Zobrazeno 1 - 10
of 218
pro vyhledávání: '"L. R. Walker"'
Autor:
L. R. Walker
Publikováno v:
Ecosistemas, Vol 14, Iss 1, p 0 (2005)
Externí odkaz:
https://doaj.org/article/9ec121fe1517485ba4c49669626600f4
Publikováno v:
Journal of Propulsion and Power. 38:1051-1081
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::022354cd8486ea8e07bc83413a6d6f56
https://doi.org/10.2514/1.b38594
https://doi.org/10.2514/1.b38594
Publikováno v:
Frontiers in Physics, Vol 6 (2019)
Radio-frequency (RF) ion thrusters are characterized in vacuum test facilities differentiated by pumping speed and thus subject to varying levels of neutral propellant ingestion that affect plasma plume properties and artificially raise the pressure
Externí odkaz:
https://doaj.org/article/532baed5819641148eda703ab6ef2d84
Autor:
Nathan P. Brown, Mitchell L. R. Walker
Publikováno v:
Applied Sciences, Vol 10, Iss 11, p 3775 (2020)
The Hall thruster is a high-efficiency spacecraft propulsion device that utilizes plasma to generate thrust. The most common variant of the Hall thruster is the stationary plasma thruster (SPT). Erosion of the SPT discharge chamber wall by plasma spu
Externí odkaz:
https://doaj.org/article/cb5c8f9b00a541a88859668a205d6119
Publikováno v:
Journal of Electric Propulsion. 1
The operational characteristics of Hall effect thrusters are altered by conductive surfaces in vacuum facilities. Conductive surfaces alter charge distribution in the plume by providing pathways for electron-ion recombination that do not exist in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a000e328bb6e07fa7ccbf41845ead64
https://doi.org/10.1007/s44205-022-00016-9
https://doi.org/10.1007/s44205-022-00016-9
Publikováno v:
Journal of Electric Propulsion. 1
This paper presents a physics-based 0-D steady-state model of a radiofrequency ion thruster (RIT) that is valid for any propellant blend, and hence, any plasma mixture, and the model is used to predict the drag compensation capability and plasma comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd5852b61a0c539ff05820a9083ad232
https://doi.org/10.1007/s44205-022-00013-y
https://doi.org/10.1007/s44205-022-00013-y
Publikováno v:
Journal of Spacecraft and Rockets. 58:222-231
The growing interest in small satellites (smallsats) is primarily a function of their affordability and versatility across a wide range of space mission applications. For these reasons, smallsats h...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce082408b89db8edb83d08962681c7e0
https://doi.org/10.2514/1.a34774
https://doi.org/10.2514/1.a34774
Publikováno v:
Journal of Propulsion and Power. 37:59-67
This Paper investigates the role of microcracks in Hall thruster wall erosion. The formation and growth of microcracks on the surface of M26 grade boron nitride composite due to repeated thermal sh...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c88a8cfd4dece823863d75de129560ef
https://doi.org/10.2514/1.b37948
https://doi.org/10.2514/1.b37948
Publikováno v:
IEEE Transactions on Plasma Science. 48:1060-1075
This article aims to understand the physics of pulsed plasmas by investigating the ionization and recombination of pulsed plasmas on the nanosecond timescale and how operating conditions affect the time-resolved electron temperature and electron dens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e70620951f0c12b55f6cd7273b35c83
https://doi.org/10.1109/tps.2020.2973024
https://doi.org/10.1109/tps.2020.2973024
Publikováno v:
Journal of Propulsion and Power. 36:308-311
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29a5c9f6d969f920cdf561f57aff977a
https://doi.org/10.2514/1.b37512
https://doi.org/10.2514/1.b37512