Results 71 to 80 of about 2,675 (308)
Microthrusters based on the T5 and T6 hollow cathodes
, 2011 Small spacecraft with limited on-board resources would benefit greatly from the development of a low power, low cost microthruster able to offer propellant savings over conventional alternatives and enable higher energy missions.
Grubisic, Angelo Niko, Grubisic, Angelo
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The Impact of Planar-Geometry Cathodes on Hall Thruster Performance
, 2023 Thesis (Master's)--University of Washington, 2023This thesis explores the viability of planar cathodes for improving Hall thruster performance. A mathematical model is presented that calculates how the total efficiency of a Hall thruster changes when ...
Taylor, Jonah
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Predicting Performance of Hall Effect Ion Source Using Machine Learning
Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.This study introduces HallNN, a machine learning tool for predicting Hall effect ion source performance using a neural network ensemble trained on data generated from numerical simulations. HallNN provides faster and more accurate predictions than numerical methods and traditional scaling laws, making it valuable for designing and optimizing Hall ...
Jaehong Park +8 more
wiley +1 more source
, 2004 A pulsed Hall thruster system includes a Hall thruster having an electron source, a magnetic circuit, and a discharge chamber; a power processing unit for firing the Hall thruster to generate a discharge; a propellant storage and delivery system for ...
Gamero-Castano, Manuel +2 more
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Australian Journal of Social Issues, EarlyView.ABSTRACT Robust measurement of disadvantage is essential to identifying and addressing inequities in children's development. We tested how a multidimensional framework of child disadvantage performed relative to a traditional socioeconomic position (SEP) approach to predict developmental outcomes.
Wei Hong +7 more
wiley +1 more source
AerospaceA collaborative inter-laboratory study was conducted to characterise the performance of the novel 250 W External Discharge Plasma Thruster (XPT) with a channel-less Hall effect-type thruster designed to address lifetime limitations and lower-power ...
Thomas F. Munro-O’Brien +3 more
doaj +1 more source
Thermal stability of the krypton Hall effect thruster
Nukleonika, 2017 The Krypton Large IMpulse Thruster (KLIMT) ESA/PECS project, which has been implemented in the Institute of Plasma Physics and Laser Microfusion (IPPLM) and now is approaching its final phase, was aimed at incremental development of a ~500 W class Hall ...
Szelecka Agnieszka +2 more
doaj +1 more source
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
doaj +1 more source
NASA's Hall Thruster Program 2002
, 2002 The NASA Hall thruster program currently supports a number of tasks related to high power thruster development for a number of customers including the Energetics Program (formerly called the Space-based Program), the Space Solar Power Program, and the In-
Jacobson, David T. +5 more
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The Anatomical Record, EarlyView.A new musculoskeletal reconstruction and revision of the cranio‐mandibular anatomy of the Devonian arthrodire placoderm Dunkleosteus terrelli from a comparative and functional anatomical perspective. Dunkleosteus is a specialized arthrodire with many specializations for feeding on large vertebrates, and many of its features are part of broader ...
Russell K. Engelman +4 more
wiley +1 more source