerically integrated for the following two conditions. Excluding current densities of SEY‐BEY …”

Section: Problem Formulationsmentioning

confidence: 99%

“…Details of absolute and coupled body capacitance formed in a spacecraft have not been revealed in any of these tools. In recent past, capacitance of several metallic structures of a spacecraft and entire spacecraft modeled as a rectangular cuboid and two plates with antennas have been computed in the previous studies . However, absolute capacitance of a metallic pyramid, a module required to build a spacecraft model, is not available in the literature.…”

Section: Introductionmentioning

confidence: 99%

“…However, absolute capacitance of a metallic pyramid, a module required to build a spacecraft model, is not available in the literature. Temporal variation of body potential of the spacecraft immersed in the single Maxwellian plasma parameters is presented without considering dominant currents because of SEY‐BEY previously in other works . This estimation also excludes the impact of the recommended cases of plasma environment in absolute charging.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, free space capacitance of a pyramid with cuboid and an isolated pyramid is computed by the Method of Moments (MoM). Absolute charging of the above‐mentioned structures is estimated in the presence of SEY‐BEY in order to investigate their formidable inference beyond the work presented in recent past . Impact on steady‐state potential is analyzed for two characteristics of particles, ie, (a) incident energy up to 50 keV and (b) angle of incidence in terms of isotropic and normal incidence.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Impact of secondary and backscattered electron currents on absolute charging of structures used in spacecraft

Pandya

Mehta

Kothari

2019

Int J Numerical Modelling

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This article analyzes absolute charging of a metallic pyramid in single Maxwellian normal and worst cases of plasma environment. Capacitance of a pyramid for estimation of body potential is computed by the Method of Moments. Body potential temporal variation is obtained by numerically integrating the differential equation using the fourth order Runge‐Kutta method. Owing to a well‐known fact that diverse secondary and backscattered electron yields for different materials is the prime reason for most destructive differential charging, this work includes impact of normal and isotropic incidence of particles for a metal surface of aluminum. The decisive inferences related to these properties together with temporal variation of body potential are compared. Our computational results reveal a significant difference in the estimation of absolute charging in comparison with the same reported earlier.

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“…Equation is numerically integrated for the following two conditions. Excluding current densities of SEY‐BEY …”

Section: Problem Formulationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of secondary and backscattered electron currents on absolute charging of structures used in spacecraft

Pandya

Mehta

Kothari

2019

Int J Numerical Modelling

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“…The computation is carried out based on the preceding formulation. [6] x 2 5 C I ==�> 5 4 3 6 Fig. 2 Mapping of a curvilinear triangle into a reference triangle with nodes [2] Jose et al demonstrated the validity of the finite elements to calculate the capacitance of a cylindrical capacitor.…”

Section: General Analysismentioning

confidence: 99%

Efficient capacitance computation for computational electromagnetics

Dhamodaran¹,

Dhanasekaran²

2014

2014 International Conference on Communication and Signal Processing

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The capacitance evaluation of conducting bodies is an importance step for prediction of electrostatic discharge problem. In this paper an attempt has been made for the evaluation of charge distribution and the capacitance of conducting surface. There are different methods such as method of moment (MOM), Finite element method (FEM), Finite difference method (FDM), Charge Simulation method (CSM), point matching method and Surface charge method. In this paper the MOM based on the pulse basis function and point matching is used. The integrand is divided into a regular and a singular part. The MOM is based upon the transformation of an integral equation, into a matrix equation by employing expansion of the unknown in terms of known basis functions with unknown coefficients such as charge distribution and hence the capacitance is to be determined. This paper reviews the results of computing the capacitance-per-unit length of square plates. Index Terms-Capacitance, electrostatic discharge, point matching, rectangular subdomain, method of moments, finite element method.

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A comparative study of body potential transient profile of geosynchronous orbit spacecraft in single and double Maxwellian plasma models

Pandya

Kothari

Alad

2021

Int J Numerical Modelling

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Estimation of the transient profile of body potential of spacecraft in recommended cases of plasma models is crucial because of its importance to estimate electrostatic discharge (ESD) events. The spacecraft structure consisting of a cuboid with two coplanar rectangular plates is modeled as a lumped equivalent capacitance circuit. Method of moments is used to compute absolute and coupled capacitances, which directly affect the transient profile of body potential. Additionally, closer to the actual plasma model representing substorm injection events is vital for reliable estimation of absolute charging. Accordingly, in this work, we attempt a comprehensive analysis of the charging of a spacecraft in Maxwellian plasma models with the inclusion of induced electron yields for the probable particle incidences. Subsequently, the critical range of particle energy susceptible to failures related to ESD is investigated for a spacecraft structure of Aluminum. The comparison of transient variations of body potential in single and double Maxwellian plasma environments identifies the critical aspects of normal and worst cases concerning the prediction of ESD events, which can be useful in the early stage of a spacecraft design.

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Estimation of Free Space Capacitance and Body Potential of a Spacecraft for Charging Analysis

Cited by 14 publications

References 9 publications

Impact of secondary and backscattered electron currents on absolute charging of structures used in spacecraft

Impact of secondary and backscattered electron currents on absolute charging of structures used in spacecraft

Efficient capacitance computation for computational electromagnetics

A comparative study of body potential transient profile of geosynchronous orbit spacecraft in single and double Maxwellian plasma models

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