Results 31 to 40 of about 2,580 (293)
https://www.scielo.br/j/jatm/a/pNSFHNG7yrr56hnwXq3DDPD/?format=pdf&lang=en [PDF]
Journal of Aerospace Technology and Management, 2022 An approach to quantify the lifetime and reliability of dual-mode ion thruster is presented based on coupling analyses of thruster failure modes, throttle levels, life models, input uncertainties, and throttle profiles.
Xueer Zhang, Tianping Zhang, Detian Li
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High Fidelity Multi-Objective Design Optimization of a Downscaled Cusped Field Thruster
Aerospace, 2017 The Cusped Field Thruster (CFT) concept has demonstrated significantly improved performance over the Hall Effect Thruster and the Gridded Ion Thruster; however, little is understood about the complexities of the interactions and interdependencies of the ...
Thomas Fahey +2 more
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AIP Advances, 2021 To address the problem of low flux density generated by superconducting magnets and the onerous cooling system in existing superconducting magneto-hydrodynamic (MHD) thrusters, which leads to overall low thrust efficiency of MHD thrusters, a capacitive ...
Qiangqiang Cao +3 more
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Simplified Power Supplies for Ion Thrusters [PDF]
Journal of Spacecraft and Rockets, 1981 A program addressing less complex and potentially lower cost ion thruster systems has been started at the NASA Lewis Research Center. This paper discusses the initial development and demonstration of power supplies with an order of magnitude reduction in parts count, leading to increased reliability at lower weight, while still maintaining thrust ...
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Spatial evolution characteristics of ion and electron flow for 300 W class low-power Hall thruster
AIP Advances, 2021 The Faraday probe and cylindrical Langmuir probe were used to characterize the downstream ion and electron spatial evolution of a 300 W class low-power Hall thruster.
Xinwei Chen +10 more
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Optimal Interplanetary Transfer of Solar Wind Ion Focusing Thruster-Based Spacecraft
Applied Sciences, 2023 The Solar Wind Ion Focusing Thruster (SWIFT) is a highly-innovative propellantless propulsion concept, recently proposed by Gemmer and Mazzoleni. In its nominal configuration, a SWIFT consists of a conically-shaped mesh of positively-charged conducting ...
Alessandro A. Quarta +3 more
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Hall thruster ion beam characterization [PDF]
31st Joint Propulsion Conference and Exhibit, 1995 The distribution of ion current density as a function of angle from the thruster axis was measured at nominal operating conditions of 300 Volts discharge voltage and 4.5 Amperes discharge current for two SPT-100 stationary plasma thrusters from Fakel Enterprises, a D-55 anode layer thruster from the Central Scientific Research Institute for Machine ...
David Manzella, John Sankovic
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Electrostatic ion thruster optics calculations [PDF]
28th Joint Propulsion Conference and Exhibit, 1992 Calculations have been performed which encompass both a self-consistent ion source extraction plasma sheath and the primary ion optics including sheath and electrode-induced aberrations. Particular attention is given to the effects of beam space charge, accelerator geometry, and properties of the downstream plasma sheath on the position of the ...
Whealton, J. H +2 more
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Simplified Optimization of the Magnetic Configuration of HEMP-Thrusters
Applied Sciences, 2023 One type of ion thruster that has gained attention in recent years is the High Efficiency Multistage Plasma (HEMP) thruster. Optimizing the performance of these thrusters can be challenging due to the complexity of the underlying physics.
Lars Lewerentz, Ralf Schneider
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Advanced Functional Materials, EarlyView.This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous
Mingfeng Xu +5 more
wiley +1 more source