Results 11 to 20 of about 33,101 (293)
Aerospace, 2023 Pulsed plasma thrusters (PPT) have demonstrated enormous potential since the 1960s. One major shortcoming is their low thrust efficiency, typically
Dillon O’Reilly +6 more
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Blended Filter-Based Detection for Thruster Valve Failure and Control Recovery Evaluation for RLV
Algorithms, 2019 Security enhancement and cost reduction have become crucial goals for second-generation reusable launch vehicles (RLV). The thruster is an important actuator for an RLV, and its control normally requires a valve capable of high-frequency operation, which
Hongqiang Sun, Shuguang Zhang
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Electric Propulsion Methods for Small Satellites: A Review
Aerospace, 2021 Over 2500 active satellites are in orbit as of October 2020, with an increase of ~1000 smallsats in the past two years. Since 2012, over 1700 smallsats have been launched into orbit. It is projected that by 2025, there will be 1000 smallsats launched per
Dillon O’Reilly +2 more
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Bosonization Theory of Excitons in One-dimensional Narrow Gap Semiconductors [PDF]
, 2001 Excitons in one-dimensional narrow gap semiconductors of anti-crossing quantum Hall edge states are investigated using a bosonization method. The excitonic states are studied by mapping the problem into a non-integrable sine-Gordon type model.
Bird +4 more
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Numerical Investigation of the Hydrodynamic Characteristics of 3-Fin Surfboard Configurations
Applied Sciences, 2022 Surfing is a popular sport, with the associated market forecast to reach 2.6 billion US dollars by 2027. In the published literature, there is a range of investigations into the performance of surfboard fins. Some studies model a single fin or review the
Sam Crameri +2 more
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Effect of Anode Dielectric Coating on Hall Thruster Operation [PDF]
, 2003 An interesting phenomenon observed in the near-anode region of a Hall thruster is that the anode fall changes from positive to negative upon removal of the dielectric coating, which is produced on the anode surface during the normal course of Hall ...
Bishaev A. M. +7 more
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A Directional Microplasma Thruster Exhibiting a Switchable Intense Plasma Coupling
IEEE Access, 2020 Conventional cold and warm gas thrusters with low specific impulses and thrust greatly limit the capability of nanosatellites to conduct meaningful plane and attitude changes in space.
Sung-O Kim +2 more
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EPJ Techniques and Instrumentation, 2022 The lifetime of electric propulsion (EP) thrusters depends particularly on the erosion characteristics of operation relevant components, for instance, the grid hole erosion of gridded ion thrusters or the channel wall erosion of Hall effect thrusters ...
Carsten Bundesmann +8 more
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MATHEMATICAL MODELING OF ELECTRIC HEATING ENGINE ON START-UP
Авіаційно-космічна техніка та технологія, 2019 The subject of research in the article is the process of accelerating the working fluid in an electric heating thruster, which is part of the onboard propulsion system used in space tug.
Андрей Владимирович Погудин
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Magnetic nozzle radiofrequency plasma thruster approaching twenty percent thruster efficiency [PDF]
Scientific Reports, 2021 AbstractDevelopment of a magnetic nozzle radiofrequency (rf) plasma thruster has been one of challenging topics in space electric propulsion technologies. The thruster typically consists of an rf plasma source and a magnetic nozzle, where the plasma produced inside the source is transported along the magnetic field and expands in the magnetic nozzle ...
openaire +3 more sources