Results 51 to 60 of about 6,632 (182)
Boundary-induced effect on the spoke-like activity in ExB plasma
, 2019 The spoke instability in an $E\times B$ Penning discharge is shown to be strongly affected by the boundary that is perpendicular to $B$ field lines. The instability is the strongest when bounded by dielectric walls.
Kaganovich, Igor +5 more
core +1 more source
Review of non-conventional Hall effect thrusters
Journal of Electric PropulsionAbstractElectric propulsion has become the favored approach for Low Earth Orbit (LEO) maneuvers, resulting in substantial expansion in its use in the satellite industry. The Hall effect thruster’s (HETs) high specific impulse and thrust-to-power ratio allow for a wide range of in-space propulsion applications, making it a viable alternative for various
Chhavi Chhavi, Mitchell L. R. Walker
openaire +1 more source
Mode Transitions in Magnetically Shielded Hall Effect Thrusters [PDF]
50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, 2014 A mode transition study is conducted in magnetically shielded thrusters where the magnetic field magnitude is varied to induce mode transitions. Three different oscillatory modes are identified with the 20-kW NASA-300MS-2 and the 6-kW H6MS: Mode 1) global mode similar to unshielded thrusters at low magnetic fields, Mode 2) cathode oscillations at ...
Michael J. Sekerak +7 more
openaire +1 more source
Trends in Flight-Operated Small-Satellite Propulsion Technologies
Applied SciencesThe development and execution of prospective inner and outer space missions require focusing on the use of many small space vehicles operating in swarms with multiple informational, navigational, and mission-oriented interactions among themselves.
Andrei Shumeiko +3 more
doaj +1 more source
Design and Testing of a Hall Effect Thruster with 3D Printed Channel and Propellant Distributor [PDF]
The UAH-78AM is a low-power Hall effect thruster developed at the University of Alabama in Huntsville with channel walls and a propellant distributor manufactured using 3D printing.
Hopping, Ethan P., Xu, Kunning G.
core +1 more source
Numerical optimization of Hall effect thruster with variation in magnetic field
FirePhysChemIn the present study, numerical analyses were conducted to enhance the strength of the magnetic field. While electromagnetic coils and permanent magnets have conventionally been used for this purpose, the study explores the utilization of superconducting
Harshit Shukla +2 more
doaj +1 more source
Hall Thruster Thermal Modeling and Test Data Correlation [PDF]
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
The Impact of Harness Impedance on Hall Thruster Discharge Oscillations [PDF]
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
Hall-Effect Thruster Utilizing Bismuth as Propellant [PDF]
A laboratory-model Hall-effect spacecraft thruster was developed that utilizes bismuth as the propellant. Xenon was used in most prior Hall-effect thrusters.
Gasdaska, Charles +3 more
core +1 more source
Experimental Investigations of a Krypton Stationary Plasma Thruster
International Journal of Aerospace Engineering, 2013 Stationary plasma thrusters are attractive electric propulsion systems for spacecrafts. The usual propellant is xenon. Among the other suggested propellants, krypton could be one of the best candidates.
A. I. Bugrova +5 more
doaj +1 more source