Joel Sercel | California Institute of Technology (original) (raw)
Aerospace engineer and entrepreneur.
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24th Joint Propulsion Conference, Jul 11, 1988
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NASA Tech Briefs, Jul 1, 1992
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A major purpose of the Technical Information Center is to provide the broadest dissemination poss... more A major purpose of the Technical Information Center is to provide the broadest dissemination possible of information contained in DOE'S Research and Development Reports to business, industry, the academic community, and federal, state and local governments. Although portions of this report are not reproducib!e,
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The Electron Cyclotron Resonance (ECR) thruster is a proposed electrodeless space electric propul... more The Electron Cyclotron Resonance (ECR) thruster is a proposed electrodeless space electric propulsion device with interesting and little understood physics. A laboratory ECR thruster was run in a vacuum tank at pressures in the 10 exp -5 torr range using 2.12 GHz microwave beam and Ar gas propellant. Movable diagnostic probes (a Faraday cup and a gridded energy analyzer) measured plasma characteristics as propellant gas flow rate and input microwave power level were varied. Ion energy and flux data were used to calculate I(sp), propulsive efficiency, and thrust. The ion flux profiles show an unexpected depression on the thruster axis for low tank pressures that disappears as the tank pressure increases. Ion energies decrease as the flow rate and pressure increase, but the microwave power level affects the energy only negligibly. The calculated propulsion parameters demonstrate that the efficiency of the laboratory device is low, and that tank pressure greatly changes the performance.
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19th AIAA, Fluid Dynamics, Plasma Dynamics, and Lasers Conference, Jun 8, 1987
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ASCEND 2020, Nov 2, 2020
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AAS/Division for Planetary Sciences Meeting Abstracts #47, Nov 1, 2015
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Bulletin of the American Astronomical Society, Sep 1, 1986
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25th Joint Propulsion Conference, Jul 12, 1989
ABSTRACT
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21st International Electric Propulsion Conference, Jul 18, 1990
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Planetary and Space Science, Feb 1, 2022
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Paper analyzes potential of solar thermal rockets as means of propulsion for planetary spacecraft... more Paper analyzes potential of solar thermal rockets as means of propulsion for planetary spacecraft. Solar thermal rocket uses concentrated Sunlight to heat working fluid expelled through nozzle to produce thrust.
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AAS/Division for Planetary Sciences Meeting Abstracts #26, 1994
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24th Joint Propulsion Conference, Jul 11, 1988
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NASA Tech Briefs, Jul 1, 1992
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A major purpose of the Technical Information Center is to provide the broadest dissemination poss... more A major purpose of the Technical Information Center is to provide the broadest dissemination possible of information contained in DOE'S Research and Development Reports to business, industry, the academic community, and federal, state and local governments. Although portions of this report are not reproducib!e,
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
The Electron Cyclotron Resonance (ECR) thruster is a proposed electrodeless space electric propul... more The Electron Cyclotron Resonance (ECR) thruster is a proposed electrodeless space electric propulsion device with interesting and little understood physics. A laboratory ECR thruster was run in a vacuum tank at pressures in the 10 exp -5 torr range using 2.12 GHz microwave beam and Ar gas propellant. Movable diagnostic probes (a Faraday cup and a gridded energy analyzer) measured plasma characteristics as propellant gas flow rate and input microwave power level were varied. Ion energy and flux data were used to calculate I(sp), propulsive efficiency, and thrust. The ion flux profiles show an unexpected depression on the thruster axis for low tank pressures that disappears as the tank pressure increases. Ion energies decrease as the flow rate and pressure increase, but the microwave power level affects the energy only negligibly. The calculated propulsion parameters demonstrate that the efficiency of the laboratory device is low, and that tank pressure greatly changes the performance.
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19th AIAA, Fluid Dynamics, Plasma Dynamics, and Lasers Conference, Jun 8, 1987
Bookmarks Related papers MentionsView impact
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ASCEND 2020, Nov 2, 2020
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AAS/Division for Planetary Sciences Meeting Abstracts #47, Nov 1, 2015
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Bulletin of the American Astronomical Society, Sep 1, 1986
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25th Joint Propulsion Conference, Jul 12, 1989
ABSTRACT
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21st International Electric Propulsion Conference, Jul 18, 1990
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Planetary and Space Science, Feb 1, 2022
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Paper analyzes potential of solar thermal rockets as means of propulsion for planetary spacecraft... more Paper analyzes potential of solar thermal rockets as means of propulsion for planetary spacecraft. Solar thermal rocket uses concentrated Sunlight to heat working fluid expelled through nozzle to produce thrust.
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AAS/Division for Planetary Sciences Meeting Abstracts #26, 1994
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