Results 11 to 20 of about 63,437 (256)
Reduced-order particle-in-cell simulations of a high-power magnetically shielded Hall thruster [PDF]
Plasma Sources Science & Technology, 2023 High-power magnetically shielded Hall thrusters have emerged in recent years to meet the needs of the next-generation on-orbit servicing and exploration missions.
M. Reza +5 more
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Scientific Reports, 2022 Innovations for terrestrial transportation technologies, e.g., cars, aircraft, and so on, have driven historical industries so far, and a similar breakthrough is now occurring in space owing to the successful development of electric propulsion devices ...
Kazunori Takahashi
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Machines, 2022 Autonomous underwater vehicle (AUV) is one of the most important exploration tools in the ocean underwater environment, whose movement is realized by the underwater thrusters, however, the thruster fault happens frequently in engineering practice.
Qunhong Tian, Tao Wang, Bing Liu, G. Ran
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Magnetic nozzle radiofrequency plasma thruster approaching twenty percent thruster efficiency
Scientific Reports, 2021 Development 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 ...
Kazunori Takahashi
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IEEE Transactions on Instrumentation and Measurement, 2021 Vessels today are being fully monitored, thanks to the advance of sensor technology. The availability of data brings ship intelligence into great attention.
Peihua Han +4 more
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Multi-Sensor Fault Diagnosis of Underwater Thruster Propeller Based on Deep Learning
Italian National Conference on Sensors, 2021 With the rapid development of unmanned surfaces and underwater vehicles, fault diagnoses for underwater thrusters are important to prevent sudden damage, which can cause huge losses. The propeller causes the most common type of thruster damage.
C. Tsai +4 more
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Performance comparison of a 9-kW magnetically shielded Hall thruster operating on xenon and krypton
Journal of Applied Physics, 2021 The performance of a 9-kW class magnetically shielded Hall thruster operating on xenon and krypton propellants is experimentally char-acterized. Thrust and efficiency measurements performed at discharge powers ranging from 4.5 to 9 kW indicate that the ...
L. Su, B. Jorns
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Adaptive control of ROVs with actuator dynamics and saturation [PDF]
Modeling, Identification and Control, 1992 A direct model reference adaptive controller (MRAC) is derived for an underwater vehicle with significant thruster dynamics and limited thruster power. The reference model decomposition (RMD) technique is used to compensate for the thruster dynamics.
Ola-Erik Fjellstad +2 more
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Inductive Coupling Discharge Characteristics of a 10-cm Dual-Stage 4-Grid Radiofrequency Ion Thruster [PDF]
Journal of Aerospace Technology and Management, 2021 In this study, the numerical simulations are used to simulate the discharge process of a 10-cm dual-stage 4-grid (DS4G) radiofrequency (RF) ion thruster, and the effects of RF coil turns, and electrical parameters on the key plasma parameters inside the ...
Yanxu Pu +7 more
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A multiple thruster array for 30-cm thrusters [PDF]
11th Electric Propulsion Conference, 1975 The 3.0-m diameter chamber of the 7.6-m diameter by 21.4-m long vacuum tank at NASA LeRC was modified to permit testing of an array of up to six 30-cm thrusters with a variety of laboratory and thermal vacuum bread-board power systems. A primary objective of the Multiple Thruster Array (MTA) program is to assess the impact of multiple thruster ...
V. RAWLIN, M. MANTENIEKS
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