Results 91 to 100 of about 12,411 (357)

High Power Demonstration of a 100 kW Nested Hall Thruster System [PDF]

open access: yes
The XR-100 team successfully completed high power system testing of a Nested Hall Thruster system made up of the X3 Nested Hall Thruster, a modular Power Processing Unit, and a 5 valve Mass Flow Controller as the culmination of work performed under a ...
Goebel, Dan M.   +4 more
core   +1 more source

Design, Control, and Clinical Applications of Magnetic Actuation Systems: Challenges and Opportunities

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This review aims to provide a broad understanding for interdisciplinary researchers in engineering and clinical applications. It addresses the development and control of magnetic actuation systems (MASs) in clinical surgeries and their revolutionary effects in multiple clinical applications.
Yingxin Huo   +3 more
wiley   +1 more source

The Impact of Harness Impedance on Hall Thruster Discharge Oscillations [PDF]

open access: yes
Hall thrusters exhibit characteristic discharge voltage and current oscillations during steady-state operation. The lower frequency breathing-mode current oscillations are inherent to each thruster and could impact thruster operation and power processing
Pinero, Luis R.
core   +2 more sources

Predicting Performance of Hall Effect Ion Source Using Machine Learning

open access: yesAdvanced 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

Hall Effect Thruster Direct Drive PPUs, Experimental Investigation of the Cathode Potential Grounding Problem

open access: yesE3S Web of Conferences, 2017
In order to maximize system mass and cost savings, a Hall Effect Thruster Direct Drive Approach shall ideally get away with the need to provide galvanic isolation for the Anode voltage.
Ghislanzoni Luca   +4 more
doaj   +1 more source

Hall Thruster Thermal Modeling and Test Data Correlation [PDF]

open access: yes
The life of Hall Effect thrusters are primarily limited by plasma erosion and thermal related failures. NASA Glenn Research Center (GRC) in cooperation with the Jet Propulsion Laboratory (JPL) have recently completed development of a Hall thruster with ...
Clayman, Lauren   +3 more
core   +1 more source

Specialized turbomolecular pumping stage for RF ion thrusters [PDF]

open access: yes, 2011
This paper proposes the application of a highly specialized Turbomolecular Vacuum Pump (TMP) device as a subsystem for electrostatic RF ion thrusters, using D. Fearn’s Dual-Stage 4-Grid design as a cutting-edge example. The TMP turbine’s rotor impulse is
Leonov, Max
core  

Microrobotic Catheterization of the Ophthalmic Artery for Targeted Treatment of Retinoblastoma

open access: yesAdvanced Intelligent Systems, EarlyView.
A microrobotic platform is presented that allows teleoperated and autonomous navigation of flow‐driven magnetic microcatheters, MagFlow, into the ophthalmic artery for superselective intra‐arterial infusion of chemotherapy to treat retinoblastoma. Extensive benchtop validations with patient‐derived biomimetic phantoms under optical and fluoroscopic ...
Artur Banach   +5 more
wiley   +1 more source

An Analysis of the Effect of Hall Thruster Plumes on Surface Charging of a Complex Spacecraft Structure

open access: yesApplied Sciences
This article aims to conduct an in-depth investigation into the environmental impact of Hall thruster plumes on spacecraft surface charging. The non-uniform plasma plume generated by Hall thrusters may trigger charging and discharging effects, making the
Xin Zhang   +11 more
doaj   +1 more source

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