Results 61 to 70 of about 9,251 (208)

Use of emission spectroscopy for real-time assessment of relative wall erosion rate of BHT-200 hall thruster for various regimes of operation [PDF]

, 2010
Radiation emission due to Boron atoms sputtered from the Boron-Nitride ceramic walls of a BHT-200 Hall thruster was measured as a diagnostic for real time assessment of thruster wall erosion and to determine the e ects of various operation conditions on
Cheng, Elovikov, Garnier, Gorshkov, Gryzinski, Koizumi, Manuel Martinez-Sanchez, Martinez-Sanchez, Murat Celik, Oleg Batishchev, Rubin, Yu   +11 more
core   +1 more source

Study on inversion method of wall erosion information of on-orbit Hall thruster based on low-frequency oscillation signals and neural networks. [PDF]

Heliyon, 2022
Han K, Xie F, Wang Y, Zhang L, Yu M, Wang J, Wang Y, Wan J.   +7 more
europepmc   +1 more source

Low Cost Electric Propulsion Thruster for Deep Space Robotic Science Missions [PDF]

Electric Propulsion (EP) has found widespread acceptance by commercial satellite providers for on-orbit station keeping due to the total life cycle cost advantages these systems offer.
Manzella, David
core   +1 more source

Growth of Rayleigh instability in a Hall thruster channel having dust in exit region

AIP Advances, 2019
In a Hall thruster, the axial movement of ions towards the exit of the chamber and the divergence of ion beam sputter the wall and thus the maximum erosion of wall of the exit region takes place.
Hitendra K. Malik, Jasvendra Tyagi, Dimple Sharma   +2 more
doaj   +1 more source

Research on Thrust Noise Characteristic of 1.35kW Hall Thruster [PDF]

EPJ Web of Conferences
The rapid advancement of contemporary global satellite communication and navigation has led to a growing significance for accurate orbit prediction and real-time orbit control capabilities.
Keyuan Huang, Wei Mao, Yanming Wei, Xiufeng Zhong, Qi Liu, Nan Wu, Yanlin Hu   +6 more
doaj   +1 more source

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, Powis, Andrew, Raitses, Yevgeny, Rodriguez, Eduardo, Skoutnev, Valentin, Smolyakov, Andrei   +5 more
core   +1 more source

Real-Tme Boron Nitride Erosion Measurements of the HiVHAc Thruster via Cavity Ring-Down Spectroscopy [PDF]

Cavity ring-down spectroscopy was used to make real-time erosion measurements from the NASA High Voltage Hall Accelerator thruster. The optical sensor uses 250 nm light to measure absorption of atomic boron in the plume of an operating Hall thruster ...
Gallimore, Alec, Huang, Wensheng, Kamhawi, Hani, Lee, Brian C., Yalin, Azer P.   +4 more
core   +1 more source

Study of the thrust response characteristics of Hall Micro Thruster

Results in Physics
An advanced Watt class Hall Micro Thruster (HMT) is offered for Space Gravitational Wave Detection (SGWD), and an investigation has been conducted on its start-up, shutdown, rise, and fall response times.
Liexiao Dong, Shixu Lu, Ning Guo, Shengtao Liang, Jianfei Long, Wei Luo, Luxiang Xu   +6 more
doaj   +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

Specialized turbomolecular pumping stage for RF ion thrusters [PDF]

, 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