Results 31 to 40 of about 8,678 (302)

Optimization of Cylindrical Hall Thrusters [PDF]

open access: yes43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2007
The cylindrical Hall thruster features high ionization efficiency, quiet operation, and ion acceleration in a large volume-to-surface ratio channel with performance comparable with the state-of-the-art annular Hall thrusters. These characteristics were demonstrated in low and medium power ranges.
Yevgeny Raitses   +3 more
openaire   +1 more source

Electron-wall interaction in Hall thrusters [PDF]

open access: yes, 2005
Electron-wall interaction effects in Hall thrusters are studied through measurements of the plasma response to variations of the thruster channel width and the discharge voltage.
Fisch, Nathaniel J.   +3 more
core   +1 more source

Direction for the Future - Successive Acceleration of Positive and Negative Ions Applied to Space Propulsion

open access: yes, 2013
Electrical space thrusters show important advantages for applications in outer space compared to chemical thrusters, as they allow a longer mission lifetime with lower weight and propellant consumption.
Aanesland, A.   +3 more
core   +2 more sources

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

open access: yesAdvanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Robust Model Predictive Control for Satellite Orbit Maintenance Using Hall Effect Thrusters [PDF]

open access: yesفناوری در مهندسی هوافضا
In this article, a robust model predictive controller is designed for maintaining the satellite's low earth orbit in the presence of perturbations and uncertainties.
Masumeh kiantaj   +2 more
doaj   +1 more source

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

open access: yesAdvanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit   +5 more
wiley   +1 more source

Progress in Experimental Study of Plume Plasma Discharge Characteristics of the Hollow Cathode

open access: yes气体物理
With the continuous maturation and sustained application of electric propulsion technology, electric propulsion is becoming the preferred choice of space propulsion for deep space exploration missions with its high specific impulse advantage. Among them,
Jintao JIA, Long MIAO, Yugan LIAO
doaj   +1 more source

Radial distribution of electrons rotation moment in hall effect and plasma-ion thrusters

open access: yesАвіаційно-космічна техніка та технологія, 2021
The subject matter of the article is the radial distribution of electrons movement parameters inside electric propulsion thrusters with closed electrons drift.
Zongshuai Guo
doaj   +1 more source

Investigation of Halogen Substitution Effects in π‐Conjugated Organic Ligands of Chiral Hybrid Perovskites on Their Chiroptical Activity

open access: yesAdvanced Functional Materials, EarlyView.
The role of novel thiophene‐based ligands with halogen substitutions in enhancing the chiroptical and optoelectronic properties of 2D chiral HOIPs has been investigated. By tailoring ligand design, enhanced CD and CPL properties are achieved, with improved CPL discrimination in photodetectors.
Boesung Kwon   +4 more
wiley   +1 more source

A novel method for measuring the width and angle of corrosion in Hall thrusters using three-dimensional point cloud

open access: yesMeasurement + Control
Hall thrusters are electric propulsion devices that are widely used in modern spaceflight. To obtain the critical corrosion data effectively and accurately during long-life tests of Hall thrusters, this paper proposes an automated corrosion measurement ...
Zhi-Feng Zhou   +2 more
doaj   +1 more source

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