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Improvement of the satellite thruster performances using supercapacitors power supply system

Łukasz Mężyk

Abstract

One of the crucial systems in many satellite missions is the precise positioning and attitude control system. Since it is directly connected with mass reduction, reliability and production costs, the simplicity of this system has become the most important feature. The efficiency of such a system is also very important. It enables propellant consumption to be reduced, which offers some additional mass budget benefits for the equipment and extends the lifespan of the satellite. The simplest orientation systems are based on cold gas thrusters. While their simple design and principle of work ensure high reliability, they cannot deliver very high performance. To increase the performance, especially the specific impulse, they can be replaced in many cases by resistojet propulsion systems. Although the resistojet has been a well-known thruster since the beginning of satellite technology, its capabilities are limited by some technical issues, such as: heat transfer limitations, thermal losses, high power consumptions and many others. This work describes the research and development of a new type of resistojet thruster. The main innovation is the use of a dedicated power supply unit where the energy is stored in bank of supercapacitors. This solution has enabled the obtaining of high peak power consumption with very limited mean power consumption from the satellite power system. Due to the novel, very light design of the heater, recuperation of the heat and periodic mode of operation, the resistojet does not need heavy insulation. This work presents the whole development process, including its early stages, based on different ideas. Results of the research for each version are presented and analyzed. The mathematical model and new simulation tool - the software ResistojetSC is described. The development of the power supply unit based on bank of supercapacitors is also presented. This work was conducted as part of the project: “Gas Resistojet Thruster for Medium Size Satellite Attitude Control” supported by the European Space Agency within the framework of the PECS agreement.
Record ID
WUT8e15be4e190a4b2692cfd7a5ea949d21
Diploma type
Doctor of Philosophy
Author
Title in English
Improvement of the satellite thruster performances using supercapacitors power supply system
Language
(en) English
Certifying Unit
Faculty of Power and Aeronautical Engineering (FPAE)
Discipline
mechanical engineering / (technology domain) / (technological sciences)
Status
Finished
Defense Date
22-12-2014
Title date
27-01-2015
Supervisor
Internal reviewers
External reviewers
Witold Wiśniowski Witold Wiśniowski,, External affiliation of publication: Institute of Aviation
Pages
166
Keywords in English
xxx
Abstract in English
One of the crucial systems in many satellite missions is the precise positioning and attitude control system. Since it is directly connected with mass reduction, reliability and production costs, the simplicity of this system has become the most important feature. The efficiency of such a system is also very important. It enables propellant consumption to be reduced, which offers some additional mass budget benefits for the equipment and extends the lifespan of the satellite. The simplest orientation systems are based on cold gas thrusters. While their simple design and principle of work ensure high reliability, they cannot deliver very high performance. To increase the performance, especially the specific impulse, they can be replaced in many cases by resistojet propulsion systems. Although the resistojet has been a well-known thruster since the beginning of satellite technology, its capabilities are limited by some technical issues, such as: heat transfer limitations, thermal losses, high power consumptions and many others. This work describes the research and development of a new type of resistojet thruster. The main innovation is the use of a dedicated power supply unit where the energy is stored in bank of supercapacitors. This solution has enabled the obtaining of high peak power consumption with very limited mean power consumption from the satellite power system. Due to the novel, very light design of the heater, recuperation of the heat and periodic mode of operation, the resistojet does not need heavy insulation. This work presents the whole development process, including its early stages, based on different ideas. Results of the research for each version are presented and analyzed. The mathematical model and new simulation tool - the software ResistojetSC is described. The development of the power supply unit based on bank of supercapacitors is also presented. This work was conducted as part of the project: “Gas Resistojet Thruster for Medium Size Satellite Attitude Control” supported by the European Space Agency within the framework of the PECS agreement.
Thesis file
  • File: 1
    Mezyk.pdf
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Citation count
2

Uniform Resource Identifier
https://repo.pw.edu.pl/info/phd/WUT8e15be4e190a4b2692cfd7a5ea949d21/
URN
urn:pw-repo:WUT8e15be4e190a4b2692cfd7a5ea949d21

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