Results 91 to 100 of about 2,675 (308)

Magnesium Hall Thruster

, 2015
This Phase II project is developing a magnesium (Mg) Hall effect thruster system that would open the door for in situ resource utilization (ISRU)-based solar system exploration. Magnesium is light and easy to ionize.
Szabo, James J.
core  

‘It's all very well having a diverse curriculum, but if there is no curriculum, it can be as diverse as you like’: Precarity and decolonising in the neoliberal UK higher education system

British Educational Research Journal, EarlyView.
Abstract Drawing upon interview research across two academic departments as part of the early stages of a ‘decolonise the curriculum’ initiative at a Southern UK university, this study highlights a growing gulf between policy and practice in efforts to address systemic racial inequalities in UK universities. A reliance upon precarious labour, a culture
Triona Fitton, Barbara Adewumi, Laura R. Bailey, Jacob W. Moore, Lauren‐Marie Aba Amoah   +4 more
wiley   +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

Thermal Characterization of a Hall Effect Thruster

, 2008
The thermal characteristics of a Hall thruster directly influence thruster and spacecraft design. High temperatures affect the magnetic coil capabilities and cause higher insulator erosion rates, influencing both thruster performance and lifetime.
Bohnert, Alex M.
core  

Measurements of Plasma Potential Distribution in Segmented Electrode Hall Thruster [PDF]

, 2001
Use of a segmented electrode placed at the Hall thruster exit can substantially reduce the voltage potential drop in the fringing magnetic field outside the thruster channel.
Fisch, N. J., Raitses, Y., Staack, D.
core  

Investigations of Probe Induced Perturbations in a Hall Thruster [PDF]

, 2002
An electrostatic probe used to measure spatial plasma parameters in a Hall thruster generates perturbations of the plasma. These perturbations are examined by varying the probe material, penetration distance, residence time, and the nominal thruster ...
Nathaniel Fisch, Fisch, N. J., David Staack, Yevgeny Raitses, Raitses, Y., Staack, D.   +5 more
core   +1 more source

The impact of the current student loans regime on Muslim student engagement and retention in English higher education

British Educational Research Journal, EarlyView.
Abstract There is much interest in the potential for an alternative funding system for higher education students in England to support the spiritual and worldly needs of British Muslim students. At the heart of this issue lies a tension over whether the student financing system in English HE is haram, or forbidden under Islamic (Shari'ah) law, because ...
Richard Hall, Yusraa Maryam, Sumeya Loonat   +2 more
wiley   +1 more source

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

E3S 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, Benetti Luca, Misuri Tommaso, Cesaretti Giovanni, Fontani Lorenzo   +4 more
doaj   +1 more source

Design and operations of Hall thruster with segmented electrodes [PDF]

, 1999
Principles of the Hall thruster with segmented electrodes are explored. A suitable vacuum facility was put into service. For purposes of comparison between segmented and conventional thruster approaches, a modular laboratory prototype thruster was ...
A. Litvak, Y. Raitses, L. Dorf, Dorf, L. A., Litvak, A. A., N. Fisch, Fisch, N. J., Raitses, Y.   +7 more
core   +1 more source

Lessons from primary school students' perceptions of the factors that influence school connectedness

British Educational Research Journal, EarlyView.
Abstract School connectedness is critical to improving students' health, development and wellbeing. Research into primary school students' perceptions of the factors that influence their sense of connectedness is essential for identifying practices that promote success.
Jordana F. Hoenig, Therese M. Cumming
wiley   +1 more source