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Electrostatic Particle-in-Cell simulations of a downscaled High Efficiency Multistage Plasma Thru... more Electrostatic Particle-in-Cell simulations of a downscaled High Efficiency Multistage Plasma Thruster (HEMPT). The purpose of downscaling the HEMPT design is to reach the requirements of missions which have a need for unprecedented low thrust and low noise. The aim of the here presented numerical simulations is to get an improved understanding of the thruster’s physics especially in its downscaled configuration, in order to reach the design goals.
First results of computer modeling the characteristics of a downscaled High Effciency Multistage ... more First results of computer modeling the characteristics of a downscaled High Effciency Multistage Plasma Thruster (HEMPT) are presented. The aim of the micro- HEMPT development is to meet the requirements in very precise attitude control for upcoming formation flight satellites and probes. Computer modeling can help reach the performance goals and save experimental time. In this presentation, a Particle-in-Cell code based simulation is used to investigate a section of the thrusters discharge chamber and how its plasma characteristics react to the change of an input parameter.
We present a computer model of a downscaled High Efficiency Multistage Plasma Thruster (HEMPT). T... more We present a computer model of a downscaled High Efficiency Multistage Plasma Thruster (HEMPT). The purpose of downscaling the HEMPT design is to reach the requirements of missions which have a need for low thrust (0.1...150µN) and low noise (root of the noise spectral density ≤ 0.1µN/ √ Hz). These are upcoming formation flying space missions like eLISA (evolved Laser Interferometer Space Antenna) or NGGM (Next Generation Gravity Mission). The aim of the here presented numerical simulations is to get an improved understanding of the thrusters physics especially in its downscaled configuration, in order to reach the design goals.
The European Physical Journal D, 2015
In this work concepts for numerical simulation with the aim of improved un- derstanding of a mini... more In this work concepts for numerical simulation with the aim of improved un- derstanding of a miniaturized HEMP (High Eficiency Multistage Plasma) Thruster are pre- sented. A downscaled HEMP-Thruster is developed at Astrium GmbH at Friedrichshafen in cooperation with the Center of Applied Space Technology and Microgravity (ZARM) and the German Aerospace Center (DLR). The aim is to reach the low thrust level and noise of the requirement for LISA (Light Interferometer Space Antenna) and similar for- mation flight space missions. With a complete model of the thruster and its environment, it should be possible to optimize characteristics like thrust beam divergence, thrust weight ratio and power consumption, as well as to determine if and how the LISA requirements can be met. Both an analytical and a particle model for calculating the electron confinement in the complex magnetic field topology are presented. A simplified fluid model gives first estimations of plasma density and electron ...
Upcoming formation flying space missions like NGO or next Next Generation Gravity Missions requir... more Upcoming formation flying space missions like NGO or next Next Generation Gravity Missions require highly precise attitude control. This leads to never before seen demands in low thrust (0.1µN...150µN) and noise ( <0.1µN/SQRT(Hz) ) of the thruster actors in the control loop. One effort to reach those requirements is downscaling the High Efficiency Multistage Plasma Thruster (HEMPT) design. The aim of the computer modeling part is to get an improved understanding of the thrusters behavior especially in its downscaled configuration. This will help reaching the design goals. First results of a computer model of a downscaled HEMPT will be presented here.
Astroparticle, Particle, Space Physics and Detectors for Physics Applications, 2014
Electrostatic Particle-in-Cell simulations of a downscaled High Efficiency Multistage Plasma Thru... more Electrostatic Particle-in-Cell simulations of a downscaled High Efficiency Multistage Plasma Thruster (HEMPT). The purpose of downscaling the HEMPT design is to reach the requirements of missions which have a need for unprecedented low thrust and low noise. The aim of the here presented numerical simulations is to get an improved understanding of the thruster’s physics especially in its downscaled configuration, in order to reach the design goals.
First results of computer modeling the characteristics of a downscaled High Effciency Multistage ... more First results of computer modeling the characteristics of a downscaled High Effciency Multistage Plasma Thruster (HEMPT) are presented. The aim of the micro- HEMPT development is to meet the requirements in very precise attitude control for upcoming formation flight satellites and probes. Computer modeling can help reach the performance goals and save experimental time. In this presentation, a Particle-in-Cell code based simulation is used to investigate a section of the thrusters discharge chamber and how its plasma characteristics react to the change of an input parameter.
We present a computer model of a downscaled High Efficiency Multistage Plasma Thruster (HEMPT). T... more We present a computer model of a downscaled High Efficiency Multistage Plasma Thruster (HEMPT). The purpose of downscaling the HEMPT design is to reach the requirements of missions which have a need for low thrust (0.1...150µN) and low noise (root of the noise spectral density ≤ 0.1µN/ √ Hz). These are upcoming formation flying space missions like eLISA (evolved Laser Interferometer Space Antenna) or NGGM (Next Generation Gravity Mission). The aim of the here presented numerical simulations is to get an improved understanding of the thrusters physics especially in its downscaled configuration, in order to reach the design goals.
The European Physical Journal D, 2015
In this work concepts for numerical simulation with the aim of improved un- derstanding of a mini... more In this work concepts for numerical simulation with the aim of improved un- derstanding of a miniaturized HEMP (High Eficiency Multistage Plasma) Thruster are pre- sented. A downscaled HEMP-Thruster is developed at Astrium GmbH at Friedrichshafen in cooperation with the Center of Applied Space Technology and Microgravity (ZARM) and the German Aerospace Center (DLR). The aim is to reach the low thrust level and noise of the requirement for LISA (Light Interferometer Space Antenna) and similar for- mation flight space missions. With a complete model of the thruster and its environment, it should be possible to optimize characteristics like thrust beam divergence, thrust weight ratio and power consumption, as well as to determine if and how the LISA requirements can be met. Both an analytical and a particle model for calculating the electron confinement in the complex magnetic field topology are presented. A simplified fluid model gives first estimations of plasma density and electron ...
Upcoming formation flying space missions like NGO or next Next Generation Gravity Missions requir... more Upcoming formation flying space missions like NGO or next Next Generation Gravity Missions require highly precise attitude control. This leads to never before seen demands in low thrust (0.1µN...150µN) and noise ( <0.1µN/SQRT(Hz) ) of the thruster actors in the control loop. One effort to reach those requirements is downscaling the High Efficiency Multistage Plasma Thruster (HEMPT) design. The aim of the computer modeling part is to get an improved understanding of the thrusters behavior especially in its downscaled configuration. This will help reaching the design goals. First results of a computer model of a downscaled HEMPT will be presented here.
Astroparticle, Particle, Space Physics and Detectors for Physics Applications, 2014