Resistojet thruster with supercapacitor power source – design and experimental research

Kindracki, Jan; Paszkiewicz, Przemysław; Mężyk, Łukasz

doi:10.1016/j.ast.2019.07.010

Cited by 10 publications

(4 citation statements)

References 11 publications

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“…In many power conversion applications, both the load and the source can be modelled as a system operating at a constant power [26][27][28], for example, in emergency lighting systems and DC micro-grids. In other cases, the load can be represented as a constant value resistor [29][30][31]. N. Kularatna et al [29] proposed an instantaneous water heating system for domestic use, based on SCs, where a low voltage storage accumulator is needed, for safety reasons, but with the capacity to deliver the stored energy in a very short time.…”

Section: Main Modes Of Operation Of the Dlscsmentioning

confidence: 99%

Non-Linear Analytical Model for the Study of Double-Layer Supercapacitors in Different Industrial Uses

et al. 2023

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It is generally considered that the representation of a double layer supercapacitor (DLSC) cannot be performed with the usual capacitance and resistance series connected, as it induces a relatively high level of inaccuracy in the results. In multiple previous studies, more advanced models have been developed with very different approaches: models with distributed parameter circuits, based on artificial neural networks (ANNs), fractional order, etc. A non-linear model, less complex than the previous ones and whose behavior adequately represents the DLSCs, is the one formed by a variable capacitance, dependent on its internal voltage. This paper presents a mathematical study to obtain analytical expressions of all the electrical variables of DLSCs, voltage, current, dissipated power and so on, by means of a previous model. This study is carried out considering that the DLSC is charged and discharged through a voltage source and also discharged through a resistor. In later sections, the operational conditions of the DLSC in numerous industrial applications are presented. Finally, a comparative analysis is made between the results produced by the conventional model, with constant capacitance, and the developed model. This analysis is finally followed by the conclusions.

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Section: Main Modes Of Operation Of the Dlscsmentioning

confidence: 99%

Non-Linear Analytical Model for the Study of Double-Layer Supercapacitors in Different Industrial Uses

et al. 2023

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“…Electrothermal thrusters are broadly classified into three groups, that is, resistojets [1], arcjets [2], and radio-frequency (RF) [3] thrusters. In a resistojet thruster, the propellant passes through a heat exchanger in which the temperature of the propellant increases rapidly due to the heat transported by an electric resistive heater component.…”

Section: Introductionmentioning

confidence: 99%

A three-dimensional numerical study on the effect of geometric asymmetry on arcjet thruster performance

Nandyala

Kumar

Jayachandran

2023

Plasma Sci. Technol.

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In an arcjet thruster, the cathode and constrictor degrade with time, and the electrical arc discharge may become unsymmetrical. In this work, a three-dimensional numerical model of hydrogen plasma arcjet is developed and validated to study the effect of unsymmetrical electric arc discharge on thruster performance. The unsymmetrical arc discharge is realized by introducing a radial shift of the cathode so that the cathode tip offset is 80 μm (25 % of the constrictor radius). Simulations are conducted for both axially centered cathode (coaxial) and off-centered cathode (non-coaxial) configurations with identical propellant flow rates and input current. Simulations show asymmetrical arc discharge in non-coaxial cathode configuration, resulting in azimuthally asymmetric Joule heating, species concentrations, and velocity field. This asymmetry continues as the plasma expands in the divergent section of the nozzle. Temperature, species concentrations, and axial velocity exhibit asymmetric radial distribution at the nozzle exit. The computed Joule heating was found to reduce with cathode shift, and consequently, the thrust and specific impulse of the thruster was decreased by about 6.6 %. In the case of the non-coaxial cathode, geometric asymmetry also induces a small side thrust.

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“…Due to significant advantages, electric propulsion has been widely used in scientific and commercial space missions [1][2][3][4]. As one of the most widely used electric propulsions, conventional Kaufman-type ion thruster has successfully carried out many space missions due to its high efficiency and specific impulse [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

The Limitation Analysis of Two Dimensional Magnetic Field Configuration in Annular Ion Thruster

Xia

Wang

et al. 2022

International Journal of Aerospace Engineering

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In this paper, the limitations of two-dimensional magnetic field configuration for an annular ion thruster are analyzed theoretically and numerically. The two-dimensional magnetic field, which is commonly used in traditional ion thrusters, has been proved to be a very effective way for the confinement of primary electrons and ions. Hence, the confinement characteristics of primary electrons and ions in an annular ion thruster with the two-dimensional magnetic field configuration are first analyzed theoretically. Then, according to the analysis, a two-dimensional magnetic field for an annular ion thruster is designed. On this basis, the limitations of the two-dimensional magnetic field configuration are analyzed and discussed by a three-dimensional (3D) Particle-in-cell Monte Carlo collision (PIC-MCC) model. The results show that if the collision process is not considered, a uniform distribution of primary electrons can be achieved theoretically. However, when considering the collision process, the atom forms a significant impedance to the circumferential motion of primary electrons, thus greatly increasing the loss rate of primary electrons. Finally, it is found that, since primary electrons are not guided and constrained in the circumferential direction under the two-dimensional magnetic field, the discharge uniformity cannot be improved only by increasing the magnetic field intensity.

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Resistojet thruster with supercapacitor power source – design and experimental research

Cited by 10 publications

References 11 publications

Non-Linear Analytical Model for the Study of Double-Layer Supercapacitors in Different Industrial Uses

Non-Linear Analytical Model for the Study of Double-Layer Supercapacitors in Different Industrial Uses

A three-dimensional numerical study on the effect of geometric asymmetry on arcjet thruster performance

The Limitation Analysis of Two Dimensional Magnetic Field Configuration in Annular Ion Thruster

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