Results 21 to 30 of about 63,437 (256)
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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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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Optimized Use of Thrusters During Transit with a Passenger Ferry [PDF]
TransNav, 2020 This paper aims to address the impact that optimized use of propulsion equipment would have on a ferry during transit. Assuming that the ship arrives at it’s destination on schedule, a potential reduction in fuel consumption would cut the overall cost of
Erik Kløvning
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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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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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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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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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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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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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, 2021 Hollow cathode discharges are widely used as neutralizers for the electric propulsion systems and recently developed into micro-thrusters for the small satellites.
Z. Ning +5 more
semanticscholar +1 more source