Investigation of the Magnetic Field in a Pulsed Plasma Thruster

Nawaz, Anuscheh; Lau, Matthias; Herdrich, Georg; Auweter‐Kurtz, Monika

doi:10.2514/1.37161

Cited by 25 publications

(17 citation statements)

References 3 publications

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“…The vacuum test facility 17 at IRS has been used for all tests. It has been described in other publications [6] which the reader is kindly referred to. To speed up the measurement process and to reduce the number of vacuum tests, the axis table at IRS was upgraded with a remote controlled z-axis for full 3D-motion capability.…”

Section: Methodsmentioning

confidence: 98%

“…Preliminary work with inductive magnetic field probes had shown very promising results in acquiring spatial and time resolved information of the magnetic field distribution between the thruster electrodes [6]. It was concluded, to use this approach to investigate the theory of a moving current sheet inside of ADD SIMP-LEX, by means of measuring the magnetic vector field and deriving the respective current density vector field.…”

Section: Discharge Modelmentioning

confidence: 98%

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Plasma diagnostic with inductive probes in the discharge channel of a pulsed plasma thruster

Lau

Herdrich

2014

Vacuum

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Section: Methodsmentioning

confidence: 98%

Section: Discharge Modelmentioning

confidence: 98%

Plasma diagnostic with inductive probes in the discharge channel of a pulsed plasma thruster

Lau

Herdrich

2014

Vacuum

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“…The electric displacement field was taken into account, but it was found to have no influence on the absolute current density values with orders of 10 −12 A/m 2 which is in good agreement with the findings of Nawaz. 8 Neglecting the displacement current, the Eq. (2) then takes the form:…”

Section: The Induction Probementioning

confidence: 99%

Experimental Investigation of the Current Density in the Discharge Plasma of ADD SIMP-LEX

Lau¹,

Manna²,

Herdrich³

et al. 2012

48th AIAA/ASME/SAE/ASEE Joint Propulsion Conference &Amp;amp; Exhibit

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The Pulsed Plasma Thruster, specifically the ablative iMPD ADD SIMP-LEX of the Institute of Space Systems in Stuttgart, represents a promising and cheap solution to todays propulsion challenges in space. The work presented in this paper covers new information on the electromagnetic conditions during thrust generation by revealing the temporal and spatial distribution of the vectorial current density between the thruster electrodes. At IRS this is achieved by utilizing self-made and calibrated miniaturized induction probes. The local magnetic field components of all three spatial directions are combined to derive the current density vector. Quantitative determination of the temporal behavior of vectors at 27 points evenly distributed in three planes delivers for the first time a comprehensive picture of the position and development of the current sheet in a PPT. Maximum current densities of 80 kA/m 2 and magnetic flux densities of up to 0.82 T have been observed close to the surface of the solid Teflon T M -propellant. It should be noted, that in contrast to the slug model by Jahn no distinct movement of the current sheet was observed. The current density data is discussed and compared to high-speed camera pictures taken at IRS.

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“…The thruster's self-induced magnetic field B has been investigated by means of intrusive induction probes 3,7) . An induction probe delivers a voltage signal according to the Faraday law when exposed to a time varying magnetic field.…”

Section: Magnetic Field Measurementsmentioning

confidence: 99%

“…The analysis method is basing on the fact that a number of finite current filaments is assumed each carrying a fraction of the total current, and the magnetic field induced is calculated normalized by the current [5][6][7] . Integrating over the space between the electrodes eventually leads to the change in inductance as a function of the plasma position, necessary for the modeling of the thruster's performance.…”

Section: Calculation Of Magnetic Field and Change In Inductancementioning

confidence: 99%

Review of Pulsed Plasma Thruster Development at IRS

Schönherr

Nawaz

Lau

et al. 2010

AEROSPACE TECHNOLOGY JAPAN

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The research and development process of the ablative pulsed plasma thruster SIMP-LEX is summarized. By experiment, the magnetic field in between the electrodes was measured with an induction probe, and a high-speed camera was applied to estimate the propagation of the plasma plume. Further, the optimization process towards higher thrust efficiency by means of geometric and electrical modifications is described. By analysis, the calculation of magnetic field and change in inductance is summarized and the numerical models for the performance simulation of SIMP-LEX introduced. A peak value of 0.7 T was found for the magnetic field created during an 80 J discharge whereas a propagation velocity of 28 km/s was estimated for the first plasma plume. The optimization process towards a new engineering model yielded an increase of 40% in mean exhaust velocity to 26 km/s, and a maximum thrust efficiency of 32% was evaluated respectively. Calculation of magnetic field and change in inductance based on the Biot-Savart law yield input for the slug model, which can then predict the general performance parameters with a good accordance.

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Investigation of the Magnetic Field in a Pulsed Plasma Thruster

Cited by 25 publications

References 3 publications

Plasma diagnostic with inductive probes in the discharge channel of a pulsed plasma thruster

Plasma diagnostic with inductive probes in the discharge channel of a pulsed plasma thruster

Experimental Investigation of the Current Density in the Discharge Plasma of ADD SIMP-LEX

Review of Pulsed Plasma Thruster Development at IRS

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